For that matter, it is not SUB-sid-ence (sid like sit = no-no). The correct pronunciation is sub-SIDE-ence, from subside or subSIDE with just -ence tacked on. The word come from subside, not from subsidy. Google "robot to pronounce subsidence" and the computer does all the example work.
Mr. Cook, as a lifelong resident of the State of Florida, I encourage you to pronounce the name of our aquifer in whichever manner works best for you. Those who choose to belittle others who have learned words and names by reading text in the absence of hearing them pronounced are a bit shameful in my opinion. Thank you for what you do. I hope you had a great time in the Canyons.
"Floridan" is what I've usually heard it called in the mining industry here, but either way is acceptable. Floridians are sometimes called Floridiots too.
I live here in Florida, and made a well at a ranch a while ago. At first we only dug about 30 feet down and the water we got out of it had an extremely high concentration of iron. If you filled a bucket with water and left it out for a few hours, it would turn completely red and opaque. It wasn't until we took the well deeper that we got clean water. This was in the SW region.
01:44 The way you describe the beauty of the canyon and its geological history is truly captivating! Your ability to connect the stunning landscape with deep time and natural processes is inspiring and makes me appreciate the world in a whole new way. Thank you for sharing this incredible insight!
Thinking about deep time in terms of geological features is such a humbling thing. My background is in astronomy and astrophysics, so ive mostly been humbled by the sheer size of the universe. With geology, I have another direction to be humbled in, but in this case its with time instead of space
Deep time - Yes, that concept was first formulated in the 1700s and pushed by atheist philosopher David Hume, along with The Comte de Buffon in France, and Erasmus Darwin (grandfather of Charles), to name a few; but what evidence did they have?.
@@rocketscientisttoo _"Reality is that which, when you stop believing in it, doesn’t go away"_ - Philip K. Dick Seriously, this is science (and critical thinking, and deductive logic). Let's leave religions out of it.
@@rocketscientisttoo In my opinion, learning about geological history is a great way to gain a deeper appreciation for all the majestic beauty we find all around us. It's a great way to gain a deeper appreciation of all of creation.
I love your perspective on time and how you break down the changes between deposition, erosion, etc all in the same location. I started me geology journey watching you and it’s become a real passion of mine. I picked up a roadside geology book for my state and have learned so much
Thanks for another wonderful teaching video. I would never have guessed the irregular positioned red rock in cliffs in your areas like that - what it looks like as founded so long ago compared to newer cases like Florida, and especially such visible ones as in Yucatan. I enjoy the things you teach so well, how to see what something looks like after such long and different lengths of form and change.
Sobering thoughts. As a Floridian for 51 years, I always thought Florida was just a big sand bar. He explains that the sporatic sink holes over our limestone strata (2500' deep) will expand over millions of years. Right now more coastal high-rise condos are experiencing foundation settlement causing costly damage to buildings. 13:06 He is suggesting parts of Florida will eventually collapse under water!
I’ve been a secret sub for the last few months…maybe even a year. I’ve been catching up. I’m just a curious gal feeling like a microscopic dot in Earth’s timeline. I love your content. What I have learned other than the physical aspects of our earth’s changes is that it has always survived. One way or another. Renewing its self and its life forms. And that earth will continue to evolve with or without us. We truly have been given the ultimate opportunity. Thank you for your content. 🌲
Another awesome (and I use that term advisedly!) video, Myron. But glacial breccias? At least in deposits formed by glaciation itself, you're not going to find them, because the moving ice is so good at grinding things down. Sure, you're going to find broken rock falling on glaciers, but unless its stagnant, the tills are going to be overwhelmingly more common! As a denizen of a postglacial landscape, I am mystified by some of the erosional deposts I've seen in the American southwest. Heading out of Las Vegas for the Grand Canyon, the road cuts through what I could swear was a till, but there have surely been no glaciers there recently.... I'd love you to treat erosion of all kinds that you would find in Colorado river drainage!
That drone shot at 1:40 - stunning!! Really beautiful stuff, thank you for being so generous with your knowledge and taking us on these adventures with you.
17:32 - Just south of Gainesville, Florida, is a feature called "Paynes Prairie". I have a buddy from school at UF who's father remembers the feature being a lake and a regular ferry service across the lake to Micanopy. On year a hurricane blew in, and the ground opened up, and the lake disappeared creating the "Prairie". Ranchers started using the land to graze cattle. After a number of years the sinkhole got clogged and the lake began to refill. The ranchers dynamited the sinkhole to open it up again. After a few years, a unique ecosystem evolved on the "prairie", and the lake began to refill, and the ecologists studying the feature dynamited the sinkhole to open it up again. Since then, the ranchers and ecologists have conspired to keep the lake from re-appearing...
First it was grizzly bears and volcanoes. Now it's Florida becoming a desert with deep canyons cutting thru it! That may occur if the Rio Grande Rift cuts thru Mexico to set the Yucatan Peninsula and the Caribbean Plate in motion towards the north to collide with Florida.
Always enjoy watching your geology videos. This is right up there and answers lots of my questions about how different places in the world look strangely alike.
I’ve daydreamed about the geological similarities between the Yucatán and Florida more than once. It’s nice to know my time was not wasted and to learn the larger picture. Thank you.
Wonderful video, thanks Myron! I really appreciate your modern day examples and white board explanations- helping us see the story of this amazing canyon, and the processes of geology! ⭐⭐⭐
Myron, your videos are (and should be used as) a masterclass in great education. This is the polar opposite of the canned curriculum approach that has been pressed into so many classrooms, an open invitation to be curious about the world, to indulge a little question about a funny-looking rock with an enthusiastic mentor. I’m thinking back to my years in the classroom (as a student), and it strikes me that I can’t even remember the names or the faces of some of the people who I spent an hour or more with for 180 days; in contrast, there are others who shine in my memory. In retrospect, the difference is about things like that little tree in your cross-section-a detail that I can imagine my former associate principal (when I had become a teacher myself) would have frowned at (followed up in the post-observation with a snotty remark about “distractions” and “lost instructional time). That little tree, and the moment of fun that let me relax for a second before wrapping my brain around a new chunk of information, is an illustration of how a great educator transcends above the bulleted list of learning objectives and creates a distinct memory that anchors its roots in my mind long after the actual details of the lesson have been assimilated into the greater tree of knowledge that grows around it (pardon my slip into the fanciful metaphor; yet another thing that I got an earful about during the bi-annual assessment when I realized that I could no longer abide by the direction my administration had acceded to). Apologies for the digression and the ridiculously lengthy comment, but your videos are an inspiration, and I hope that you continue to breathe life out into the world via your whiteboards, hikes, guided questioning, and wide drone shots for as long as it brings you joy!
Went digging on the net about sinkholes and found this map: Karst Map Of Conterminous United States 2020. Your videos on geology are always so fascinating Myron.
It's so flat in much of Florida I close my eyes when I am in the passenger seat going over the causeways so I can pretend there is a hill. The limestone used to build the fort in St. Augustine and found in the Intracoastal Waterway and elsewhere is known as coquina and is made up of mostly tiny shells, the outcroppings will be stunning.
Amazing! 20 minutes explanation of beautiful caves, cenotes, limestone dissolution and karst collapses - and then all of a sudden "no, that's not the case..."! Great trick to make amazing video!!!
I had a house in Vero Beach Highlands, FL ~ 2miles from the Atlantic coast. in the garden, dug a hole 2-3 feet deep; there were altenating Layers of black humus and sand, each a few inches thick. So the area may have been over water and under water, sea-level, several times repeating over geologic time!
I love your style of presentation. Rather than just tell, you ask us questions then guide us to the answers. Really effective teaching/learning method! (I've learned a lot from your videos.)
We exist within a perception of time that complicates understanding the timescales of large scale universal processes. You do a really great job of explaining geologic process while barely mentioning the time periods involved, in a way that makes it easier to understand.
Absolutely fascinating. Is Ha Long Bay in Vietnam another example? I believe your New Guinea photo may have been Raja Ampat? I was there but did not realize what i was seeing. Thanks for a great video.
My mother has a poor opinion of all social media, for reasons i generally mostly agree with. A couple months ago you in spired me to make her a list of the best and most scrupulous science communicators on youtube. Once i get it to 25 I'm gonna share it with her.
Wonderful videography as well as presentation by Myron Cook. This is awesome! At first, I was thinking some music could go behind the majestic canyon shots, but I enjoyed the silence as well!
@NicoleVoracka has brought up a subject like one I have also been wondering about involving stone spheres. On the east coast of the UK, fossil hunters regularly find trilobites and other fossilized creatures in stone spheres. Thank you for another fascinating video.
From what I've seen I think the Grand Cayon was the deepest part of the ocean in the past because they have found fossils up there that just might prove it
Hi Myron, Wyoming sure is a big state (I'm in Maryland, which is much smaller). I would guess there is a lot of iron in that Breccia layer to explain the red coloration, which seems in concert with your findings. Yes, I noticed that the Breccia layer seems continuous and not spotty the way I would expect Cenotes at be.
As an aircraft engineer in The Netherlands this stuff is non of my business but i find your sharp eye on geologic clues of historic events in nature fascinating. I'm sold on your geo-video's.
What Myron highlights, with sea levels going up and down hundreds of feet over time due to natural changes in our climate, earth's crust and sun, is the crazy fear-mongering by uneducated influencers (looking at you, Al Gore) about man-made climate change that might move sea-level up/down by just a few inches. Our species need not panic, we just need to gradually adapt, as nature has adapted to such change over the millennia.
This is truly fascinating! Thank you for another excellent, easy to understand geology lesson, Myron :) I really enjoyed your explanation of how cenotes are formed. All the best from Brittany, western France.
The only sad part about this video is we will not be here to see the beauty imagined in another 5k to 1M years from now. Excellent episode, thanks for sharing.
10:32 There is an arc of cenotes in Yucatan, all originated 66 million years ago when the Chicxulub asteroid hit. They are a uniform arcing distance from the "point" of impact due to the shock waves of the impact where they stressed the pre-occurring limestone the most, created cracks, and then the cenotes grew by acidic erosion from there.
5:17 That layer looks like it could be from a ice dam flood like the Missoula floods. That is the very first thing that I saw, but I'm not a geologist.🤷♂
Myron Cook, I would suggest that you explain what limestone is composed of. Most people would be amazed to learn about how much marine lifeforms died to form limestone. The sequestered carbon that is in just this video came from a high atmospheric carbon dioxide atmosphere. With the ocean being close to carbonic acid than the more basic it is now.
Thank you very much, Myron, another lovely, interesting video. I was thinking of an underwater landslide, the red layer looks very turbulent. I would never thoght of karst, fascinating!
Dr. Cook, I should have added. I am aware of snow avalanches. For decades I skied the high and far. Skiing the top of yesterday's avalanche is terribly erose. Much like if a farmer had covered his fields in rounded granite boulders, you are skiing a rock garden. Snow sliding down a mountain trades potential energy for heat. The snow warms with the exact amount of energy in relation to the change in elevation. Often, rolling snow compacted slush balls when the slide comes to rest, and freezes rock hard in minutes or hours. And the surface looks exactly as erose as your cliff face layers.
Very cool. To complete the story, it looks like the karst terrain was uplifted for a time and formed caves, which collapsed. Then it was submerged again, and buried under new layers of limestone. And then it was again covered with sedimentary rock ,before being uplifted again, and eroded into canyons.
@@myroncook Cool to know. I guess that's a whole other video about how the ocean basins get more and less shallow, changing sea level in the process. But surely there was a bit of both, I mean, that location is very high up now.
One thing missing. The red iron stain wou.c not be seen in Florida as the clays have close to the lowest levels of iron in the world. So no red stains except if someone left a car or other human tech to rot.😊
Wonder what clays will be deposited 10 million years from now. (Aren't those iron-oxide rich layers strictly a thing of the past though? I thought they only formed during the Precambrian when Earth first acquired substantial free oxygen.)
@alexhajnal107 the reason for the low iron was that there was no vulcanism that could provide the iron. The Atlantic could close up and create the volcanoes as the mountains wore down and mixed the white clay with the iron rich mud from the volcanoes,but that will take quite a while and might not even happen that way.. (with "a while"taking on a major burden)
Fascinating video, love the discussion of breccia’s. Your discussion of collapse features and subsequent breccia formation certainly helps with an outcrop in Gillespie County, Texas. We have these large limestone blocks with breccia cobbles and pebbles within it and the topography during the time of formation was flat, but there were karst features. I so appreciate your thinking and will revisit the outcrop tomorrow morning. (Also, the aquifer in Florida is the Floridan Aquifer, not Floridian. An frequent error, easily understood.) Many thanks Myron!!!
Wonderful. Have you ever thought of doing some videos on Hells Canyon? I was part of a support team for a long distance, bicycle trip for a friend of mine who is doing a weeklong bicycle trip around the area of southern Oregon and south east Oregon, and I had no idea Hells Canyon was ever there!! For such a huge geological anomaly that is bigger in size in some ways than the Grand Canyon. Why are we not hearing more about this beautiful part of Oregon the Wallowa mountains are just stunning as well.
![[LIVE] : ONE ลุมพินี 88 | คู่เอก "ป้อมเพชร vs อัสลามจอน"](http://i.ytimg.com/vi/1ZqTVVbMgbo/mqdefault.jpg)
A couple of viewers have informed me that I pronounced the Floridan aquifer wrong....I said it as "Floridian"...oops
Sorry, I had to, I sit atop it, and I'm a hydogeo.. so...
For that matter, it is not SUB-sid-ence (sid like sit = no-no). The correct pronunciation is sub-SIDE-ence, from subside or subSIDE with just -ence tacked on. The word come from subside, not from subsidy. Google "robot to pronounce subsidence" and the computer does all the example work.
geologists use it both ways
Mr. Cook, as a lifelong resident of the State of Florida, I encourage you to pronounce the name of our aquifer in whichever manner works best for you.
Those who choose to belittle others who have learned words and names by reading text in the absence of hearing them pronounced are a bit shameful in my opinion.
Thank you for what you do. I hope you had a great time in the Canyons.
"Floridan" is what I've usually heard it called in the mining industry here, but either way is acceptable. Floridians are sometimes called Floridiots too.
It's always a good day when another Myron Cook video drops..
Too true!
I live here in Florida, and made a well at a ranch a while ago. At first we only dug about 30 feet down and the water we got out of it had an extremely high concentration of iron. If you filled a bucket with water and left it out for a few hours, it would turn completely red and opaque. It wasn't until we took the well deeper that we got clean water.
This was in the SW region.
You have the best geology videos. Appreciate the time you spend on them
01:44 The way you describe the beauty of the canyon and its geological history is truly captivating! Your ability to connect the stunning landscape with deep time and natural processes is inspiring and makes me appreciate the world in a whole new way. Thank you for sharing this incredible insight!
thanks!
I was a geology major once upon a time before I was called to another life. Still love learning more, so I am happy to have your videos!
Thinking about deep time in terms of geological features is such a humbling thing. My background is in astronomy and astrophysics, so ive mostly been humbled by the sheer size of the universe. With geology, I have another direction to be humbled in, but in this case its with time instead of space
Here's another example of Einsteins special relativity at work, it seems space and time are truly inexplicably connected
I was gonna say are they not the same
@@autotek7930 two faces of the same coin
Deep time - Yes, that concept was first formulated in the 1700s and pushed by atheist philosopher David Hume, along with The Comte de Buffon in France, and Erasmus Darwin (grandfather of Charles), to name a few; but what evidence did they have?.
I've heard someone once say astronomy shows us our insignificance in space, and geology in time.
Myron Cook is such a talented educator! He makes geology so easy to understand. These videos all seem like they could be on PBS
Agreed, absolutely wonderful.
Appreciate you taking the time to go down to Tulum to shoot this video. The sacrifices you make in the name of teaching geology are commendable!
Nice little tax write off on a trip to the beach - would be negligent not to see it in person 😏
Did you say geology? Don't you mean atheism?
:)
@@rocketscientisttoo _"Reality is that which, when you stop believing in it, doesn’t go away"_ - Philip K. Dick
Seriously, this is science (and critical thinking, and deductive logic). Let's leave religions out of it.
@@rocketscientisttoo In my opinion, learning about geological history is a great way to gain a deeper appreciation for all the majestic beauty we find all around us. It's a great way to gain a deeper appreciation of all of creation.
I love your perspective on time and how you break down the changes between deposition, erosion, etc all in the same location. I started me geology journey watching you and it’s become a real passion of mine. I picked up a roadside geology book for my state and have learned so much
Awesome! Thank you!
Thanks for another wonderful teaching video. I would never have guessed the irregular positioned red rock in cliffs in your areas like that - what it looks like as founded so long ago compared to newer cases like Florida, and especially such visible ones as in Yucatan. I enjoy the things you teach so well, how to see what something looks like after such long and different lengths of form and change.
Your exposition of geologic time is fascinating; profoundly fascinating! Marvelous! Thanks!
but not more than a guess anchored to how much money you will lose if you do not tow the line.
Thank you so much for sharing this! A masterclass not only in geology but in teaching in general! Thank you!
Sobering thoughts. As a Floridian for 51 years, I always thought Florida was just a big sand bar. He explains that the sporatic sink holes over our limestone strata (2500' deep) will expand over millions of years. Right now more coastal high-rise condos are experiencing foundation settlement causing costly damage to buildings. 13:06 He is suggesting parts of Florida will eventually collapse under water!
Yes. It's not very good news for the iguanas and gators. Saltwater is bound to take over.
Oh yes. Sealevel rise will submerge most of Florida
You, sir, have the soul of a poet. Always informative and enticing. Thanks!!😎
thank you!
I’ve been a secret sub for the last few months…maybe even a year. I’ve been catching up. I’m just a curious gal feeling like a microscopic dot in Earth’s timeline.
I love your content. What I have learned other than the physical aspects of our earth’s changes is that it has always survived. One way or another. Renewing its self and its life forms. And that earth will continue to evolve with or without us. We truly have been given the ultimate opportunity.
Thank you for your content. 🌲
Thank you for continuing to create quality content!
Thanks 🙏🏻👍🏻
Another awesome (and I use that term advisedly!) video, Myron. But glacial breccias? At least in deposits formed by glaciation itself, you're not going to find them, because the moving ice is so good at grinding things down. Sure, you're going to find broken rock falling on glaciers, but unless its stagnant, the tills are going to be overwhelmingly more common! As a denizen of a postglacial landscape, I am mystified by some of the erosional deposts I've seen in the American southwest. Heading out of Las Vegas for the Grand Canyon, the road cuts through what I could swear was a till, but there have surely been no glaciers there recently.... I'd love you to treat erosion of all kinds that you would find in Colorado river drainage!
I have never seen a glacial breccia but there is no reason it couldn't happen and I fully expect that it has
That drone shot at 1:40 - stunning!!
Really beautiful stuff, thank you for being so generous with your knowledge and taking us on these adventures with you.
It's great to see you again, Myron! Keep up the amazing work
it is amazing, just like what my favorite magician does.
You take me where I've been many times and make it new again. Thank you so much.
Hey Mr Cook, always enjoy your geology lessons! Keep up the great work! Hello from Nova Scotia, Canada.😀👍👌✌
been there...great sea food!
17:32 - Just south of Gainesville, Florida, is a feature called "Paynes Prairie". I have a buddy from school at UF who's father remembers the feature being a lake and a regular ferry service across the lake to Micanopy. On year a hurricane blew in, and the ground opened up, and the lake disappeared creating the "Prairie". Ranchers started using the land to graze cattle. After a number of years the sinkhole got clogged and the lake began to refill. The ranchers dynamited the sinkhole to open it up again. After a few years, a unique ecosystem evolved on the "prairie", and the lake began to refill, and the ecologists studying the feature dynamited the sinkhole to open it up again. Since then, the ranchers and ecologists have conspired to keep the lake from re-appearing...
interesting!
I am learning so much from your videos. I had no idea a person can tell so much from looking at rock. Keep up the good work
Im glad theres a new video. I've been binge watching the channel and running out of unwatched videos.
Keep up the outstanding work.
First it was grizzly bears and volcanoes. Now it's Florida becoming a desert with deep canyons cutting thru it! That may occur if the Rio Grande Rift cuts thru Mexico to set the Yucatan Peninsula and the Caribbean Plate in motion towards the north to collide with Florida.
Always enjoy watching your geology videos. This is right up there and answers lots of my questions about how different places in the world look strangely alike.
I’ve daydreamed about the geological similarities between the Yucatán and Florida more than once. It’s nice to know my time was not wasted and to learn the larger picture. Thank you.
Wonderful video, I so enjoy learning about geology with you. So much fun, you are a treasure!! Thank you for sharing and teaching!!
Wonderful video, thanks Myron! I really appreciate your modern day examples and white board explanations- helping us see the story of this amazing canyon, and the processes of geology! ⭐⭐⭐
Myron, your videos are (and should be used as) a masterclass in great education. This is the polar opposite of the canned curriculum approach that has been pressed into so many classrooms, an open invitation to be curious about the world, to indulge a little question about a funny-looking rock with an enthusiastic mentor.
I’m thinking back to my years in the classroom (as a student), and it strikes me that I can’t even remember the names or the faces of some of the people who I spent an hour or more with for 180 days; in contrast, there are others who shine in my memory. In retrospect, the difference is about things like that little tree in your cross-section-a detail that I can imagine my former associate principal (when I had become a teacher myself) would have frowned at (followed up in the post-observation with a snotty remark about “distractions” and “lost instructional time).
That little tree, and the moment of fun that let me relax for a second before wrapping my brain around a new chunk of information, is an illustration of how a great educator transcends above the bulleted list of learning objectives and creates a distinct memory that anchors its roots in my mind long after the actual details of the lesson have been assimilated into the greater tree of knowledge that grows around it (pardon my slip into the fanciful metaphor; yet another thing that I got an earful about during the bi-annual assessment when I realized that I could no longer abide by the direction my administration had acceded to).
Apologies for the digression and the ridiculously lengthy comment, but your videos are an inspiration, and I hope that you continue to breathe life out into the world via your whiteboards, hikes, guided questioning, and wide drone shots for as long as it brings you joy!
Wow! That was so interesting! And your photography in Wyoming is incredible. Thank you Myron for another great video!
Your simple pleasure in examining and explaining these geological phenomena is just contagious...keep up the great work!
Many thanks!
I look forward to your videos. Every one of them opens my mind to new things. This one did not disappoint.
Another great teaching video. Thank you Mr Cook.
Teaching or is that indoctrinating?
Went digging on the net about sinkholes and found this map: Karst Map Of Conterminous United States 2020. Your videos
on geology are always so fascinating Myron.
It's so flat in much of Florida I close my eyes when I am in the passenger seat going over the causeways so I can pretend there is a hill. The limestone used to build the fort in St. Augustine and found in the Intracoastal Waterway and elsewhere is known as coquina and is made up of mostly tiny shells, the outcroppings will be stunning.
Amazing! 20 minutes explanation of beautiful caves, cenotes, limestone dissolution and karst collapses - and then all of a sudden "no, that's not the case..."! Great trick to make amazing video!!!
So much love and admiration for Earth in your videos. This is how I believe our planet should be treated.
I had a house in Vero Beach Highlands, FL ~ 2miles from the Atlantic coast. in the garden, dug a hole 2-3 feet deep; there were altenating Layers of black humus and sand, each a few inches thick. So the area may have been over water and under water, sea-level, several times repeating over geologic time!
Thank you Myron. I always am happy to see what you have for us.
I love your style of presentation. Rather than just tell, you ask us questions then guide us to the answers. Really effective teaching/learning method! (I've learned a lot from your videos.)
Hello my friend. Always good to see you.
Hey, thanks
We exist within a perception of time that complicates understanding the timescales of large scale universal processes. You do a really great job of explaining geologic process while barely mentioning the time periods involved, in a way that makes it easier to understand.
When I took Geology 101 at UF way back when, we studied the geology of California, because, the Prof said, "Florida doesn't have any geology."
Absolutely fascinating. Is Ha Long Bay in Vietnam another example? I believe your New Guinea photo may have been Raja Ampat? I was there but did not realize what i was seeing. Thanks for a great video.
yes
My mother has a poor opinion of all social media, for reasons i generally mostly agree with. A couple months ago you in spired me to make her a list of the best and most scrupulous science communicators on youtube. Once i get it to 25 I'm gonna share it with her.
Stunning views. Thank you.
Great job! The possible geology of tomorrow is excellent subject!
Wonderful videography as well as presentation by Myron Cook. This is awesome! At first, I was thinking some music could go behind the majestic canyon shots, but I enjoyed the silence as well!
Fascinating as always. Thank You.
Absolutely love your channel and work! Thank you, Sir!!
Yay, Myron!
Happy to see you again!👍🏻
@NicoleVoracka has brought up a subject like one I have also been wondering about involving stone spheres. On the east coast of the UK, fossil hunters regularly find trilobites and other fossilized creatures in stone spheres.
Thank you for another fascinating video.
From what I've seen I think the Grand Cayon was the deepest part of the ocean in the past because they have found fossils up there that just might prove it
I appreciate the encouragement to really look closely and notice things
5:03 Seeing you overlooking the canyon gives a perfect perspective of the size of it. We can barely see you standing there.
WOW, what an ending! It's always bugged me how that part of the world got to be that way. Thanks Myron, can't wait till the next adventure : )
Hi Myron, Wyoming sure is a big state (I'm in Maryland, which is much smaller).
I would guess there is a lot of iron in that Breccia layer to explain the red coloration, which seems in concert with your findings.
Yes, I noticed that the Breccia layer seems continuous and not spotty the way I would expect Cenotes at be.
Karst is limestone swiss cheese! I live in a Karst landscape here in TX. Loved it as a kid.
As an aircraft engineer in The Netherlands this stuff is non of my business but i find your sharp eye on geologic clues of historic events in nature fascinating. I'm sold on your geo-video's.
cool!
What Myron highlights, with sea levels going up and down hundreds of feet over time due to natural changes in our climate, earth's crust and sun, is the crazy fear-mongering by uneducated influencers (looking at you, Al Gore) about man-made climate change that might move sea-level up/down by just a few inches. Our species need not panic, we just need to gradually adapt, as nature has adapted to such change over the millennia.
This is truly fascinating! Thank you for another excellent, easy to understand geology lesson, Myron :) I really enjoyed your explanation of how cenotes are formed. All the best from Brittany, western France.
The only sad part about this video is we will not be here to see the beauty imagined in another 5k to 1M years from now. Excellent episode, thanks for sharing.
New hat! Another great presentation.
Thank you again! The only problem is... I can't get enough! Want more and more of your videos! Love your channel!
Yay another video from Myron
10:32 There is an arc of cenotes in Yucatan, all originated 66 million years ago when the Chicxulub asteroid hit. They are a uniform arcing distance from the "point" of impact due to the shock waves of the impact where they stressed the pre-occurring limestone the most, created cracks, and then the cenotes grew by acidic erosion from there.
hmmm...didn't know that
This guy read the rocks like a book! I love deep time and to understand how it all happens. Thanks Dr Cook!
Thank you, Myron; I always look forward to your studies and vistas.
You will inspire so many to take to studying the wonders of our earth. Thank you!
I love and look foreword to these moments of being in a different world/time through your narration and video style.
Great job Myron 👏 - Amazing video.
What is the cement that binds the angular rock together in the Big Horns? I'm guessing Iron Oxide(?) but where did that come from?
the color come from iron oxide and is from overlying Amsden formation
5:17 That layer looks like it could be from a ice dam flood like the Missoula floods. That is the very first thing that I saw, but I'm not a geologist.🤷♂
Myron Cook, I would suggest that you explain what limestone is composed of. Most people would be amazed to learn about how much marine lifeforms died to form limestone. The sequestered carbon that is in just this video came from a high atmospheric carbon dioxide atmosphere. With the ocean being close to carbonic acid than the more basic it is now.
good idea!
Myron, wow... do you ever not just totally ROCK every video? Great again!
If we wait only a couple million years, there will be some valuable real estate in Florida.
This video just kepot me from total despair after a horrible two weeks. Geologic time is soothing.
Thank you very much, Myron, another lovely, interesting video. I was thinking of an underwater landslide, the red layer looks very turbulent. I would never thoght of karst, fascinating!
Dr. Cook, I should have added. I am aware of snow avalanches. For decades I skied the high and far. Skiing the top of yesterday's avalanche is terribly erose. Much like if a farmer had covered his fields in rounded granite boulders, you are skiing a rock garden. Snow sliding down a mountain trades potential energy for heat. The snow warms with the exact amount of energy in relation to the change in elevation. Often, rolling snow compacted slush balls when the slide comes to rest, and freezes rock hard in minutes or hours. And the surface looks exactly as erose as your cliff face layers.
Really liked working slowly thru the landscapes and the connections
Best channel on TH-cam!
Frank slide but under water as the slides surrounding the Hawaiian Islands. There are slides under water that slid for 100 miles.
Tonga area too, sunda arc too
Babe, wake up. Myron Cook just posted
Florida Man approves, he will become part of the Karst terrain
Very cool. To complete the story, it looks like the karst terrain was uplifted for a time and formed caves, which collapsed. Then it was submerged again, and buried under new layers of limestone. And then it was again covered with sedimentary rock ,before being uplifted again, and eroded into canyons.
better to say sea level changed...very similar to land uplifting
@@myroncook Cool to know. I guess that's a whole other video about how the ocean basins get more and less shallow, changing sea level in the process. But surely there was a bit of both, I mean, that location is very high up now.
Hey Myron, my favorite geologist! From your neighbor in the Bitterroot Valley, Montana.
What's another pearl gift !!! Thank you Myron.
One thing missing. The red iron stain wou.c not be seen in Florida as the clays have close to the lowest levels of iron in the world. So no red stains except if someone left a car or other human tech to rot.😊
Wonder what clays will be deposited 10 million years from now.
(Aren't those iron-oxide rich layers strictly a thing of the past though? I thought they only formed during the Precambrian when Earth first acquired substantial free oxygen.)
@alexhajnal107 the reason for the low iron was that there was no vulcanism that could provide the iron. The Atlantic could close up and create the volcanoes as the mountains wore down and mixed the white clay with the iron rich mud from the volcanoes,but that will take quite a while and might not even happen that way.. (with "a while"taking on a major burden)
Always fascinating! ❤❤
Carter Caves KY is a cool karst area with lots of collapsed caverns leaving cool arches in places. Wish I could drag you on a hike there!
I love this place!
Wow, I'm excited for Florida, can't wait! ___🌲___
Fascinating video, love the discussion of breccia’s. Your discussion of collapse features and subsequent breccia formation certainly helps with an outcrop in Gillespie County, Texas. We have these large limestone blocks with breccia cobbles and pebbles within it and the topography during the time of formation was flat, but there were karst features. I so appreciate your thinking and will revisit the outcrop tomorrow morning. (Also, the aquifer in Florida is the Floridan Aquifer, not Floridian. An frequent error, easily understood.) Many thanks Myron!!!
oops!
I always enjoy your videos.
So excited, thank you
Wonderful. Have you ever thought of doing some videos on Hells Canyon? I was part of a support team for a long distance, bicycle trip for a friend of mine who is doing a weeklong bicycle trip around the area of southern Oregon and south east Oregon, and I had no idea Hells Canyon was ever there!! For such a huge geological anomaly that is bigger in size in some ways than the Grand Canyon. Why are we not hearing more about this beautiful part of Oregon the Wallowa mountains are just stunning as well.
possibly
@ OK now I’m all excited
That was very interesting and perfectly presented. Thank you for sharing this with us.
Interesting presentation, don’t ask questions.