The same basic process occured along the southern margin of the of the North American craton between 2 and 1.6 Ba. But most of the evidence is buried under sediments plus multiple glaciations.
Totally psyched to see this!!! It has taken me a number of years to understand this process. I live right next to the ocean in California (San Francisco), so I have really wanted to understand why the geology here is SOOOOOO jumbled, and this helps. Thank you!!!!!
The proof is the rocks. Which you would know if you actually bothered to read anything ... Furthermore, prove it isn't. Anyone can say "proof," but you all never try to prove anything yourself. But, of course, that would require you actually reading. Smh. You don't even know how stupid you make yourself look.
I've been following the lectures being streamed by Professor Nick Zentner of Central Washington Unversity, entitled 'The Crazy Eocene- A to Z', which has been about the accretion of the Siletzia Terrane and all the effects that played out afterward during the Eocene. There was also some work on an earlier Terrane, Wrangelia, which accreted during the Cretaceous. The reason this was looked at was because 1) part of it was made from a Large Igneous Province, like Siletzia, and 2) it didn't accrete head on, but at an oblique angle, causing it 'dock an slice'. So I watched this video with interest...and whilst Wrangellia arrived and accreted in the right time frame, I was surprised to see no obvious sign of Siletzia, which accreted about 50mya! Are Nick Zenter's Crazy Eocene streams so cutting egde that what we're learning hasn't been accepted by the geological mainstream yet?
Remember, there are two basic schools, one where Siletzia was formed in place, and the other that it was Docked from forming outside of North America. This shows the Formed in place version where Siletzia just grows like the flood basalts of Eastern Washington did. And I don't see the Yellowstone Hotspot in this animation either, but appreciate the hard work that went into it.
@@twotone3471 Thankyou! As I'm not a student of Geology, the idea that Siletzia formed in place has passed me by. It's probably been mentioned, but I missed that bit, for one reason or another!!
@@carolynallisee2463 No problem! We are lucky that the vents for Nick's "German Chocolate Cake" Pacific Northwest flood basalts can be identified. Siletzia does not have that luxury. So much speculation there, but the dating of the rocks below Siletzia as being younger than Siletzia's basalt, is a long way towards proving that it formed out in the Pacific, then was brought in. The Appalachian mountains have a similar formation, where younger rocks lie under older ones due to a similar collision with Avalonia, whose rocks extend from the southern US, up through Canada's coast to England and Spain. North America has but a single Craton, the "Canadian Shield" of Ontario. Pretty much all the rest of the continent was grafted on, so chances are, there is a exotic Terrane story somewhere near you too, no matter where in North America you may live!
💝This is So My Christmas Gift!!!!! 🎁 WOW! It's simply Brilliant!!!! I have so many questions! Thank you! For all of this ~ Thank YOU!!!! Merry Christmas to you and to those that you love and care for.
This doesn't seem to show the development or accretion of the Siletzia or Yakutat terranes 50 Mya. These terranes developed as a large igneous province in the Pacific and then accreted to the coast from Northern California to the southern tip of Vancouver's Island as well as into southeast Alaska. That's sort of a big miss in this animation I would think.
.. . We have little evid of Siletzia movements at sea, was it to west, to southwest, formed right offshore, , , No paper is sure even if some animations do guess... Scotese maybe didn't want to guess and this is minor land area overall .
At Satélite images shows that about 1 Mya there were 2 peninsulas at California Nortern one Water Dried out between LA and San José. Also Salton sea was part of Cortés Gulf
wow, this video shows the formation and disappearance of the Western Interior seaway. Note that the Western Interior Seaway was completely gone by the end of the Cretaceous, a few million years before the asteroid impact. The accretion of terranes is ongoing, as Vancouver island is slowly docking with North America. The only subduction zone left on the West Coast of North America is the Cascadia subduction zone, which is rather small compared to some of the bigger ones, such as the one corresponding to the Peru-Chile trench, or the one corresponding to the Java trench. The one corresponding to the Japan trench is not a small one either. There is also one corresponding to the Aleutian islands that is fairly long. The Farallon plate subduction is mostly long gone although the Cascadia subduction zone is what's left of it. A lot of the terrane accretion onto North America is due to the subduction of the Farallon plate.
Yes. I live in the sf bay area which is basically all made up of the wreckage of the subduction of the Farallon plate, then Sliced up by the San Andreas zone.
A gal in San Mateo Co, CA says, "Kewl-l" I also like watching my coast line come and go. Be fun also, not demanding here, not at all, just saying it would be fun to see a vignette of Now and into the next 100 million years how California is going to roll. But I'm keen to know if we are predicting another inland ocean or three in the once-was the USA. Anyway, thanks! 1st time viewing.
I live in Southern California and would love to see what the future of California and the greater North American west coast will become. Will the Pacific plate at the San Andreas break off? Will the San Andreas shut down and the rift transfer to the Walker Lane running behind the High Sierras? Will all the adjacent faults in California break the land up into an island archipelago? How will the basin and range region look in 50 million years? Lol, I need answers!
Agreed, would love to know as well. Hopefully as computer simulations and theories increase in accuracy we will have a clue. Imo the west coast of California will appear very similar to the Korean Peninsula sticking out with several new bays. Seems possible the pacific may switch directiona again by then once the Juan de Fuca Farallon remnants off Mexico fully subducts.
Expanding earth theory explains the placement of all major land masses/continents around the planet as well as the mid-ocean ridges that stitch around the planet, accounting perfectly for everything we observe today and all sediment core sample data that has been collected. No other theory fits all of the pieces together as perfectly as Expanding Earth, so I've got to stick with that model.
If Wrangellia really got isolated from the rest of the world from 230mya until 110mya wouldnt there have been some early dinosaurs existed that migrated to it? if so wouldnt they have formed exotic new families or even new clades?
The terrane intrusions along western north America are as fascinating as they are complex. I love these vignettes Christopher. Thank you!
Definitely.
The same basic process occured along the southern margin of the of the North American craton between 2 and 1.6 Ba. But most of the evidence is buried under sediments plus multiple glaciations.
Totally psyched to see this!!!
It has taken me a number of years to understand this process. I live right next to the ocean in California (San Francisco), so I have really wanted to understand why the geology here is SOOOOOO jumbled, and this helps. Thank you!!!!!
yeah but normies haven't a clue about geographic reconstructions. this one is all wrong
@@plasmaastronaut proof?
The proof is the rocks.
Which you would know if you actually bothered to read anything ...
Furthermore, prove it isn't. Anyone can say "proof," but you all never try to prove anything yourself. But, of course, that would require you actually reading.
Smh. You don't even know how stupid you make yourself look.
I've been following the lectures being streamed by Professor Nick Zentner of Central Washington Unversity, entitled 'The Crazy Eocene- A to Z', which has been about the accretion of the Siletzia Terrane and all the effects that played out afterward during the Eocene.
There was also some work on an earlier Terrane, Wrangelia, which accreted during the Cretaceous. The reason this was looked at was because 1) part of it was made from a Large Igneous Province, like Siletzia, and 2) it didn't accrete head on, but at an oblique angle, causing it 'dock an slice'.
So I watched this video with interest...and whilst Wrangellia arrived and accreted in the right time frame, I was surprised to see no obvious sign of Siletzia, which accreted about 50mya! Are Nick Zenter's Crazy Eocene streams so cutting egde that what we're learning hasn't been accepted by the geological mainstream yet?
Remember, there are two basic schools, one where Siletzia was formed in place, and the other that it was Docked from forming outside of North America. This shows the Formed in place version where Siletzia just grows like the flood basalts of Eastern Washington did. And I don't see the Yellowstone Hotspot in this animation either, but appreciate the hard work that went into it.
Wow! Appreciate the simulation for its mind blowing big picture of the history of the earth.
@@twotone3471 Thankyou! As I'm not a student of Geology, the idea that Siletzia formed in place has passed me by. It's probably been mentioned, but I missed that bit, for one reason or another!!
@@carolynallisee2463 No problem! We are lucky that the vents for Nick's "German Chocolate Cake" Pacific Northwest flood basalts can be identified. Siletzia does not have that luxury. So much speculation there, but the dating of the rocks below Siletzia as being younger than Siletzia's basalt, is a long way towards proving that it formed out in the Pacific, then was brought in. The Appalachian mountains have a similar formation, where younger rocks lie under older ones due to a similar collision with Avalonia, whose rocks extend from the southern US, up through Canada's coast to England and Spain. North America has but a single Craton, the "Canadian Shield" of Ontario. Pretty much all the rest of the continent was grafted on, so chances are, there is a exotic Terrane story somewhere near you too, no matter where in North America you may live!
I had the same reaction as you, as a fellow fan of Nick!! I was watching for silencia to grow and was surprised to not see it offshore!
Wonderful Terrane formation!!! Wow, thanks a lot to watch the animation.
I have been waiting for this, amazing work, it adds to my geological understanding of the area I live in.
💝This is So My Christmas Gift!!!!! 🎁
WOW! It's simply Brilliant!!!!
I have so many questions!
Thank you!
For all of this ~ Thank YOU!!!!
Merry Christmas to you and to those that you love and care for.
This doesn't seem to show the development or accretion of the Siletzia or Yakutat terranes 50 Mya. These terranes developed as a large igneous province in the Pacific and then accreted to the coast from Northern California to the southern tip of Vancouver's Island as well as into southeast Alaska. That's sort of a big miss in this animation I would think.
.. . We have little evid of Siletzia movements at sea, was it to west, to southwest, formed right offshore, , , No paper is sure even if some animations do guess... Scotese maybe didn't want to guess and this is minor land area overall
.
I want to read up on this. Sounds fascinating.
At Satélite images shows that about 1 Mya there were 2 peninsulas at California Nortern one Water Dried out between LA and San José. Also Salton sea was part of Cortés Gulf
I love you. I mean, I love this!
wow, this video shows the formation and disappearance of the Western Interior seaway. Note that the Western Interior Seaway was completely gone by the end of the Cretaceous, a few million years before the asteroid impact. The accretion of terranes is ongoing, as Vancouver island is slowly docking with North America. The only subduction zone left on the West Coast of North America is the Cascadia subduction zone, which is rather small compared to some of the bigger ones, such as the one corresponding to the Peru-Chile trench, or the one corresponding to the Java trench. The one corresponding to the Japan trench is not a small one either. There is also one corresponding to the Aleutian islands that is fairly long. The Farallon plate subduction is mostly long gone although the Cascadia subduction zone is what's left of it. A lot of the terrane accretion onto North America is due to the subduction of the Farallon plate.
Insightful comment!
Yes.
I live in the sf bay area which is basically all made up of the wreckage of the subduction of the Farallon plate, then Sliced up by the San Andreas zone.
A gal in San Mateo Co, CA says, "Kewl-l" I also like watching my coast line come and go. Be fun also, not demanding here, not at all, just saying it would be fun to see a vignette of Now and into the next 100 million years how California is going to roll. But I'm keen to know if we are predicting another inland ocean or three in the once-was the USA. Anyway, thanks! 1st time viewing.
I live in Southern California and would love to see what the future of California and the greater North American west coast will become. Will the Pacific plate at the San Andreas break off? Will the San Andreas shut down and the rift transfer to the Walker Lane running behind the High Sierras? Will all the adjacent faults in California break the land up into an island archipelago? How will the basin and range region look in 50 million years?
Lol, I need answers!
Agreed, would love to know as well. Hopefully as computer simulations and theories increase in accuracy we will have a clue. Imo the west coast of California will appear very similar to the Korean Peninsula sticking out with several new bays. Seems possible the pacific may switch directiona again by then once the Juan de Fuca Farallon remnants off Mexico fully subducts.
Sometimes I wish I could live for 100 million years to see it all lol ...
Very interesting. Thank You.
Is there a name for that large island in the middle that collided with Alaska between 0:00 and 1:10
Expanding earth theory explains the placement of all major land masses/continents around the planet as well as the mid-ocean ridges that stitch around the planet, accounting perfectly for everything we observe today and all sediment core sample data that has been collected. No other theory fits all of the pieces together as perfectly as Expanding Earth, so I've got to stick with that model.
No...
@@TheSpaceEnthusiast-vl6wx
Yes..., but damn good argument you make.
epic
Are you inferring that siletzia was formed near shore as a large igneous province?
Western Laurasia moved west thousands of miles along EONS
If Wrangellia really got isolated from the rest of the world from 230mya until 110mya wouldnt there have been some early dinosaurs existed that migrated to it? if so wouldnt they have formed exotic new families or even new clades?
Chicxulub is visible. :)
Really? What is that dot?
@@mitchjohnson4714 at 1:43 look the Yukatan peninsula.
@@fredaves268 Yeah, I see it, but I thought it was a little closer to the land.
Hol’ up wait a minute, where are the great lakes
they are much younger...
The Great Lakes only formed during the last ice age, less than a million years ago, an too recent to show upon this vingnette.
😁 I was looking for them, Too!
@@macking104 💝 Thank you.
@@dantolson1697 💝 Thank you!
80 million year north America better watch out lol
❤️🌈❤️🌈❤️🌈❤️🌈
I thought this was from 2013 bruh
Chris Scotese will NOT reply to this comment
Correct
I think
Seems kinda disrespectful ...
@@melodiefrances3898 no it is a joke lol
Ho
Fixists!