Hello! TH-cam seems to be showing this video to a lot of new people - and if you're one of them, welcome! 🥳 If you enjoyed this field trip with Dr. Cannon, good news: There's another one coming along in January! It features a magma almost-island, a tour of ancient, bizarre-looking rocks, and us standing on the Earth's surface as it was more than a billion years ago. You can click here to subscribe if you'd like an update when it launches: th-cam.com/users/alexisdahl Thanks for being here! 👋
Indeed, TH-cam sent you to me today! Great video, love the channel and your approach. I really like Geology, and telling the "stories" behind the geology is a talent you have that is quite challenging, so kudos to you. I look forward to watching your past videos and have subscribed so I can see your future videos. Thank you for doing this, I (and others) appreciate it! 🙂
How about a video on the pudding stone and the ultraviolet light glowing rocks..or the Michigan silver wall legend and ancient copper mining...great videos
Just got this recommended today- and was so interesting that it lead me down your rabbit hole learning about my state. Super interesting, so I'll have to take some time to go through all of your videos. This will make vacation a lot more interesting.
I'm a retired 71-year-old geologist. This fellow is a classic geologist and I love his near final statement about being ready to accept new ideas. This winter, for the 2nd time, I have the privilege of taking nearly twenty geology students to the deserts of the SW to help them better understand geology. At the very least, as one of the other retired geologists said last year to the students, "you have to be able to keep reinventing yourself." That phrase says what being a geology is all about. The science is so young that inevitably our ideas change, and one must change their mind frequently to keep up. It is a great, great science.
Surely geologists never retire - maybe turn into fossils, but you don't retire! Wish other fields looking back into our ancient past were as ready to accept new ideas & possibilities. Michigan really has so much going for it. Thanks for spreading your knowledge and the desert is wonderful...
And yet Creation science is openly mocked by you, Creation Scientists are banned from entering research areas in the Grand Canyon and institutions are threatened by creationist geologic theories.
I’m a retired geologist and earth science educator. I took oceanography from Bob Dietz during my undergraduate days. He came to us as a visiting professor from Scripps and was near the end of his career. Still, he had great stories of his work the early plate tectonics pioneers as well as his impact studies. Many years later I visited the K-Pg boundary deposits at Raton Pass on the CO-NM border. If you’re up for a field trip, you should visit it yourself. My takeaway is that I'm reminded again what I used to tell students and museum visitors when I was a exhibit interpreter is that every once in a while the Earth has a very bad day.
Ms. Dahl, I'm a retired geologist. I received an M.S. in '75 from a university in Indiana and cannot believe how much the understanding of the science has changed in that fifty years. I'm currently the head of my graduate alma mater's geology alumni and we're putting trips together to inspire geology students. I'd love to have you meet students over our fall break in 2024 at Marquette to discuss the Sudbury Impact. You''re doing great work! I would enjoy corresponding with you to know some good outcrops up that way.
I’m a 73 year old, living 100 miles west of Sudbury. My only regret is not becoming a geologist. This field was never presented to girls my age. My retirement is enhanced by everything I can now learn on a daily basis. Videos like this are fascinating. Thank you so much.
I was a Blaster on a highway job on what was thought to be the outer rim of the crater of this impact by Webbwood on Hwy 17 in Ontario. The granite had waves in it that looked like it had been melted plastic. Very cool video! Thanks for doing it.
I did my doctoral work on this ejecta deposit. Really fascinating, and it was wonderful getting to work with Bill Cannon. I am so glad to see such an accessible and well made video about it!
I'd like to read the thesis. I'm over in Wisconsin on the edge of the Michigan limestone "Bowl" . Also lived in Wilmington NC. Near the many Carolina "Bogs" such as Lake Waccamaw. The thery is that mysterious holes or pits called bogs were created by fallen chunks of ICE . Since there is no othere ejecta to be found in the bog(s). A body of water created by this Sudbury Ejecta from 900 miles away
My wife and I are both geologists and she got her bachelor’s at a Michigan College and is familiar with the UP. We used to vacation near Sudbury, but decided to go to the UP in 2018. We had a fabulous trip. The Sudbury Breccia, of course, but also the Porcupine Mountains, an ancient volcano complex, and the copper mines of the district. Don’t miss the mineral museum at Houghton, but they request you allow two days.
That “roadside park” you guys were at is about 3 miles from my house. When I worked for the township here, I used to mow the lawn and empty the garbage bins there. Great video.
Its thanks to videos like this that helped me solve a 30 + year old curiousty related to the sudbury impact. Living on a farm 200 miles south of Sudbury about 40 miles west of Toronto, I happened upon this weird rock in the field. Knowing it was out of place from the local geology I brought back to the house with the aid of a front end loader. It was heavy and about the size of a microwave, it was mostly grey with smaller darker rocks embeded in it. My father right away said it was just a old chunk of concrete, I always questioned that as why would it be so far from any structure or possible dumping site, and why would anybody mix in such small rocks ...basically more concrete than rock not very financially smart I thought. The rock was placed in front of one of the farm builldings where I presume it sits to this day, slowing getting buried again. It wasn't till about 3 years after we had sold the place did I find out what it was, after watching a youtube video on another meteriote impact. It was piece of melted rock ejected from the impact in sudbury called seuvite.
NO, that is not what that rock was. The rock you are talking about was most likely brought there by a glacier some 20,000 years ago, or by a river that was once in that area. Now, I dont know what the rock looks like, but if it looks like concrete, it is a sedimentary rock, which is very common in that region of Ontario.
SW US desert Geologist here. My hat is always off to my colleagues up north and east who pick through trees, brush, dirt, and moss to see the rocks beneath. Good post. I love how enthusiastic undergrads are!
Loved hearing him say be open to new ideas. We are given the impression that geologists and archaeologists don’t like people challenging the information they built their career on, so ideas move forward reluctantly. I hope the young people watching this question everything and always be ready to be wrong. It is an amazing g trait to be able to hit reset based on new data.
What nice man. I like how he said it was a pleasure to pass along information in ways other than highly technical papers that hardly anyone was ever going to see.
I grew up in eastern Washington state and North Idaho. My father was a forester for a railroad company and geology was a side interest of his. One of the great mysteries of the region was how the Scablands of Eastern Washington were formed. The area covers nearly a quarter of the state. A geologist came up with the radical theory of Lake Missoula and huge ice dams breaking, releasing millions upon millions of gallons of water across what now is North Idaho and Eastern Washington. For decades other geologists thought he was crazy, but step by step, discovery after discovery proved him to be correct. The Scablands are strange and beautiful in their own particular way. The story of the geology of your region and how it was changed by the Sudbury Impact and the theories behind it remind me of Great Lake Missoula, the ice dams and the formation of the Scablands. Thank you again for a well told bit of Upper Michigan history, and in this case, geology.
I saw a wonderful film about the formation of the Scablands. It included imagery of the various formations and a stunning animation of what happened to create them. I learned that water 'tornadoes' , bearing various sized sand and stones, literally drilled cylindrical indentations into bedrock in some places. Amazing! Geology can be ... thrilling.
@@ZebaKnight Absolutely! There are some bizarre landscapes out there. The area west of Spokane WA to the Columbia River is very interesting. Going north or south of I90 can lead you to some very interesting areas such as the terrain near Soap Lake or Palouse Falls, below which is like a miniature Grand Canyon. Camping out in the Scab Lands can feel odd with the strange rock formations, especially on crystal clear nights. Then there are Steptoe and Kamiah Buttes, along with the Snake River Canyon, Hells Canyon, the lava beds in southeastern Idaho know as The Craters Of the Moon . . . and of course Yellowstone NS. I could go on and on. It is quite fascinating.
I used to live inside the crater lol the Sudbury Basin. You can actually see the crater from edge to edge in certain places, but it’s hard to imagine it’s actually an impact crater unless you were told, it just looks like a very large valley.
The origin of the Sudbury ore body as a meteorite was well known in the 1970’s. My father was a mining engineer and very focused on geology and he noted that to me when I got a summer job working underground in Sudbury as a student in the early 1970’s. Most of the time I worked at the 2,400 foot level. Hard granite interspersed with crumbly, flaky rock. The combination made for dangerous unstable work areas when scaling, roof bolting etc.
I spent my childhood working and vacationing at my grandfathers cabin about 30 minutes from Sudbury and was always entranced by the scale of the mining and local geological interest in the area. I’m very glad to have found this video.
I loved your video and after viewing it, I thought I would have loved being a geologist or an anthropologist, instead I became a military intelligence analyst and afterwards a marketing analyst. I thrived on figuring out the back story and why things/events happen or happened the way they did. I guess I've always been very curious. Now at almost 82, I photograph birds and butterflies and marvel at the way they are and how they came to be. I like finding the answers. Kind of similar to how geologists live to find and know why the things they discover happened and then tie the pieces together for better understanding and explanations of the world around them. Thanks again.
Maybe I am biased, but as a Michigander, this is good content. I love finding interesting little things to do around the state during the summer camping season. I think this would make a lovely stop along the way, Thanks!
I live in traverse city but I try to go to New parts of Michigan every summer, but no matter what time of year I love learning new things about my state! I'm very happy the algorithm brought this before me
@@0GieLongshank my Step Father is a park Ranger at Sleeping bear dunes and super Rock obsessed. I can't wait to share this video with him! he lives with my mom in Traverse City. LOL maybe you've seen her dressed as Mother Nature at Environmental Rallies....
IANAG - I am not a geologist, lol. But I learned a bit watching this. Thank you for making this video. It was fascinating, as I didn't know about this event. Your energy and enthusiasm is contagious. Bill is so knowledgeable, not just about the event and how it changed rocks, but the history of discovery. Well done! Again, thank you.
Alexis your energy and excitement is contagious. Your interview with Dr. Cannon was fantastic. The Wonderful world of TH-cam has become better because of you recording Dr. Cannon's experience and wise advice at the end of keeping an open mind.
I've lived in Sudbury for 52 years now, I knew rocks were tossed from the impact as far as Michigan but this is the first time I got to see one (outside that building). We have lots of rock and mining here and is a great place to live. 330 lakes in our city! Thanks for the video and sharing!
As a kid we went on a family road trip all the way around Lake Superior. My mom encouraged me to collect rocks at stops along the way. At the end of the trip we stayed with my great uncle Ralph Marsden in Duluth, he was head of the geology dept at UM-D. I showed him my rocks and he told me what they were and knew where I found each one. I later learned he was an expert on Iron formations. He was also a government geologist fresh out of college who had the misfortune to be working in the Philippines when it was invaded in WW2. He was a prisoner for the duration of the war and barely survived.
This is so crazy to find this video! This summer we learned of the Giant crater while visiting Sudbury and the aforementioned big nickel. In October we were visiting Jasper Knob and the banded iron formation in the Marquette area! We also love the geology of the Thunder Bay area and are from Minnesota. This video brings so many things together!
I visited Sudbury in the 1960s and I remember that as we traveled east toward Toronto for many miles we saw nary a stick of wood, bare rock. This was caused mainly by the emissions of sulfur dioxide by smelting operations leading to severe acidification but remember that since nickel is rare on the surface of the Earth many plants and animals are rather intolerant of it, e.g nickel allergy. My recollection is that even way back then Sudbury was widely thought to be an impact basin. Enjoyed your video very much. Thank you for tackling this subject that has always been of interest to me. By the way my wife is from Sault Ste. Marie and I grew up in Marinette WI.
The acidification was primarily caused by industrial operations in the US surrounding the Great Lakes, which led to the 'death' of hundreds of lakes in Northern Ontario, which led in turn to difficult negotiations between Canada and the US. An agreement was reached and things have improved immeasurably since.
I live in Sudbury currently, and seeing old pictures here always shocks me. Even since I was little, Sudbury has gotten so much greener and hearing stories of when my grandma was little how they just didn't go outside some days, because of how the air pollution was so bad always surprised me when I was little
Being a lifelong citizen of sudbury the geology and landscape of this area is so amazing, you can see the crater where it’s mostly flat farmland and grazing land and surrounding the area is loads of igneous rock cliffs and mounds known as the sudbury igneous complex. Unfortunately due to the mines here there are a lot of issues like pollution and health problems. There is a beautiful charm this place brings and it has a few attractions like a giant nickel and a massive smokestack you can see from miles away.
This is one of my favorite videos you've done so far (and that's saying a lot after the toxic sand vacuum)! I had zero idea about this before. Its impressive that not only are you able to constantly finding new fascinating material, but that it is all about MICHIGAN! Great work!
Thanks, Randall! I'm excited about how it came out. (Also, there are just so many stories up here! I'm a little convinced that's true of everywhere, though - most of my curiosity just happens to be pointed at this area!)
Great video! I actually grew up in Sudbury and lived there for 28 years. I've seen the city change throughout the the 80's until I moved away in the early 2000's. It once looked like a different planet before there was a big reforestation done in the 80's. 🇨🇦🇨🇦
In 1976 my parents and I drove from Montreal through Sudbury on our way to the Upper Penisula of Michigan. We had no idea about the town and so wondered why suddenly we drove from the northern forests into the deserts of the American South West. Bare rocks stained black and red. Then we saw the smokestacks in Sudbury and understood.
@@dawsonl That stack is in the process of being decommissioned and torn down. The smelter there at Copper cliff is still very much and active part of Vale operations. My father was a medic who had to evacuate a worker off the stack when it was being erected and a tornado hit in 1970.
I've seen the impact rock site in Thunder Bay. Great to learn of the this one! Great conversation with Dr. Canon. And many years ago toured the Sudbury mines.
I was born and raised in Michigan. I'm thankful to you and Bill for putting the knowledge out about the place I call home. One of my hobbies is rock polishing, and I'm tempted to get some of the chert/banded iron to polish one side. I think it would be cool.
Amazing geology lesson and history about identifying this breathtaking impact event. Never knew Michigan was so affected. I've worked at Canadian hydrothermal mineral deposits (not Sudbury) and been long interested in Sudbury's unique geology. If you drive through Sudbury area you'll find a more recent impact is clear as well. For decades the mining companies never scrubbed the SO2 before emitting it and for many miles around the vegetation is still recovering from effects of 'acid rain'. Congrats on the 'Algorithm of Sauron' suddenly providing more viewers!
Dr. Canon recommended this video during his presentation at the Marquette Regional History Center last night, and I'm so glad to have found your channel! Thanks for making such wonderful content!
This video, along with Warren Schlote's video on Sudbury brecchia helping train the Apollo astronauts to recognize impact geology, has totally transformed my understanding of the Lake Superior area. Thank you for the accessible presentation!
This is simply amazing! You make geology as exciting as a mystery novel (so take that, Sheldon Cooper!). Thanks for another fascinating insight into my old vacation spot in the Upper Peninsula.
Aw, thank you so much! That's so heartwarming, genuinely. The storytelling aspect of these videos is a lot of fun for me, and one I think a lot about as I'm drafting!
I am from Denmark and it is great to hear about some of the historic events that created the landscapes of America. I have also studied the history of the Great Lakes and the events of the Colorado river. Interresting - keep up your good work.
Hi Alexis, Thanks for the very interesting interview with ex-USGS Geologist Dr. Bill Cannon and your active presentation and full of curiosity questions. You have a talent to keep your audience interested in the presentation. Well done!! My former thesis degree professor Dr. Jorge Oyarzun - deceased December 2021 - told me once that he was interested in Banded Iron Formations (called BIF's). He had studied the 350 to 450 ºC crystallized Fe ores deposits origin in Chile, mainly formed by Magnetite and Hematite, related to the active Cretaceous Nazca Plate subduction zone activity; these deposits extend for about 750 km. northwards from La Serena to Iquique, parallel to the Pacific ocean coast. So my curiosity was about the Sudbury meteoric impact and Ni deposits link which is why I opened your PW and interview. I am amazed at the size of the impact crater and the major earthquake magnitude 11 (never heard a place with such a record!!), the widespread reach and the size of ejecta. But suddenly in came the BIF's rock fragments. I joined the geology school at Universidad de Chile in 1966 and finished in 1971. My main subjects of interest have been Geochemistry, Metallogenesis and Minerals exploration; of course I am very interested in the tectonic evolution of Chile which is connected to the lengthy Fe and Cu districts which lie on parallel tectonic belts. I have seen several circular impact structures on satellite imagery of Chile, albeit much smaller, in the range of 1 to 5 km. diameter; once saw a major circular structure in Argentina near the border area with Chile, which may have been some 15 to 20 km. diameter in the High Flat Puna region. Aam unaware of anybody studying meteorite impact structures in Chile, but some very beatiful Pyroxene meteorites were found in the Chile High Puna flats near the border with Argentina by a former student of mine. So you are welcome to start their research in Chile. Please accept my regards for your exciting interview work and enthusiasm, and pass my respects to Dr. Bill Cannon for his dedication to geological science research. Jaime ARIAS Geologist - U. de Chile 1971 Ph. D. Minerals Exploration Applied Geochemistry - London University UK, 1978
Great video! I've lived in Chelmsford my whole life, a small rural suburb or Sudbury. From an outdoors standpoint, the geography from the impact is the main reason i love it here so much. A lot of the nearby rocks ejected were later dragged by ice sheets to carve all of the lakes we have today. Two specific spots i love to go are Onaping Falls and Nickel Offset, two of the better vantage points of the few ridge peaks left over where you can tell it's a crater.
I live in Sudbury and the landscape here makes the area very interesting. I have a series of Bike riding videos on TH-cam through trails around Sudbury that is all new growth forest and broken up bedrock, It's very beautiful area and worth checking out. Another interesting thing about Sudbury is how fast nature rebounded once the Nickle smelter stopped belching heavy metals into the air.
my dad has since past away who was a geologist and we also lived in thunder bay and quite familiar with Sudbury. I have interest in different types of rocks and their formations because of him. Great video. I learned something new, thanks again.
This really explains a lot about the rock formations that I see on M-95 up by Koski Corners. Lots of banded iron layers, and then something totally different on top of it. I have to wonder how thick the Sudbury layer was before the last glacial age. The glaciers must have scraped a fair amount of that away and pushed it south into Wisconsin.
@leonardcollings7389 Well, actually, as a Wisconsin resident, and one who has also studied geology, I can tell you that the last great glaciation left a terminal moraine that begins (at least within the boundaries of Wisconsin) right around the city of Madison, and continues on an almost straight line northwest near to about Eau Claire. Everything to the west of that line is called the Driftless Area. It's quite easy to tell when you've entered the Driftless Area in Wisconsin as the topography there is completely different from what you'll find in the rest of the state.
Thanks you and Dr. Cannon for sharing your insight into the Sudbury Impact area and it's impact on your location in Michigan. Getting a lot of geology background back in 1973, I am constantly surprised at how much new information is added to the field. I remember finding out about the Chesapeake Impact Crater in 1983 and could have sworn we learned about that in the 1970s. So I would like to propose that the "Banded Iron Formations" may have ended due to the immense Fire Storms, as a result of the impact, that may have depleted the Oxygen in the air and seas needed to cause their formation. Does anyone else think this is a direction to be explored further by this new generation of Geologists ?
Thanks for sharing your study into a fascinating subject! Much respect for not just investigating this topic, but tracking down an expert and recording your findings. I feel that people like you are the reason our species advances so quickly. My daughter lives in Sudbury. If only I had a nickel for every relative I have that lives in Sudbury :) Cheers!
I am thrilled with this. Fascinating subject. Alexis and Dr Cannon are treasures. Thank you for imparting this knowledge to us. It is wonderful to hear of the formation of Michigan.
Wow! How could you possibly hold me through this entire video? Was it really that interesting? YES!! Awesome work on the video and thank you so much for the mass of information.
The video title pulled me in, the video content held my attention til the end, overall i'm pleasantly pleased, this was a fascinating subject matter to learn about, great video.
So the video title could also be "The Meteor that named his own impact crater". Funny how nature reminds us constantly that we don't understand everything and there is always so much more to learn. This gives me hope for the future. A well presented video as always and I am looking forward to many more videos from you in the future. :)
Ha, fair enough! And it's so true. That also makes me feel hopeful. We have a long way to go in some areas, but someday, we'll probably find a lot of the answers we're looking for. Thanks as always for the kind words!
We live almost smack dab in the middle of the US, and when you dig on our property, you find a wide range of rocks that are not from our local area. I have been looking into the source of these rocks, believing they would be north and carried south by glaciers. They are typically worn smooth as an additional hint. It is hard enough to find info on my little subject, (where concentrations of this or that rock are found, etc) let alone something like this. I can see why it took 2 people 10 years, and they were smarter than I am too.
Wow! I had no idea. I have a lot of relatives in the Sudbury area, some of whom made their living mining nickel. It’s great that you were able to find this fascinating man and that you are enabling the passing on some of his knowledge. Cheers from Moose Jaw Tim
Thank you Alexis! My mind is blown! This was an extinction level event that i never heard about and one of the mind blowing things about this discovery is the shear size of the nickel deposit, that was not a small meteor! Also, i have to wrap my head around the idea that this area was under water because of the iron banding. Just so much to take in and it really is incredible. Thank you again Alexis for bringing this to the internet!
This is the most mind blowing thing I've learned in decades. You going and finding this man and the harmonious why you bring this science to light is food for the mind and soul. I'd adore seeing you two do something else in the future. What's he think of the Clovis Comet? The Carolina bays and Dakota rainwater basins? Ejecta? More please!💚🌏🌍🌎🌠
Thanks, Todd! I'm so glad you enjoyed it. Even months later, this is still one of my favorite projects I've worked on. 🙂 I'd also love to do something again with Dr. Cannon in the future! I've also got a few more videos with subject matter experts on the horizon, both in the geology world and otherwise!
Your bubbly personality and fearlessness to take on these subjects about things in the UP, which I am adopting as my new home, is very catchy and alluring!
Banded iron formed when the oxygen in the atmosphere rose above 4% and precipitated the iron dissolved in water in the “great oxygenation event”. The same structure is present in Western Australia and is a kilometre thick of up to 60% iron (not iron oxide - actual iron content - you can arc weld posts to the rock on the ground). The other possible reason for iron rich sediments stopping forming in an area is it no longer being in sea water due to uplift or direct burial.
Thanks Alexis! Awesome video. Lived in MI all my life, worked with a good friend who came from up by Sudbury, whose ancestors were nickel miners there. His dad is nearing 100, and still golfs and likes his Crown Royal! 😊
I've said it before, and I'll say it again...you have an amazing way of weaving a tail, not just telling the facts. You connect dots across space and time to make a story that is both informative and inspirational.
Aw, shucks. This means a lot - thank you! My hope with these videos is always that they'll be more than just informative, so I especially appreciate this. :)
Very interesting and informative. I was in Sudbury, Ont., for a few days in 1967. There were no trees and no grass anywhere, because of the smelter fumes then. The exposed rocks in Sudbury looked different than in other parts of Northern Ontario. Little did I know that the story of that region's ancient history was changing.
Awesome and informative. Gets me thinking about how much impact (no pun intended) geology has on the evolution of life. And I love the painting of Winterhold behind you on the couch.
Thanks! And right? It's wild. There's so much there to unpack, too. (Also, thanks! Most of the paintings I put behind me when I film are borrowed from other parts of the house, but that one stays on the wall all the time!)
I found this video earlier this year. I had watched a meteor and it was so impressive I tried to search to see if anyone else posted about it. Now I’ve been going down a Michigan geology rabbit hole. That’s the magic of TH-cam sometimes.
Hello! TH-cam seems to be showing this video to a lot of new people - and if you're one of them, welcome! 🥳 If you enjoyed this field trip with Dr. Cannon, good news: There's another one coming along in January! It features a magma almost-island, a tour of ancient, bizarre-looking rocks, and us standing on the Earth's surface as it was more than a billion years ago. You can click here to subscribe if you'd like an update when it launches: th-cam.com/users/alexisdahl
Thanks for being here! 👋
Indeed, TH-cam sent you to me today! Great video, love the channel and your approach. I really like Geology, and telling the "stories" behind the geology is a talent you have that is quite challenging, so kudos to you. I look forward to watching your past videos and have subscribed so I can see your future videos. Thank you for doing this, I (and others) appreciate it! 🙂
@@mikezimmermann2908 Thank you so much! I'm glad you enjoyed the video, and I appreciate the kind words! 🙂
How about a video on the pudding stone and the ultraviolet light glowing rocks..or the Michigan silver wall legend and ancient copper mining...great videos
Just got this recommended today- and was so interesting that it lead me down your rabbit hole learning about my state. Super interesting, so I'll have to take some time to go through all of your videos. This will make vacation a lot more interesting.
My pops in cheboygan is amazed by the geology of his home state. Me as well loving geology in WA srmtate learned alot from a guy nick zenther T cwu
I'm a retired 71-year-old geologist. This fellow is a classic geologist and I love his near final statement about being ready to accept new ideas. This winter, for the 2nd time, I have the privilege of taking nearly twenty geology students to the deserts of the SW to help them better understand geology. At the very least, as one of the other retired geologists said last year to the students, "you have to be able to keep reinventing yourself." That phrase says what being a geology is all about. The science is so young that inevitably our ideas change, and one must change their mind frequently to keep up. It is a great, great science.
Thanks for what you do, Professor. exploring or explaining the hills and desert .
AMERICAN SW
Surely geologists never retire - maybe turn into fossils, but you don't retire! Wish other fields looking back into our ancient past were as ready to accept new ideas & possibilities. Michigan really has so much going for it. Thanks for spreading your knowledge and the desert is wonderful...
I learned so much watching this at lunch today. Very well done and I liked the ending, takeaway especially. Thanks all
And yet Creation science is openly mocked by you, Creation Scientists are banned from entering research areas in the Grand Canyon and institutions are threatened by creationist geologic theories.
Open mind indeed
I’m a retired geologist and earth science educator. I took oceanography from Bob Dietz during my undergraduate days. He came to us as a visiting professor from Scripps and was near the end of his career. Still, he had great stories of his work the early plate tectonics pioneers as well as his impact studies.
Many years later I visited the K-Pg boundary deposits at Raton Pass on the CO-NM border. If you’re up for a field trip, you should visit it yourself.
My takeaway is that I'm reminded again what I used to tell students and museum visitors when I was a exhibit interpreter is that every once in a while the Earth has a very bad day.
Ms. Dahl, I'm a retired geologist. I received an M.S. in '75 from a university in Indiana and cannot believe how much the understanding of the science has changed in that fifty years. I'm currently the head of my graduate alma mater's geology alumni and we're putting trips together to inspire geology students. I'd love to have you meet students over our fall break in 2024 at Marquette to discuss the Sudbury Impact. You''re doing great work! I would enjoy corresponding with you to know some good outcrops up that way.
Thank you so much, Richard! I got your e-mail and will look forward to getting back to you soon. 🙂
⁰😅
Kudos to Dr. Cannon for his humble approach to forwarding knowledge.
I’m a 73 year old, living 100 miles west of Sudbury. My only regret is not becoming a geologist. This field was never presented to girls my age. My retirement is enhanced by everything I can now learn on a daily basis. Videos like this are fascinating. Thank you so much.
I was a Blaster on a highway job on what was thought to be the outer rim of the crater of this impact by Webbwood on Hwy 17 in Ontario. The granite had waves in it that looked like it had been melted plastic. Very cool video! Thanks for doing it.
i know exactly what you’re talking about and it looks so cool, almost like damascus steel
What about the Nickel deposits?
What’s the relationship of the impact and ejects to the nickel?
JWC
@@jayclark2077 most of the nickel is deep deep in the ground, i’ve never seen a deposit of nickel near the surface here
@@jayclark2077 Some meteors are very rich in nickle.
Thanks for this video Alexis. I'm 75 and learned a lot from it. Keep em coming!!!!!
Thank you Alexis and Bill for sharing the history of our Michigan geography.
I did my doctoral work on this ejecta deposit. Really fascinating, and it was wonderful getting to work with Bill Cannon. I am so glad to see such an accessible and well made video about it!
@@SusanWojcickiTheBolshevik
There's always a narcissist looking for every opportunity to make something about themselves.
That's so cool! :D Congratulations, dude!
Where?
I'd like to read the thesis.
I'm over in Wisconsin on the edge of the Michigan limestone "Bowl" . Also lived in Wilmington NC. Near the many Carolina "Bogs" such as Lake Waccamaw.
The thery is that mysterious holes or pits called bogs were created by fallen chunks of ICE . Since there is no othere ejecta to be found in the bog(s). A body of water created by this Sudbury Ejecta from 900 miles away
My wife and I are both geologists and she got her bachelor’s at a Michigan College and is familiar with the UP. We used to vacation near Sudbury, but decided to go to the UP in 2018. We had a fabulous trip. The Sudbury Breccia, of course, but also the Porcupine Mountains, an ancient volcano complex, and the copper mines of the district. Don’t miss the mineral museum at Houghton, but they request you allow two days.
There are several copper mine tours that are wonderful as well.
Somewhere near Marquette is the most spectacular sandy crescent beach I have seen.
The mineral museum is awesome!
@@blaiseutube the log slide
I'm from Sudbury, and we hang out in the UP during the summer.
As Michigander and a bit of a rock hound I found this absolutely fascinating. Thank you so much for sharing
Me too! 😺
@@MaryClareVideos same here! I’m from Marshall, Mi.
@@juliefreds4594 We're near Clare on a small inland lake. We find cool rocks though. 😺
That “roadside park” you guys were at is about 3 miles from my house. When I worked for the township here, I used to mow the lawn and empty the garbage bins there. Great video.
Funny wild history around our typical jobs. Did you know about the Sudbury impact while taking care of this area?
I knew Sudbury was an impact site, but had no idea how massive and (literally) earthshaking that was. Very cool to learn!
I'm glad you got to learn more about it! It was a lot of fun for me to learn about, too.
That’s why we have lots of Nickel here.
@@AlexisDahl Cuba has a massive Ni deposit too, also, from an asteroid strike. I’d love to hear that story too.
Yep, this was the one that tilted the earth, probably.
@danlux4954 most of the nickle used by the allies during WWII was mined from sudbury
Its thanks to videos like this that helped me solve a 30 + year old curiousty related to the sudbury impact. Living on a farm 200 miles south of Sudbury about 40 miles west of Toronto, I happened upon this weird rock in the field. Knowing it was out of place from the local geology I brought back to the house with the aid of a front end loader. It was heavy and about the size of a microwave, it was mostly grey with smaller darker rocks embeded in it. My father right away said it was just a old chunk of concrete, I always questioned that as why would it be so far from any structure or possible dumping site, and why would anybody mix in such small rocks ...basically more concrete than rock not very financially smart I thought. The rock was placed in front of one of the farm builldings where I presume it sits to this day, slowing getting buried again. It wasn't till about 3 years after we had sold the place did I find out what it was, after watching a youtube video on another meteriote impact. It was piece of melted rock ejected from the impact in sudbury called seuvite.
NO, that is not what that rock was. The rock you are talking about was most likely brought there by a glacier some 20,000 years ago, or by a river that was once in that area. Now, I dont know what the rock looks like, but if it looks like concrete, it is a sedimentary rock, which is very common in that region of Ontario.
Most likely conglomerate rock as per your description
SW US desert Geologist here. My hat is always off to my colleagues up north and east who pick through trees, brush, dirt, and moss to see the rocks beneath. Good post. I love how enthusiastic undergrads are!
You forgot about mosquitoes the size of horseflies, and horseflies the size of birds!
My father was a geologist at the Falconbridge mine in Sudbury Ontario.
It’s cool to see how far the impact area spread.
Thank you.
Dr. Cannon seems so charming.😊 I’m sure spending time with him was just an absolute blessing.
Completely! I feel deeply grateful to have been able to hang out with him for a bit!
Great video for amateur rock hounds/collectors and history buffs like myself. This young lady combines brains with beauty.
Loved hearing him say be open to new ideas. We are given the impression that geologists and archaeologists don’t like people challenging the information they built their career on, so ideas move forward reluctantly. I hope the young people watching this question everything and always be ready to be wrong. It is an amazing g trait to be able to hit reset based on new data.
What nice man. I like how he said it was a pleasure to pass along information in ways other than highly technical papers that hardly anyone was ever going to see.
I grew up in eastern Washington state and North Idaho. My father was a forester for a railroad company and geology was a side interest of his. One of the great mysteries of the region was how the Scablands of Eastern Washington were formed. The area covers nearly a quarter of the state. A geologist came up with the radical theory of Lake Missoula and huge ice dams breaking, releasing millions upon millions of gallons of water across what now is North Idaho and Eastern Washington. For decades other geologists thought he was crazy, but step by step, discovery after discovery proved him to be correct. The Scablands are strange and beautiful in their own particular way.
The story of the geology of your region and how it was changed by the Sudbury Impact and the theories behind it remind me of Great Lake Missoula, the ice dams and the formation of the Scablands.
Thank you again for a well told bit of Upper Michigan history, and in this case, geology.
I saw a wonderful film about the formation of the Scablands. It included imagery of the various formations and a stunning animation of what happened to create them. I learned that water 'tornadoes' , bearing various sized sand and stones, literally drilled cylindrical indentations into bedrock in some places. Amazing! Geology can be ... thrilling.
@@ZebaKnight Absolutely! There are some bizarre landscapes out there.
The area west of Spokane WA to the Columbia River is very interesting. Going north or south of I90 can lead you to some very interesting areas such as the terrain near Soap Lake or Palouse Falls, below which is like a miniature Grand Canyon.
Camping out in the Scab Lands can feel odd with the strange rock formations, especially on crystal clear nights.
Then there are Steptoe and Kamiah Buttes, along with the Snake River Canyon, Hells Canyon, the lava beds in southeastern Idaho know as The Craters Of the Moon . . . and of course Yellowstone NS.
I could go on and on. It is quite fascinating.
@@markkover8040 Wow! I'm on the east coast, but I'll keep the list of places you mentioned.
@@ZebaKnight I have lived in SE Virginia for 33 years. I do miss that area tremendously and go back to visit when I can.
I used to live inside the crater lol the Sudbury Basin. You can actually see the crater from edge to edge in certain places, but it’s hard to imagine it’s actually an impact crater unless you were told, it just looks like a very large valley.
The origin of the Sudbury ore body as a meteorite was well known in the 1970’s. My father was a mining engineer and very focused on geology and he noted that to me when I got a summer job working underground in Sudbury as a student in the early 1970’s. Most of the time I worked at the 2,400 foot level. Hard granite interspersed with crumbly, flaky rock. The combination made for dangerous unstable work areas when scaling, roof bolting etc.
I spent my childhood working and vacationing at my grandfathers cabin about 30 minutes from Sudbury and was always entranced by the scale of the mining and local geological interest in the area. I’m very glad to have found this video.
I loved your video and after viewing it, I thought I would have loved being a geologist or an anthropologist, instead I became a military intelligence analyst and afterwards a marketing analyst. I thrived on figuring out the back story and why things/events happen or happened the way they did. I guess I've always been very curious. Now at almost 82,
I photograph birds and butterflies and marvel at the way they are and how they came to be. I like finding the answers. Kind of similar to how geologists live to find and know why the things they discover happened and then tie the pieces together for better understanding and explanations of the world around them. Thanks again.
Wonderful😊
Maybe I am biased, but as a Michigander, this is good content. I love finding interesting little things to do around the state during the summer camping season. I think this would make a lovely stop along the way, Thanks!
I've never been to that part of Michigan but it's on my bucket list now.
I live in traverse city but I try to go to New parts of Michigan every summer, but no matter what time of year I love learning new things about my state!
I'm very happy the algorithm brought this before me
I live just across lake Huron from you near Sauble beach Ontario and have seen many beautiful sunsets looking toward Michigan.
@@0GieLongshank I've only been as far north as Saginaw but now that I'm a retired old foggie I can go as far as I want to.
@@0GieLongshank my Step Father is a park Ranger at Sleeping bear dunes and super Rock obsessed. I can't wait to share this video with him! he lives with my mom in Traverse City. LOL maybe you've seen her dressed as Mother Nature at Environmental Rallies....
IANAG - I am not a geologist, lol. But I learned a bit watching this. Thank you for making this video. It was fascinating, as I didn't know about this event. Your energy and enthusiasm is contagious. Bill is so knowledgeable, not just about the event and how it changed rocks, but the history of discovery. Well done! Again, thank you.
Alexis your energy and excitement is contagious. Your interview with Dr. Cannon was fantastic. The Wonderful world of TH-cam has become better because of you recording Dr. Cannon's experience and wise advice at the end of keeping an open mind.
It's better to have a question you can't answer than an answer you can't question.
I've lived in Sudbury for 52 years now, I knew rocks were tossed from the impact as far as Michigan but this is the first time I got to see one (outside that building). We have lots of rock and mining here and is a great place to live. 330 lakes in our city! Thanks for the video and sharing!
Thanks, John! I'm glad you enjoyed it!
Hello from North Bay, neighbor.
Hello from Sault Ste. Marie, neighbor.
Wow Canada sure can throw big rocks far. Michigan 12-23-2022
Ended up in Sudbury trying to find some Puppers beer and couldn’t find it.
As a kid we went on a family road trip all the way around Lake Superior. My mom encouraged me to collect rocks at stops along the way. At the end of the trip we stayed with my great uncle Ralph Marsden in Duluth, he was head of the geology dept at UM-D. I showed him my rocks and he told me what they were and knew where I found each one. I later learned he was an expert on Iron formations. He was also a government geologist fresh out of college who had the misfortune to be working in the Philippines when it was invaded in WW2. He was a prisoner for the duration of the war and barely survived.
Wow. Great story. I love rocks too 😊
@ I still have that bucket of rocks to this day…
Absolutely Friggin Awesome
This is so crazy to find this video! This summer we learned of the Giant crater while visiting Sudbury and the aforementioned big nickel. In October we were visiting Jasper Knob and the banded iron formation in the Marquette area! We also love the geology of the Thunder Bay area and are from Minnesota. This video brings so many things together!
I visited Sudbury in the 1960s and I remember that as we traveled east toward Toronto for many miles we saw nary a stick of wood, bare rock. This was caused mainly by the emissions of sulfur dioxide by smelting operations leading to severe acidification but remember that since nickel is rare on the surface of the Earth many plants and animals are rather intolerant of it, e.g nickel allergy. My recollection is that even way back then Sudbury was widely thought to be an impact basin. Enjoyed your video very much. Thank you for tackling this subject that has always been of interest to me. By the way my wife is from Sault Ste. Marie and I grew up in Marinette WI.
The acidification was primarily caused by industrial operations in the US surrounding the Great Lakes, which led to the 'death' of hundreds of lakes in Northern Ontario, which led in turn to difficult negotiations between Canada and the US. An agreement was reached and things have improved immeasurably since.
I live in Sudbury currently, and seeing old pictures here always shocks me. Even since I was little, Sudbury has gotten so much greener and hearing stories of when my grandma was little how they just didn't go outside some days, because of how the air pollution was so bad always surprised me when I was little
Being a lifelong citizen of sudbury the geology and landscape of this area is so amazing, you can see the crater where it’s mostly flat farmland and grazing land and surrounding the area is loads of igneous rock cliffs and mounds known as the sudbury igneous complex. Unfortunately due to the mines here there are a lot of issues like pollution and health problems. There is a beautiful charm this place brings and it has a few attractions like a giant nickel and a massive smokestack you can see from miles away.
This is one of my favorite videos you've done so far (and that's saying a lot after the toxic sand vacuum)! I had zero idea about this before. Its impressive that not only are you able to constantly finding new fascinating material, but that it is all about MICHIGAN! Great work!
Thanks, Randall! I'm excited about how it came out. (Also, there are just so many stories up here! I'm a little convinced that's true of everywhere, though - most of my curiosity just happens to be pointed at this area!)
Yeah, that's kind of the lesson here, there's interesting stuff around...you just have to be curious and look.
You are a fine TH-cam docent for interesting geology in the Great Lakes region. Thank you for introducing me to the Sudbury impact and Dr. Cannon!
Great video! I actually grew up in Sudbury and lived there for 28 years. I've seen the city change throughout the the 80's until I moved away in the early 2000's. It once looked like a different planet before there was a big reforestation done in the 80's. 🇨🇦🇨🇦
🇺🇸🇺🇸🇺🇸
In 1976 my parents and I drove from Montreal through Sudbury on our way to the Upper Penisula of Michigan. We had no idea about the town and so wondered why suddenly we drove from the northern forests into the deserts of the American South West. Bare rocks stained black and red. Then we saw the smokestacks in Sudbury and understood.
@@dawsonl That stack is in the process of being decommissioned and torn down. The smelter there at Copper cliff is still very much and active part of Vale operations. My father was a medic who had to evacuate a worker off the stack when it was being erected and a tornado hit in 1970.
if you're from Ontario you must be slightly annoyed by how she's pronouncing sudberry haha.
i don’t think there tearing that stack down, they said they would years ago and nothings been done
I've seen the impact rock site in Thunder Bay. Great to learn of the this one! Great conversation with Dr. Canon. And many years ago toured the Sudbury mines.
that's neat, I've been to sudbury a few times and always found it interesting how suddenly the rocks seemed to change in that area.
I was born and raised in Michigan. I'm thankful to you and Bill for putting the knowledge out about the place I call home. One of my hobbies is rock polishing, and I'm tempted to get some of the chert/banded iron to polish one side. I think it would be cool.
I love those seasoned and knowledgeable professionals about their life's passion about our world!
So personable too!
Amazing geology lesson and history about identifying this breathtaking impact event. Never knew Michigan was so affected. I've worked at Canadian hydrothermal mineral deposits (not Sudbury) and been long interested in Sudbury's unique geology. If you drive through Sudbury area you'll find a more recent impact is clear as well. For decades the mining companies never scrubbed the SO2 before emitting it and for many miles around the vegetation is still recovering from effects of 'acid rain'. Congrats on the 'Algorithm of Sauron' suddenly providing more viewers!
I had geologists in my family and though I didn't get to attend university myself, I still love seeing people geek out over rocks!
Dr. Canon recommended this video during his presentation at the Marquette Regional History Center last night, and I'm so glad to have found your channel! Thanks for making such wonderful content!
Thank you ! I have been curious about Michigan's geology, but no idea it was THIS interesting! Thanks for sharing Dr. Cannon and his insights with us.
My pleasure, genuinely! I'm always just so surprised and delighted by how many cool stories I keep finding in Michigan. I'm glad you enjoyed this!
This video, along with Warren Schlote's video on Sudbury brecchia helping train the Apollo astronauts to recognize impact geology, has totally transformed my understanding of the Lake Superior area. Thank you for the accessible presentation!
Some would say Bob Dietz' idea was....out of this world 🌎
Ill see myself out
Love learning about geologic events that shaped our world, particularly in the Midwest where it's a bit hidden. Thanks!
This is simply amazing! You make geology as exciting as a mystery novel (so take that, Sheldon Cooper!). Thanks for another fascinating insight into my old vacation spot in the Upper Peninsula.
Aw, thank you so much! That's so heartwarming, genuinely. The storytelling aspect of these videos is a lot of fun for me, and one I think a lot about as I'm drafting!
Geology Rocks! 😃
I am from Denmark and it is great to hear about some of the historic events that created the landscapes of America. I have also studied the history of the Great Lakes and the events of the Colorado river. Interresting - keep up your good work.
Hi Alexis,
Thanks for the very interesting interview with ex-USGS Geologist Dr. Bill Cannon and your active presentation and full of curiosity questions. You have a talent to keep your audience interested in the presentation. Well done!!
My former thesis degree professor Dr. Jorge Oyarzun - deceased December 2021 - told me once that he was interested in Banded Iron Formations (called BIF's). He had studied the 350 to 450 ºC crystallized Fe ores deposits origin in Chile, mainly formed by Magnetite and Hematite, related to the active Cretaceous Nazca Plate subduction zone activity; these deposits extend for about 750 km. northwards from La Serena to Iquique, parallel to the Pacific ocean coast.
So my curiosity was about the Sudbury meteoric impact and Ni deposits link which is why I opened your PW and interview. I am amazed at the size of the impact crater and the major earthquake magnitude 11 (never heard a place with such a record!!), the widespread reach and the size of ejecta. But suddenly in came the BIF's rock fragments.
I joined the geology school at Universidad de Chile in 1966 and finished in 1971. My main subjects of interest have been Geochemistry, Metallogenesis and Minerals exploration; of course I am very interested in the tectonic evolution of Chile which is connected to the lengthy Fe and Cu districts which lie on parallel tectonic belts.
I have seen several circular impact structures on satellite imagery of Chile, albeit much smaller, in the range of 1 to 5 km. diameter; once saw a major circular structure in Argentina near the border area with Chile, which may have been some 15 to 20 km. diameter in the High Flat Puna region.
Aam unaware of anybody studying meteorite impact structures in Chile, but some very beatiful Pyroxene meteorites were found in the Chile High Puna flats near the border with Argentina by a former student of mine. So you are welcome to start their research in Chile.
Please accept my regards for your exciting interview work and enthusiasm, and pass my respects to Dr. Bill Cannon for his dedication to geological science research.
Jaime ARIAS
Geologist - U. de Chile 1971
Ph. D. Minerals Exploration Applied Geochemistry - London University UK, 1978
Great video! I've lived in Chelmsford my whole life, a small rural suburb or Sudbury. From an outdoors standpoint, the geography from the impact is the main reason i love it here so much. A lot of the nearby rocks ejected were later dragged by ice sheets to carve all of the lakes we have today. Two specific spots i love to go are Onaping Falls and Nickel Offset, two of the better vantage points of the few ridge peaks left over where you can tell it's a crater.
I live in Sudbury and the landscape here makes the area very interesting. I have a series of Bike riding videos on TH-cam through trails around Sudbury that is all new growth forest and broken up bedrock, It's very beautiful area and worth checking out.
Another interesting thing about Sudbury is how fast nature rebounded once the Nickle smelter stopped belching heavy metals into the air.
INCO planted lots of trees
@@danlux4954 Yes I think was over a million and they did a great job of making it look like a natural forest.
my dad has since past away who was a geologist and we also lived in thunder bay and quite familiar with Sudbury. I have interest in different types of rocks and their formations because of him. Great video. I learned something new, thanks again.
This really explains a lot about the rock formations that I see on M-95 up by Koski Corners. Lots of banded iron layers, and then something totally different on top of it.
I have to wonder how thick the Sudbury layer was before the last glacial age. The glaciers must have scraped a fair amount of that away and pushed it south into Wisconsin.
South is Ohio, Indiana, and Illinois. Glaciers pushed down to 37 degrees.
A great question.
@leonardcollings7389 Well, actually, as a Wisconsin resident, and one who has also studied geology, I can tell you that the last great glaciation left a terminal moraine that begins (at least within the boundaries of Wisconsin) right around the city of Madison, and continues on an almost straight line northwest near to about Eau Claire. Everything to the west of that line is called the Driftless Area. It's quite easy to tell when you've entered the Driftless Area in Wisconsin as the topography there is completely different from what you'll find in the rest of the state.
@@ScottysHaze Yeah, the moraines are really fascinating!
@@leonardcollings7389 if you are in the upper peninsula of michigan than Wisconsin is to the south 🙈
Thanks you and Dr. Cannon for sharing your insight into the Sudbury Impact area and it's impact on your location in Michigan. Getting a lot of geology background back in 1973, I am
constantly surprised at how much new information is added to the field. I remember finding out about the Chesapeake Impact Crater in 1983 and could have sworn we learned about
that in the 1970s. So I would like to propose that the "Banded Iron Formations" may have ended due to the immense Fire Storms, as a result of the impact, that may have depleted the
Oxygen in the air and seas needed to cause their formation. Does anyone else think this is a direction to be explored further by this new generation of Geologists ?
excellent video. Dr. Bill... what a guy.
Thank You and Dr. Cannon very much for this educational and entertaining vid!
I love all the stories about what took place in Michigan you are finding and sharing!
Thanks, Erik! I'm genuinely surprised at how many of them I keep running into. There's no shortage of fascinating stuff around here!
Great enthusiasm for science. And a passion for telling stories about where you live. Great stuff!
Really interesting discussion. Bill is amazing. Shared with my buddy from Michigan!
Fantastic video! I love your enthusiasm - it is what motivates true learning. The scale of the impact staggers the imagination.
Thanks for sharing your study into a fascinating subject! Much respect for not just investigating this topic, but tracking down an expert and recording your findings. I feel that people like you are the reason our species advances so quickly.
My daughter lives in Sudbury. If only I had a nickel for every relative I have that lives in Sudbury :)
Cheers!
I love learning about my neck of the woods. thanks for this.
I am thrilled with this. Fascinating subject. Alexis and Dr Cannon are treasures. Thank you for imparting this knowledge to us. It is wonderful to hear of the formation of Michigan.
I loved "earth science" as a child. My teacher was amazing. Truly taught me to think. Thx 4 this!!
This man is Amazing! Thank You!
Wow! How could you possibly hold me through this entire video? Was it really that interesting? YES!! Awesome work on the video and thank you so much for the mass of information.
I love the energy. It’s easy to see the absolutely unbridled curiosity you’ve got going on and it’s wonderful.
Aw, well, thank you! I appreciate it.
The video title pulled me in, the video content held my attention til the end, overall i'm pleasantly pleased, this was a fascinating subject matter to learn about, great video.
So the video title could also be "The Meteor that named his own impact crater". Funny how nature reminds us constantly that we don't understand everything and there is always so much more to learn. This gives me hope for the future.
A well presented video as always and I am looking forward to many more videos from you in the future. :)
Ha, fair enough! And it's so true. That also makes me feel hopeful. We have a long way to go in some areas, but someday, we'll probably find a lot of the answers we're looking for.
Thanks as always for the kind words!
Thank you both. Love the Marquette area and was lucky enough to have lived there for awhile. I love geology. Thank you for this video.
We live almost smack dab in the middle of the US, and when you dig on our property, you find a wide range of rocks that are not from our local area. I have been looking into the source of these rocks, believing they would be north and carried south by glaciers. They are typically worn smooth as an additional hint.
It is hard enough to find info on my little subject, (where concentrations of this or that rock are found, etc) let alone something like this.
I can see why it took 2 people 10 years, and they were smarter than I am too.
I really like that man, Dr Cannon! I just love souls like his. I also like you, your love and enthusiasm!
I love science, geology and the history of our planet. You bring out excitement and enthusiasm in your teaching of these subjects and I thank you.:-)
Great video, and I love the paintings in the background! If you painted those, excellent work!
Wow! I had no idea. I have a lot of relatives in the Sudbury area, some of whom made their living mining nickel. It’s great that you were able to find this fascinating man and that you are enabling the passing on some of his knowledge. Cheers from Moose Jaw
Tim
Thank you Alexis! My mind is blown! This was an extinction level event that i never heard about and one of the mind blowing things about this discovery is the shear size of the nickel deposit, that was not a small meteor! Also, i have to wrap my head around the idea that this area was under water because of the iron banding. Just so much to take in and it really is incredible. Thank you again Alexis for bringing this to the internet!
Nicely done. Very informative. Made me feel like I was back in Geology class at Michigan State University in 1983.
that is one heckuva field lesson! It all makes sense when it's explained by the evidence!
OMG I LOVE the bow shirt!
Wow that's very interesting. Thank you Alexis and Dr. Bill Cannon
This is the most mind blowing thing I've learned in decades. You going and finding this man and the harmonious why you bring this science to light is food for the mind and soul. I'd adore seeing you two do something else in the future. What's he think of the Clovis Comet? The Carolina bays and Dakota rainwater basins? Ejecta? More please!💚🌏🌍🌎🌠
Thanks, Todd! I'm so glad you enjoyed it. Even months later, this is still one of my favorite projects I've worked on. 🙂 I'd also love to do something again with Dr. Cannon in the future! I've also got a few more videos with subject matter experts on the horizon, both in the geology world and otherwise!
There is no soul, but I get your meaning.
There's more? 👍
@@seanjones2456 Until fairly recently, a "soul" was a creature that breathed. Animals were souls too. Language changes, sometimes in very weird ways.
Thank you Alexis and Dr Cannon. A very informative and well put together video.
Awesome video, Alexis! Probably my favorite one yet.
Aw, thank you! It's definitely up there for me as well.
Your bubbly personality and fearlessness to take on these subjects about things in the UP, which I am adopting as my new home, is very catchy and alluring!
Banded iron formed when the oxygen in the atmosphere rose above 4% and precipitated the iron dissolved in water in the “great oxygenation event”.
The same structure is present in Western Australia and is a kilometre thick of up to 60% iron (not iron oxide - actual iron content - you can arc weld posts to the rock on the ground).
The other possible reason for iron rich sediments stopping forming in an area is it no longer being in sea water due to uplift or direct burial.
Thanks Alexis! Awesome video. Lived in MI all my life, worked with a good friend who came from up by Sudbury, whose ancestors were nickel miners there. His dad is nearing 100, and still golfs and likes his Crown Royal! 😊
Wow what an incredibly underrated channel. How do you not have at least 10x more subs?
I did science camps at MTU two different summers in the 80s, and so wish I'd known about this then! Thank you both, this is so exciting and cool!
I've said it before, and I'll say it again...you have an amazing way of weaving a tail, not just telling the facts. You connect dots across space and time to make a story that is both informative and inspirational.
Aw, shucks. This means a lot - thank you! My hope with these videos is always that they'll be more than just informative, so I especially appreciate this. :)
...weaving a tale.
@@checkenginelightison8317 my bad...thanks for pointing that out.
Very interesting and informative. I was in Sudbury, Ont., for a few days in 1967. There were no trees and no grass anywhere, because of the smelter fumes then. The exposed rocks in Sudbury looked different than in other parts of Northern Ontario. Little did I know that the story of that region's ancient history was changing.
Awesome and informative. Gets me thinking about how much impact (no pun intended) geology has on the evolution of life. And I love the painting of Winterhold behind you on the couch.
Thanks! And right? It's wild. There's so much there to unpack, too. (Also, thanks! Most of the paintings I put behind me when I film are borrowed from other parts of the house, but that one stays on the wall all the time!)
I found this video earlier this year. I had watched a meteor and it was so impressive I tried to search to see if anyone else posted about it. Now I’ve been going down a Michigan geology rabbit hole. That’s the magic of TH-cam sometimes.
Im a meteorite collector/hunter , and rockhound, this was an awesome video. Love hearing about geology
That’s a video worthy of a fancy bow shirt. I always wondered what one called those funny looking shirts. EXCELLENT video.
Whole video has me thinking of Joe Pera. That guy loves his rocks!
Ha ha, oh, man! I haven't watched (yet), but there are definitely a lot of good rocks to marvel at around Marquette!
Most interesting! Thanks for bringing it to us ! 😊