Exotic Terranes of the Pacific Northwest
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- เผยแพร่เมื่อ 9 ก.ย. 2024
- CWU's Nick Zentner presents 'Exotic Terranes of the Pacific Northwest' - the 20th talk in his ongoing Downtown Geology Lecture Series. Recorded at Hal Holmes Center on February 21, 2018 in Ellensburg, Washington, USA. www.nickzentner.com
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I wish I'd had more teachers like you. I used to think rocks were boring. I was wrong! Thank you for expanding my knowledge and understanding of where I live.
I remember being told back in 1984 that we simply did not understand the west coast the way we understand the Appalachians. It's wonderful to see how much progress we've made.
It is amazing to see how the science has advanced in the past thirty or so years that I've been following it. I'm really glad to see that we are learning so much about the US and Canadian West Coast.
Quite frankly it’s probably understood better than the Appalachians at this point. I live in them, I bet you they were bigger than Everest. Sucks though, the gold is 200 million years deep as opposed to 50 max LOL
Given how old they are it’s much harder to understand; for instance I can only infer they were that large. They could’ve been even greater, maybe smaller. It’s undoubtedly certain they’re more than 50% completely eroded, that leaves a lot of clues. Geological history that no longer exists to tell the stories. What I can tell you is think about how flat the land East of the mountains are, they’re completely built from the sediments of the mountain. There’s 0 volcanic/tectonic traces anywhere near the coasts yet the lands above sea. Delawares over 100 miles away from the mountains. Also, look up Boulder field PA. It’s probably the most underrated geological feature in America.
I’m just learning about this now and it’s an awesome theory! I’m a chef by trade but rocks are my next best friend.
Nick, you piss me off!... I have been content in my old age and thought my life full.. then a few years ago I saw one of your lectures... now I watch all I can get and wish I was a young man again.. I would be a geologist for sure.. you make geology fascinating, fun and very very compelling... I am going to spend this summer driving to the areas in Washington that you speak of (I live in vancouver wa.) and look with new eyes at all the beauty you have taught me... Unfortunately I will not be able to climb and hills nor walk a long way but I can certainly see some of the road side sites you have mentioned.. This is going to be a fun summer.. thanks my friend for lighting a fire in an old man! Maybe I can find you there and tell you to your face thank you!
Memorable comment. Thanks! Come visit!
Agree wholeheartedly @tinkmarshino. I developed an interest in geology about 7 or 8 years ago, and then stumbled on Nick's lectures while researching the Cascadia Subduction Zone. I was hooked. I've learned more from Nick than anyplace else I've thumbed through online. Superb instructor and I hope his students appreciate what Nick brings to the game.
It is amazing his ability to teach.. He just draws you in.. I am gonna go visit the lad this summer..I think he would be aqn amazing fella to talk to..
Indeed. I don't know that I'll ever get a chance to meet him because I don't get to go east of the Cascades very much. But next time he's in Portland/Vancouver I'll try to look him up -- get an autograph -- shake his hand ("I'll never wash this hand again") -- ok that's a bit much. But anyway, we all get smarter by hanging around smart people. And Nick is certainly that. Enough rambling, back to the show....
hey Brian E I live in vancouver.. you are welcome to come with me this summer
Zentner is the high bar for teachers everywhere. What a pleasure to have these informative, fun lectures available here on TH-cam.
I enjoy Nicks presentations !
Now in the time the virus concerns and shutdowns of schools, it would be time to share this bunch of videos with parents of the kids looking for something to do.... Good for the parents too.
Can't say enough good things about Nick and his lectures. I'm hooked!
I'm currently watching these videos for a second time after a couple of month; I even bought a book on geology in my country thanks to these.
Thank you Mr. Zentner and CWU for putting these up, these videos are real gems!
If there's any such thing as a rock star geologist, Nick is that guy. He is the Eric Clapton of plate tectonics.
Agree 100%!
I concur 💯
Fully
@@willctheroysolved6408999pp 000p0000lp9
Does that mean Nick Zentner is God?
I've been watching his current series about exotic terranes and had to rewatch this.
Nick, you are the best teacher EVER!! I'm glad you are back, I have watched all your lecture like 4 times each!!
7munkee im right with you. I have watched them many times too
Thanks! Glad that you are enjoying the lectures.
And I thought I was the only one who watched them multiple times! I should have known better. They are so interesting.
I discovered Nick during our various lockdowns here in Australia and have not let up watching his vids since. Now I want to live in Seattle.
You have renewed my interest in Geology. I have been binge watching your presentations since I found you on TH-cam.
Same kinda getting interested in archeology and how different the world our ancestors lived in and part of the story is geologic so here I wound up
Fascinating! I love that the geologic story is still evolving. You do a great service!
Thanks Michael!
I bet Nick’s midterms and finals are BRUTAL though!
Thank you for this wonderful presentation. I graduated from Erasmus Hall High School in 1961 in NYC with a Commercial course, no Earth Science classes back then. It's so enjoyable for my brain to learn new stuff and you present it so that I can understand it. Thank you from the bottom of my heart.
Nice to hear, Marian. Thanks for taking the time to write. Come visit!
Damn
Would love to have had this guy as my Geology lecturer.
Great news
I can get this now
⭐️⭐️⭐️⭐️⭐️ 👍👍👍👍👍
I was blessed with one like nick at UT El Paso. Made me fascinated with Geology. Nick is so good at his presentations.
I sincerely wish i had a teacher like you. You have an enthusiasm for knowledge thats contagious and ive been researching ancient geology and i found you and watched it and i haven't stopped watching your videos one after another absorbing as much knowledge as possible Thank You for all You do for us.
Such fun! I'm glad these videos were put online.
I’ve learned more from Nicks videos about geology than I ever did in school. Ty❤
Wish I knew what I've learned in one day of watching your lectures when I lived in Washington.
But now I also recognize the basalt formations here in Ct. Always heard my hometown of Meriden, ct was an ancient caldera. The basalt columns surrounding the city confirm it.
I was thrilled to see a new video from Mr. Zentner... thank you for taking the time to make this for us...your subject matter is so interesting..
Thanks much. I enjoy putting these together. Nice to hear that you are enjoying them.
Your full lectures are far better than the 5 minute shorts, Love your stuff!
I agree! Thank you.
Damn, you are great! This is all so fascinating, i've been binging your videos for a few days now in between work!!! Please never lose your love for teaching for everyone's sake!!
Love from Tasmania, Australia
Also i wanted to add that Tasmania has a connection to North West America. Which i thought you might be interested in, if you didn't already know. I only registered it through watching your lectures!
"The island's oldest rocks seem to have originated when that part of the island was attached to western North America. Analysis of monazite and zircon in rocks of the ancient Rocky Cape Group in north-west Tasmania found that they are between 1.45 billion and 1.33 billion years old. These minerals, strongly resemble those found in Montana, Idaho and southern British Columbia."
Thanks Sophie! Hello from America. Really nice to hear that you're enjoying these down there. Thanks for the info below.
Adding one more. I’m Dutch (nothing but very young stuff here, Holocene and Pleistocene sands) and i’m currently binge-watching your lectures and contemplating coming out there just for the geology.
Hallo Tassie. Nick has caused me to wander around my boring suburb in Western Australia looking at rocks. I love it.
Thank you, for this! The more I watch for videos, the more clearly I understand the geology of our Pacific Northwest.
You the man Nick. I live in NH and look to move to the Tacoma area. As a child I would look at mountains and wonder how they got there. They still fascinate me at 57. I love the views of the volcanoes on my approach to Sea-Tac. Thank you for the knowledge.
Are you insane?
What a find you are! This was big fun, as are all your lectures.
Your classes are awesome. Very interesting listens, thank you :)
Just another comment saying I love these lectures. They're fun and insightful, even for people not living in the area. Hello from the SFBA.
I am now hooked on your lectures Mr. Zentner! Amazing stuff. I am not a geologist at all. Just love to learn about the past
Fascinating! Mind blowing! Too cool! Thanks to Mom, I collected my first fossils at 6 years old. (Devonian from Pennsylvania)
Nick, I've watched a LOT of your lectures - not quite all yet, but I'm getting there - and this one was the most dramatic, by far. I'm casually - only casually - familiar with some of the geology you talk about ... BUT this was brand new to me. Holy cow! Mexico in Washington state. It is a superb challenge to wrap my mind around this kind of movement with such convincing evidence. Thank you!
Best standup routine on TH-cam
Love ya, Nick! I've always been interested in geology, but I didn't know how complex the geology of the Pacific Northwest truly is.
I lived in Washington State for 3 years in the 80s and have been back here for almost two years. Since I am now retired , I have the time to peruse online things like Nick Zentner's lectures. And because I'm currently in the Pacific northwest (out on the Kitsap), I decided it was time I learned about the geology of the area.
I found Nick Zentner's videos recommended to me because of my browsing on TH-cam. I am so glad I checked him out! I really enjoy his various lectures. Some geology professors have been known to make me fall asleep, but not Professor Zentner. As tinkmarshono below has noted, he makes geology fun and interesting. If I had been able to take one college-level geology course, Nick Zentner is precisely the type of professor I would want to be teaching the course!
This video is one of his best. I've long known that the West Coast of North America is a collection of 200 or so exotic terranes, but now I've learned that part of the Washington's crust used to be Mexican crust. I'd never even remotely considered that. I love to learn new things, and I've learned a lot from these lectures. Rock on, Nick Zentner!
Outstanding presentation! Thanks for posting.
Thanks CWU & professor Nick for posting this great series. I studied geology at Illinois State off and on from '78 to '87 and only had field camp to finish but life goes on... I am continually amazed by how much I remember and can infer, this series is a joy to listen to!
This guy is a "Rock" star!
I have been viewing the other You Tube talks that Nick Zentner has given over the past years. This one is yet one more that I gave a hour to watch. Very important to know the topics, and he really is a student of this land mass of N. America and the state of Washington seems to be a great classroom of earth changes. Thank you Nick.
Thanks for the comments. Yes, Washington is a great place for geology!
That is a really well chalk-drawn map of the Northwest.
Welcome back Nick! Hope there is more to come.
Thanks! 3 more new lectures will be posted in the coming weeks.
Hey, Nick, another great lecture. Thanks! I know it's not really a WA but do you have any plans to make a presentation on Mr. Mazama/Crater Lake?
Good idea. Will add to my list. Thanks.
Your hair looks particularly nice in this video, Nick - it's a great fade!
Ha! I'll tell Jamie at www.northwestbarber.com/ !
I so enjoy Nicks lectures. :)
Nick, you are the Carl Sagan of Geology. Thank you.
Thanks!
Super interesting lecture Nick. I was going to email you to see when you were going to put out some of this years lectures. Thank you and love all of your lectures
Thanks Scott!
I found you looking at Cascadia Earthquake information and fell into the binge rabbit hole of watching everything you have out. Great work! I'm a Whidbey Island transplant from Arizona and it's nice knowing what I'm looking at traveling around.
Welcome to Washington, Sean. Come visit Ellensburg!
This presentation was fantastic. Thank you for sharing.
This guy makes geology UNDERSTANDABLE (and also "not boring" at all; makes you think).
Thanks.
fantastic videos, he ha so many too, wonderful watch, TY Sir...
Thanks Nick, I discovered these lectures a month ago. I'm a big fan.
Thanks much. Nice to hear.
Passion is truth and with passion you are... Thanks
I really enjoy this lecture series and am thrilled we finally have worked our way to the many scraps of exotic terranes. I’m not a Geologist or even really that knowledgeable on Geology but I did study Geology at Whatcom Community College (I’m originally from Ellensburg so put the pitchforks down villagers) and one of our field trip was to Sucia Island which is a fascinating place with a lot of interesting features to study Geology on to include a very old piece of exotic terrane accreted and grafted onto the island itself.
Jealous of your trip to Sucia. Thanks for watching.
Thank you soo much for the lectures. Been loving them!
Sir, I don't know how many times I have seen this presentation before, but in every one of them, I learn something new and exciting, enough to stimulate my tiny brain!
Thank you Sir, very much indeed, for the zeal you present your material. It's riveting to say the least. And, Sir, thank you also, very much, for your hard work in presenting these instructional events.
Oscar
Thanks Oscar. I enjoy putting them together.
Thanks Nick. You make what you talk about so interesting. I just discovered you on TH-cam a week ago. I will watch all the videos you produce. Thanks Nick.
Just found these lectures about a week ago, and I've watched almost all of them now. What am I going to do with my life when I'm done? You've got me fascinated with geology, and now I'm wondering how to find out the geological stories of my own part of the country, in Alabama. Suddenly, I just have to know! My house backs up to an area of old iron mines from around the early 20th century. Of course they're all grown over now but when and how was that iron deposited in that rock? Oh, also there's a big cut in Red Mountain that goes through layers and layers of different type of rocks. How do I find out more information?
All of your videos are about the Pacific Northwest, which is a very interesting place, but are there similar cool stories about the geologic past of other parts of the country and the world? How did the big earthquake in South Carolina happen, and what's the story there? What's the future risk? My nuclear plants (I'm an engineer) are in Georgia and southern Alabama and I'm interested in the history and future risk of those places, too. How did I never realize geology was so fascinating before?
Thanks so much for your lectures. Please make more!
Hello from the Northwest! Glad that you've enjoyed the lectures. All of my stuff is at nickzentner.com There's a reason I live here....tough to beat it for geology. Best wishes to you.
Thank you for another great video
I've seen every single one of these in the past week. Can't wait for more! Super-fascinating!
WOW so very good . Reminds me of Robert Jonas 1973WSU. Thank you!
Love the groovy intro music.
Thank you for another great video presentation!
Watching from an exotic terrane. Beautiful stuff, thank you
Ha! Thank you.
I'm from WI, so thank you, Nick!
On Wisconsin.
3:15 thank you! I was about to go grab the dictionary to look up terrain because I thought I was going batshit crazy.
Can’t wait to come see your lectures live
You're welcome anytime.
I live in Arizona, where I was born. I want to tell you about Squaw Peak, a granitic mountain in the Central Highlands of Arizona. I used to hike up there and I found 100s of old core samples and saw that it was a grey granite. Northwest of that is Jerome, an old copper mining town. The interior of western north America is full of copper deposits. The copper at Jerome is from black smokers at a spreading center, and the granite is from a batholith under a volcano, from a back arc volcano at a subduction zone. More puzzles.
Thanks for the report, Laura.
Having watched all of your videos and been totally inspired by them one can only wish that it would be incredible if there were a thousand cloned Nick Zentners located in all of the very interesting geologic regions of the world and explaining their geology in a similar fashion to what you do about the Pacific North West. The Siberian Traps and the Deccan Traps come to mind and so many other fascinating places around the world. However we will persevere and just enjoy the fact that there is one Nick Zentner who teaches in the most beautiful, interesting and informative fashion of just one spectacular region on the planet. And also greetings from Australia. Please keep up the brilliant work. I can see that it is most appreciated.
12/26/18. I got to watch on my big screen TV through widgets. Happy and Healthy new year and we need more tutorials. Thanks
Nice! Thank you, Marian. There is plenty at nickzentner.com
I cant get enough of this but nobody in my life wants to talk about it!
We're all here Patrick! Talk away!
I know! People look at me like *I’m* the crazy one!
Yah, Patrick. Like we all got a buncha rocks in our heads, huh? :))
Another very interesting presentation, thank you very much, I stay glued to my chair watching all of your talks, authentic and outstanding speaker!!
Thank you!
A very good presentation of thought provoking material...Well done Prof. Zentner.
Thanks very much.
Great lecture series!
How about one on the Olympic Peninsula? Origin, features, etc.
I know that you've touched upon it in several lectures already but it would be nice to see a more geographically focused lecture.
Thank you so much for sharing your knowledge.
What a teacher ... Explaining complex things in an understandable manner ...
With his gestures, enthousasm and knowledge ... I sometimes think he must be a descendant of Fred Flintstone ... ;)
Great Job !!!
Dear Mr. Zentner,
A friend who's a 4th generation native Seattle-ite and a retired history teacher with broad Pacific NW experience & degree in regional native anthropology from UBC, has told me repeatedly of how Lake Washington used to be a seawater inlet until Mt. Rainier/Tahoma's (the Osceola lahar) cut off its link to the Sound, so that it became a freshwater lake. He's told me of the marine vs. freshwater fossils in/around the lake, and similar evidence for the shift.
I've been hunting through your lectures and related posts, and can find ZERO mention of this geologic fact. And all the "history" of Lake Washington talks about it being freshwater, and people yammer on and on about the water levels in L. Washington and L. Union being different as well as higher than sea level, presenting settlers with the challlenges of building the locks. Even the submerged forests in the lake are attributed simply to earthquake-related landslides-but no mention of lahar.
I would really love to see a solid (possibly interdisciplinary?) lecture on this aspect of geologically recent history.
Deb S., Tacoma resident
Thanks Deb. I've done a Mount Rainier's Osceola Mudflow lecture....but I didn't talk much about changes to bodies of water in Puget Sound. Good idea. I'll that to my list.
Fascinating. There is serpentine rock in the Illinois River, Josephine County to Curry County Oregon. Serpentine along Bear Camp road, Gold Beach along the Rogue River. Bear Camp road between Gold Beach and Grants Pass Oregon.
Wild Rogue Canyon and the Kalmiopsis Wilderness.
I like this theory a lot Nick and you do a nice job of explaining it and providing evidence. I have played this for a couple of my courses so they can get a local flavor for PNW origins. I worked on the Table Mountain Formation east of San Diego which likely tapped into the old Poway system to obtain green metavolcanics. Thus I especially like the notion of using zircons and stream systems that are now disconnected as piercing points. Looking forward to more videos.. you provide a valuable educational service here. Many thanks!
Thanks much, Sean!
I am currently reading “Ancient Landscapes of Western North America” and found your lecture to be a wonderful supplement. You visually explain what is some ponderous reading of the same information. I will finish your whole series and wait impatiently for new videos. Thank you.
Thanks Donald! All of my stuff is at nickzentner.com
Nick where were you when I thought about going into geology. Half my life wasted wondering where all this lava came from in Idaho & eastern Oregon.
Yellowstone hotspot:
The Yellowstone hotspot is a volcanic hotspot in the United States responsible for large scale volcanism in Idaho, Montana, Nevada, Oregon, and Wyoming as the North American tectonic plate moved over it.
It formed the eastern Snake River Plain through a succession of caldera-forming eruptions.
The resulting calderas include the Island Park Caldera, the Henry's Fork Caldera, and the Bruneau-Jarbidge caldera.
The hotspot currently lies under the Yellowstone Caldera.[1]
The hotspot's most recent caldera-forming supereruption, known as the Lava Creek eruption, took place 640,000 years ago and created the Lava Creek Tuff, and the most recent Yellowstone Caldera.
The Yellowstone hotspot is one of a few volcanic hotspots underlying the North American tectonic plate; others include the Anahim and Raton hotspots.
en.wikipedia.org/wiki/Yellowstone_hotspot
Snake River Plain:
The Snake River Plain is a geologic feature located primarily within the U.S. state of Idaho.
It stretches about 400 miles (640 km) westward from northwest of the state of Wyoming to the Idaho-Oregon border.
The plain is a wide, flat bow-shaped depression and covers about a quarter of Idaho.
Three major volcanic buttes dot the plain east of Arco, the largest being Big Southern Butte.
Most of Idaho's major cities are in the Snake River Plain, as is much of its agricultural land.
en.wikipedia.org/wiki/Snake_River_Plain
Craters of the Moon National Monument and Preserve:
Craters of the Moon National Monument and Preserve is a U.S. national monument and national preserve in the Snake River Plain in central Idaho.
It is along US 20 (concurrent with US 93 and US 26), between the small towns of Arco and Carey, at an average elevation of 5,900 feet (1,800 m) above sea level.
The protected area's features are volcanic and represent one of the best-preserved flood basalt areas in the continental United States.
en.wikipedia.org/wiki/Craters_of_the_Moon_National_Monument_and_Preserve
Click for map of Snake River Plain/Yellowstone Hot Spot Trail, with dates of past eruptions in millions of years ago (mya). The dash in the age indicates a range. ie, 2-0.6 = between 2 and .6 million years ago (.6 million = 600,000 years).
lh3.googleusercontent.com/proxy/ftv_XibP3FO_nUgjsqW3wDIF7bHsn0E-sQmjiT6ng4Xs8SJvHQ1fuGnXZVcGdLNiaGsyl2Kfk7EwdR2JKtTipar3amUqxHgA5kwaMVFeAGfcyOz36nVPiEkFSTHM83UEowYi8QOoOSplqtoEko8ZmuzFaL27qCeJmBGFuZXC
encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQWDWWvYN2j7ZgUQ3oSwQ_Ac8R6AK8O_5crnm7QdgCS2FeZihy6&s
Great presentation, as usual!
Thanks Geoffrey!
Great presentation Professor. Thank you.
Thanks for watching, David.
Great series ,I got caught up in your series looking for info. on wire gold .That led me to your Liberty Gold series and all the rest.Here in Central Alberta its all about the Fossils and Moraine very little " chocolate cake" left after the Ice Age.The Wife and I enjoy checking out the rocks while fishing on the Red Deer.Petrified wood ,dino. teeth and bone fragments ever time out.If you and your family get up into Alberta you must check out Dry Island Buffalo Jump Provincial Park and Cypress Hills Interprovincial Park. As for a TH-cam channel, the Royal Tryrrell Museum of Palaeontology has Guest Series Speakers on Fossils from around the World ,as well as behind the scenes look of the museum.For all those looking for great info. on the cutting edge on the world of fossils there is none better on the net.
Thanks Mike! And thanks for the tips.
I wish I had taken my geology courses with Zentner. Excellent professor!
Thanks Jeremy!
Nick, you rock. Thanks for your effort.
Great Lecture! I always enjoy Nick's lectures. I lament only that we do not have a Nick equivalent down here in New Mexico.
Nice comment, Steve. Thanks for watching!
I really like this guy!!
I really wish that map of yours included Canada, especially being based in Washington, I'd love to see the connection to B.C. I'm biased of course, being a hoser, but the point stands.
B.C. Isn't it funny that the geology on either side of that line knows to stop dead at that 49th parallel??? :)) How does it do that?? Doing geology research northeast of Metaline Falls 3 miles south of the international border and a mile west of the Idaho border, that artificial line used to drive me just crazy trying to get maps and professional research papers!! Funny how the rocks themselves can be so wonderfully inclusive and integrated, but the human politics can't. Must be the rocks are more intelligent. FYI, many of my students were from BC and I was invited to do my Ph.D. at UBC on old volcanoes east of Bella Coola. People tell me I still speak with a soft Canadian accent. :)) I do hope so, eh!!
The thigh bone came from a Tyrannosaurus Mex
Way awesome lecture! I love the explanation behind the Baja-BC, definitely learned a lot of new information!
Thanks!
Just a few thousand years to go and I can be part of the Washington shoreline. For now I'll to stay here in Ventura.
Thank-you so much for new lectures! So interesting to see how the BC theory is playing out. After your first youtube lecture about Mt. Stuart and the magnetic positioning of the whole batholith, I've been mulling over how the granites could have traveled so far north plowing up a path to Washington! But yeah, you make it make sense. Also, seems that this type of activity of the terranes may explain the opening of rifts deep in the crust to create the conditions for the basaltic ruckus 18 ma. (while holding hands with the Yellowstone hot spot).
My one complaint (other than the audio) is that I would love to see reading references listed in your description (please?).
Thanks for watching. Email me and I'll send you some papers.
Who would give this a thumbs down? Young earthers?
Haters gonna hate, Karen!
morons who think the earth is, like, 6000 yrs old; in other words, people who don't matter anyway!!
Karen Parkkonen Nope, it’s disgruntled Canadians. 🇨🇦
I received my degree in geology in the late 1970’s. So much has changed since then. My professors were more interested in stratigraphic record - so plate tectonics were covered - but you could tell they were not excited about it. So I am enjoying this. Spent my career in the oil/environmental industry.
Um ok? Thanks for sharing?
There are also lots of terrains almost 500 million years old West of Mt. Shasta. I hiked through there; lots of schists, chert, and serpentenite surrounding a granite pluton. Very cool place!
Good to know.
This is how I found you Nick !
Nick Zentner is Fabulous!
I'm watching all his videos!
I never realized how much I love Geology!
Our 'world' is floating on magma! Nick! mention the Coriolis force! Pacific Plate clockwise rotation? (I'ts not just for meteorology) only a theory ;)
Thanks!
You remind me of my Dad (Also a Collage Professor)
Added to the basic concept of paleomagnetics, is what was learned via US Navy surveys in the late1950s / early 60s.
These surveys, when plotted on a large-scale map of the seabed, looked like a large, slightly wonky checkerboard. This was because the survey plotted the magnitude and DIRECTION of the residual magnetic field in the rock, a field that was "frozen" in alignment at the time the magma was air or water cooled.
The POLES reverse on what appear to be a "regular" (geologically speaking), intervals. The implications of a collapse and reversal of the magnetosphere are grim: no magnetic field, or a significantly reduced one, heralds rough times for life on the surface, especially animal life. The cosmic / solar radiation deflected by the planet's magnetic field has free reign to fry the surface of the planet until the magnetosphere re-establishes itself, regardless of the polarity when that occurs.
Navigators have known about the movement of "Magnetic North", for quite a while. If you look at the "marginal information on a military / "real" map, it will have a diagram and text detailing the "magnetic deviation" at the time of survey / printing AND an annual rate of FURTHER deviation. This is so people can safely use magnetic compasses to find their way home, instead of falling off a cliff or similar.
Because of the non-homogeneous nature of the planet, the deviation at any one time differs ALL OVER the world.
It did occur to me that even though a super eruption would spread out on all directions, in 3-D there would be a heavy upward column that would be blown by wind slightly before it would collapse, thus it would still be a teardrop shape that would make it to eastern Nebraska!
Sir, just excellent information, and great presentation too.
Thanks Oscar!
I love learning about geology. But I’m a complete amateur. Seriously amateur.
I grew up in Medford OR and got an Engineering Physics degree from Oregon State in 1980.
You are one of the best speakers I’ve ever heard...and seen. And I’ve spent a lot of times in classrooms including medical school at USC after OSU.
I absolutely love driving from Medford through Klamath Falls. Especially between Klamath Falls going through Lakeview OR on to Denio in Nevada and down the highway in Western Nevada through Winnemucca, Battle Mountain, Austin, Tonapah and on through Las Vegas. On the way to my current home in Amarillo TX. I love the terrain. All of it. But I wish I had your eye for geology.
I promise I won’t shoulder role out of the car when you start talking geology!
I’d really like to know the geology of 3 main sections. Tonapah down to Las Vegas to the West mainly, Lakeview Or to Denio, NV and Medford to Klamath Falls OR.
Of course I’d love to know about Las Vegas to Kingman AZ and I40 through AZ and NM all the way to the Eastern NM border. I’ve studied the Texas Panhandle where I live but I’m always open to new suggestions.
The most interesting to me are Lakeview OR to Denio NV. Just out of Denio NV to the SSW is a swimmable hot springs on the top of a lava flow Mesa..
And Tonapah to N Las Vegas (just East of Death Valley). The land looks like it’s been uplifted, folded and flipped over like an egg on a fry cook’s grill.
Any suggestions on books, research papers, documentaries, home movies, vacation slides, etc., would be truly welcome.
I’m sorry if that sounds greedy. But it is. I will hold any recommendations from you in the highest regard.
I promise. If you don’t have the time to respond, I understand.
Perhaps you could look into the geology and history of Palo Duro Canyon. About 30 minutes SSW of Amarillo TX. The 2nd largest Canyon in America.
Great geology but also picturesque and great American history. Nobody has ever heard of the 2 guys (and many others) they sent out, like Lewis and Clark, up the Red River hoping to find the source near Santa Fe in the mountains. Lewis and Alexander. I think.
That didn’t work out. Just a vague river origin on the Llano Estacado, staked plain.Stakes either for navigation or to tie horses to. Nobody knows for sure.
That’s where I live. Amarillo (yellow) TX.
They failed to get to Santa Fe. So no history books or colleges named after them.
Oh. One more thing. Why is the only place to find opals in The US in NW Nevada? Is that where the Southern end of the Flood Basalts is. Leaving the right conditions for opal formation?
www.sfgate.com/connectlocal/nevada/article/Search-for-opals-in-northern-Nevada-s-Virgin-5445950.php
And the Doherty Slide.
en.wikipedia.org/wiki/Doherty_Slide
Thanks for any info you can suggest.
More important.
Hanks for these vide TH-cam knowledge gems.
Thanks much. Plenty busy here in Washington. There are now good Roadside Geology books for most of the western states....second editions with much more detail, maps, and photos than the first editions 30 years ago.
Nick Zentner Thanks for responding. That means a lot in this internet era.
I’ll do some more homework about those areas that I drive through.
Stop by and we’ll visit Palo Duro Canyon South of Amarillo if you ever pass through on I40.
Great geology at the 2nd largest canyon in the USA.
Nearly everyone does “pass through” Amarillo on I-40 at some point in their life.
Avoid the buried Cadillacs.
@@msmeyersmd8 Hey Michael, there are opal in Morrow County in the western Blue Mountains, a place called Opal Butte. Enjoy the ride.
Nick, everyone gives you respect (and rightly so) for your knowledge and enthusiasm about geology, and your ability to convey those to your audience. But this also needs to be said: You have MAD chalkboard skills! And you're pretty good with a hand-held microphone, too! Top marks all around, except for one little thing: you pronounce "etc" as "EK-settera." It should be pronounced "ET-settera." Other than that, you're perfect!
Who the fuck cares how he pronounces anything?
@@eggprantful What a silly question! Clearly, I do. Lots of other people do, too. But thanks for your opinion, Johnny Chain. You don't care that I pronounced that wrong, do you?
THIS IA REALLY GOOD AND BELIEVABLE MATERIAL . . . .
THANK YOU. . . .
I used to preform plays when I was a kid in Ellensburg. I'm really getting interested in this.
Good to know.
Thanks for sharing life with enthusiasm,nick and Family yeehaw
Thanks for watching, Michael.