You know what's crazy? If you try lightly googling into any of the subjects covered in this Eocene or any of the material with the guests, there's almost nothing out there - that's how current these lectures are. And if you do find something, well you sorta need to be a geologist to understand it all the terminology and you don't have a Nick/guest to piece it altogether! Having experts break down what they themselves are currently learning is just special. Amazing stuff, simply no other corner of the internet like it.
5 months ago I have little or no Knowledge of Geology. I am a baby here .A whole new world has been opened up to me. Thank you so much Nick. I am 64 .One is never to old to learn . soooo John from Menominee ,again thanks you for doing this.I have memory issues and doing this has help me tremendously ,again thank you .
@@SCW1060 THANKS, JUST CONSIDER IT AS PART OF DOING MY CIVIC DUTIES. IT WAS TEN YEARS AGO, , I AGREE I AM DOING VERY WELL. I WAS AMAZED HOW MY CAPS HELPED. TBI WAS HARDER AT FIRST. I GOT ALMOST NO MEDICAL CARE. KIND I DID GET, I DIDN'T LIKE OR GIVE THEM PERMISSION. NOW IT ACTUALLY IS MORE PAINFUL AS MY BRAIN MAKES NEW CONNECTIONS. KIND OF STRANGE BEING A CITIZEN SCIENTIST LEARNING FROM MYSELF BY LIVING IT & FEELING IT HAPPEN. GOT TO LOVE IT. JUST KEEP TRUCKIN' ON. I HAVE FACED HEAD ON MY CHALLENGES IN MY LIFE. WHICH PROVIDE ME OPPORTUNITIES, TO MAKE A DIFFERENCE.
What a AWESOME series Nick. I really like you having a guest geologist on every episode And you do great setting up your guests as well, keep that the same way for all of your A to Z series if you can
Thank you Nick. As a fellow scientist, I really appreciate your words about the lack of a work “demarcation”. We live in an amazing society that allow us dreamers to dream.
1:51:31 beautifully said 👏 I think many of us feel that passion from you and your guests and is a big reason why this learning is so enjoyable. Thank you. ❤
Such an amazing channel! A couple things. 1. Thank you Nick for all the effort and time you put into making these and for being willing to share your knowledge with your community, a community you probably will never meet in person. 2. Thank you to all the guests for their tremendous generosity with their time and knowledge. We would never get to hear and learn the content from them without their generosity and they also are sharing with complete strangers. In addition to sharing with everyone, I've noticed something here and that is through this channel and the participation, it seems you are bringing experts together from time to time that very possibly wouldn't have known each other or been in contact with each other. That may give rise to a much high level of professional communication and collaboration in the geologic community and I can't ever see that being anything other than positive. We are so blessed to have this available to us free of charge and in the comfort of our own homes.
Nick, where did the time go! Z already? It was only yesterday that we started this journey through the Crazy Eocene, you gotta love Basil’s brutally honest presentation of his theory, even though it contradicted some of yours. That’s what makes you even more credible. Bring on the Z !
What a thriller! Amazing to see these pro geologists so excited to take their acts on the road. They have seen the enthusiasm of your fans and love sharing their knowledge with us! Thanks big time!!!
Late to the session, but had a school, one of my customers before I retired, that had a issue at the school and did not trust anyone else to straighten it out. Feels good to be trusted, like we do Nick to give us the information on Exotic / Eocene areas we all wish we could see or understand! Its amazing how much I pay attention to highway cuts I drive through now. Even look for folds or inclines in the rocks. I started watching a long time ago, to Nicks broadcast in the gym to groups of townies. Amazing how one person can make you appreciate geology. Thank you Nick!!
Perfect timing in the series bringing Basil in, with just enough information learned through the whole series he is able to stitch a narrative between the whole enchilada. Just fricking amazing. And yes, like you say Nick, how so many comments say they need to watch this episode a few times because there are so many moving parts. Yeah, definitely going to have to watch this again. And maybe again after that. What a treat having Basil be apart of your series. Big picture kind of thinking to tie in all the specialists you bring in on the series. Bravo.
1:25:42 Dr. Tikoff, Woh! the lower diagram seems to show northward subduction or slab roll back. The tomography should resolve that. does it? It seems to me your two mica granites are due to slab breakoff after the Insular Superterrane collides. It was a diachronous collision along strike. The southward sweep of magmatism and exhumation of core complexes shows the the IST hit in the north first. Thank you so much for returning to Nick's live stream, Basil. Nick, your guests are fantastic! The text scroll shows that you are constantly attracting novices who are instantly enthralled, like we are. Amazing.
When I took my trip to the PNW last Sept., I didn't think much about what was between home and Wenatchee as far as geology goes. But the Blue Mountains grabbed my attention as I drove through them. It's a spectacular drive! Later, I noticed on the USGS earthquake terrain map, that the Blue Mts. had an odd shape. It reminded me of a hurricane. At first, I thought it was associated with the clockwise rotation, since it is so close to Pendleton, OR. But I thought it had to be larger and older than that, since the rotation is smallest at the center or pivot point, and larger at the coast. Anyway, Basil confirmed my suspicion in Episode Y of The Crazy Eocene, when it talked about the rotation of the Blue Mts. I just knew there was some kind of rotation, because of their shape. Thank you Basil!
Wow this was just amazing, Thank you Dr Basil Tikoff, what you shared helped us see the possibilities of the moving and spreading and accreations and how tetonic plates affect our area. Both of you are passionate about geology and it shows. YOu are like fine artists discovering a beautiful painting under a burnt surface and its just fascinating. Thank you both thank you to everyone who has been in these discussions, its amazing this planet of ours.
Thank you so much Nick for helping all of us understand the ground we walking on and how it came to be where it is and how it is. It has kept me company while I am recovering in the hospital. (I should say kept me from going completely crazy while I take an unscheduled break from my studies while my broken body heals.) Also would like to thank you for helping me understand how the geology of the pacific coastline affects where and how my study subjects. Would still like to understand mor on how and why some of that German chocolate cake ends up 45 degrees end on in the pacific coast to how in enters. It is one of the weirdest I’ve seen and no one seems to have the answer. Maybe some time you can give a show on just the coastal geology.
Gosh, another great presentation. Basil fills in so many details. I scarcely digest one concept when he brings up another and another in rapid succession. I’ll be watching this again as well. I agree. It’s fascinating. That’s what keeps us glued to our seats.
Thank you Nick. This was such a great one. Basil is a very special person , isn’t he? He was so eager to answer the questions on the live chat. What a cool guy !! 😊
Top quality as always. Still need to have you visit me at the Black Diamond Historical Society or the White River Musuem and the Green River Gorge. Have a lot of great stories to share.
At shows end, you asked whether other professions comingle "work subject matter" with "living". I think it is a function of how passionate you are about what you do. I've been a civil engineer for 46 years and started out at UC Davis writing my own major because I loved civil engineering and structural geology. I am blessed in that I love what I do and now spend much of my time mentoring and teaching younger engineers how to "see" the project, "see" the challenges. It's not a math or formula thing - you have to take ownership of your work - believe in yourself and genuinely want to make a difference for the better. My mantra to my engineers is: Learn something new EVERY DAY or you are not doing it right. Learn from others - exploit their strengths, never put people is a position to fail - buid their foundations while you hone your own. Geology is a passion to me, unfortunately not my profession, but I can live and dream my geology heritage through you, Jerome, Basil, Erin, and others. I am profoundly grateful to you and your series - your passion to learn, understand and share. Oh, and I still have my rock cores I drilled out in the coastal range of northern california in 1979 where my paper was to identify when the coastal range was remagnetized due to Ts&Ps. Humping that portable drill and diamond bit up into the heights in the backcountry to collect cores of these steeply inclined shale/siltstone bedding layers and then analyzing them... some of the best memories i carry with me today. We used to chant... "Geology Rocks!!!" Bless you Nick.
I'm sure glad that I enjoy just watching these presentations, cuz I gotta say my brain is fried from all this info, no way I could pass if I was given a test hahahaa!
Throughout this series I've thought upon the subducting spreading ridge related to Siletzia, and done a mental comparison with the subducting spreading ridges around Galapagos. Looking at the bathy topo maps, it never did seem like there was nearly as much mass as we were thinking existed at Siletzia. Basil's idea makes sense in that regard. How comparable are the Galapagos versus Siletzia in scale and otherwise?
Well done! Even I understood the subject matter as it was presented and I am no sort of academic type. Just a regular joe that finds this extremely interesting.
Could the 'window' be the cause of the clockwise rotation? Like a hole causes the drain water to rotate? Question for next year. Could the 'tear' be why the Cascadia subduction zone is stuck?
@1:03:00 Since the JDF spreading ridge is subducting off BC, due South of the Queen Charlotte Fault, what is the difference between this lack of "blow torch" effects there, and the proposed effects of the Eocene Siletz-Yakutat spreading ridge?
Basil, @35:16 Why do you have the plate vector arrows pointing obliquely away from the spreading ridge, yet use 90 deg. divergent orientation for the Transform Faults and the Siletz LIP? Why does your model require an ENE oriented Farallon spreading ridge? Do you have evidence of reorienting spreading ridges? The JDF-Farallon SR’s present orientation is NNE. What is the driving mechanism for your NE plate vector? It appears that your model isn’t accounting for the NW rotation and Cali Terrane transport, which would double the length of the Columbia Embayment, and not require the reoriented Farallon SR.
Is there a model that can show the Siletz-Yakutat Terrane separation via a subduction - strike-slip - NA drift triple junction? I can imagine a subducting JDF, and off-set Yakutat to its NW being being separated by transtensional shear, then the Yakutat rafted away from the JDF along a strike-slip.
Did I miss it? I've watched Basil's interview 2 times now. I don't really see him explaining how the extension happened. Instead he showed maps that compared the L C fault to the ocean extensional faults and talked about how it reversed directions. So what caused the L C fault is what I'm thinking. It's not caused by a spreading ridge on the continent is it as the continent rifts? I'm so confused.
So I have been thinking if there is this large scale reshuffling of the Pacific nd possibly beyond and given the timing could this readjustment be connected in any way to the large Igneous Province activity of 56 Ma? After all there generally isn't a understanding of why Plume heads appear when they do with a few exceptions so could the release of plume heads such as Siletzia and the Yellowstone plume and the North Atlantic Large Igneous Province and the Icelandic plume possibly have been part of the readjustment after all if as the Glasner2022 paper suggests these structures we call plates extend on gradients deep into the mantle could the plume heads which seemingly occur at the same time be an effect of the ongoing readjustment squeezing the interior of the planet with the mantle plume heads being released to counterbalance movements elsewhere? That could in some way explain why the Icelandic Plume has a much older continuation beyond the supposed head tracing back to the Mesozoic and potentially older with some models and also the onset of the Formation and accretion of Siletzia and its other half shifted north. If such a picture is true plumes within the Earth might be a way of clearing space within the mantle by the release of more mobile hot gooey material that lies at the core mantle boundary. Both plumes were relatively antipodal from where subduction stopped if my brain's attempt at reconstructing the Earth of that time is somewhat accurate which is why I'm wondering if there might be some connection. The state of the Earth during a window of tectonic reshuffling might involve lots of little give or take motions across the planet resolving at several timescales and in this case potentially triggering the Paleocene Eocene Thermal Maximum and who knows what else as the Planet shifts snapping into a new tectonic phase. My brain is still trying to think about the possibilities and their potential implications but thank you and your guests for posting this free online!
Where else can you talk about the “Emperor-Hawaiian Pacific Plate Shift,” Columbia Embayment, The OWL, and the cursed German Chocolate Cake all in one fell swoop? I almost asked about the KBML’s ties with the LCL, but I thought that would’ve been over the top.😄
Ding ding ding, 3rd replay wrinkle, always in search of clues to my region.... Yes the Phillipine Plate at 45m rotated 45 degrees and traveled north.... a little nugget from this discussion. I am imagining a subduction arc being subjected to that much movement. The plate left a hot spot (perhaps a triple junction at one taime) behind that continued to spew lava to the south and all those massive below sea mounts. And the volcanism that formed the arc is between 33.9 and 56m years ago. This is old information on the age bracket given that subduction volcanos only last 2m years, present day. Will be watching yet again.
After watching for the 2nd time (I'm going to watch it again,) @1:08:45 is making me hyperventilate again, let me grab my paper bag...because science is coming close to the enchilada I’ve been cooking. Offsets in the middle of NA? Offset MCC’s? Basil using the MOR as his prime example? The Mantle is the mechanism for it all- Where there are offsets, there are/were upwelling spreading centers that remain/ed active under the over-riding Craton for millions of years. Hello B&R!
@1:08:30 IM (not so) HO, here's the "Ahah!" moment for some of you, and validation of what I fundamentally know, that oceanic spreading ridge divergent centers may be obliterated through subduction, but its "parental" upper mantle upwelling continues for tens of millions of years after it's over-ridden by continental drift AND continues with its divergent influence to the plate above it, no matter if it's Oceanic or Continental. This province Basil's focusing on is the Eocene margin of a subducted Oceanic plate which was East of the Farallon and West of NA, but it was "bulldozed" by NA from a location further East.
1. When Siletzia hits if breaks the conveyer belt of subducting ocean crust that is under all of WA, even if not directly rubbing it likely sets up some eastward compression on WA and ID. So Siletzia cut east force and thus we get extension. And by jumping trench we move the prime compression 200km away so net we get less in mid WA.. 2. As idea, isnt clockwise rotation, the rotation comes MAINLY from having thick east side and thin west side, which comes from taking 10km sediment from mainland craton 100km thicker. The tapering of WA and OR the more west one goes is cause of Rotation???? Cali presses north and thinner west OR smushes more hence rotation. Eventually the ridges will curve into crooked smiles??? 3. Siletzia is just ocean crust. Not a new thing. A bit of light o crust SLOWING and joining a mainland is Not a new force, it is reducing the force via subduction. Due to slab break. And jump. This subduction force is massive, made rockies, compressed WA and ID. Siletzia for 10 million years cut this pressure, till subduction 200km west resumed and recompressed land from 40ma to 30ma. From 50ma to 40ma less compression allowed CHEMISTRY to liquify new bunches of rock. Plus new eddies occured at break. Plus heat came thru slab break under ID. Siletzia the island was Not the big cause of stuff after 50ma.. MAYBE???
Looked up the size of Siletzia. According to what was estimated, it was 10,000 cubic miles. About 3000 feet high. And about equal to a large "German chocolate cake ". I could not find a metric of the volume of Wrangellia, but this video shows Wrangellia much more massive vs Siletzia ruclips.net/video/2yKNhbY3Nbk/видео.html
THANKS FOR A GREAT CLASS. GOT TO LOVE YOU ALL GREAT CLASS TODAY. WOW. WE ARE ALL TOGETHER DOING CRAZY EOCENE Z. WHAT NEXT???? MAYBE JUST MAYBE WE MIGHT BE ABLE TO HELP OUR PROFESSOR NICK'S ADVENTURES. JUST ASK US PLEASE? FOUND OUT BIG BLACK SUGAR ANTS LIKE BANANAS. FUNNY, WEIRD, THEY ALL LEFT AT END OF GEOLOGY CLASS. GO FIGURE. REAL TIME ENTERTAINMENT. ROCK STOMPING BIG ANTS ON LIVE. LOL.
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
You know what's crazy? If you try lightly googling into any of the subjects covered in this Eocene or any of the material with the guests, there's almost nothing out there - that's how current these lectures are. And if you do find something, well you sorta need to be a geologist to understand it all the terminology and you don't have a Nick/guest to piece it altogether! Having experts break down what they themselves are currently learning is just special. Amazing stuff, simply no other corner of the internet like it.
HIGH BAR TOP EDUCATIONAL WORKSHOPS.
Thank you for this very nice comment.
So true, this is like discovering Spiderman could not get his ropes from a spider bite! It means the Wild Wild West really is WILD!!
@@GeologyNick Thanks for the great content Nick; you've made me want to go back to school to learn and see more!
5 months ago I have little or no Knowledge of Geology. I am a baby here .A whole new world has been opened up to me. Thank you so much Nick. I am 64 .One is never to old to learn . soooo John from Menominee ,again thanks you for doing this.I have memory issues and doing this has help me tremendously ,again thank you .
WELCOME MENOMINEE INDIAN TRIBE OF WISCONSIN. I HAVE A TBI, TRAUMATIC BRAIN INJURY, SO I HAVE CHALLENGES TOO. CAPS ARE HELPING ME A LOT..
@@cyndikarp3368 MY GRANDSON HAD A TBI ALSO AND I WAS HIS CAREGIVER SO I THINK THAT YOUR DOING VERY WELL AND KEEP IT UP 👍
@@SCW1060 THANKS, JUST CONSIDER IT AS PART OF DOING MY CIVIC DUTIES. IT WAS TEN YEARS AGO, , I AGREE I AM DOING VERY WELL. I WAS AMAZED HOW MY CAPS HELPED. TBI WAS HARDER AT FIRST. I GOT ALMOST NO MEDICAL CARE. KIND I DID GET, I DIDN'T LIKE OR GIVE THEM PERMISSION.
NOW IT ACTUALLY IS MORE PAINFUL AS MY BRAIN MAKES NEW CONNECTIONS. KIND OF STRANGE BEING A CITIZEN SCIENTIST LEARNING FROM MYSELF BY LIVING IT & FEELING IT HAPPEN.
GOT TO LOVE IT. JUST KEEP TRUCKIN' ON. I HAVE FACED HEAD ON MY CHALLENGES IN MY LIFE. WHICH PROVIDE ME OPPORTUNITIES, TO MAKE A DIFFERENCE.
What a AWESOME series Nick. I really like you having a guest geologist on every episode
And you do great setting up your guests as well, keep that the same way for all of your A to Z series if you can
Thank you Nick. As a fellow scientist, I really appreciate your words about the lack of a work “demarcation”. We live in an amazing society that allow us dreamers to dream.
1:51:31 beautifully said 👏
I think many of us feel that passion from you and your guests and is a big reason why this learning is so enjoyable. Thank you. ❤
Such an amazing channel! A couple things. 1. Thank you Nick for all the effort and time you put into making these and for being willing to share your knowledge with your community, a community you probably will never meet in person. 2. Thank you to all the guests for their tremendous generosity with their time and knowledge. We would never get to hear and learn the content from them without their generosity and they also are sharing with complete strangers. In addition to sharing with everyone, I've noticed something here and that is through this channel and the participation, it seems you are bringing experts together from time to time that very possibly wouldn't have known each other or been in contact with each other. That may give rise to a much high level of professional communication and collaboration in the geologic community and I can't ever see that being anything other than positive. We are so blessed to have this available to us free of charge and in the comfort of our own homes.
Thank you for the very nice comment, Craig.
Nick, where did the time go! Z already? It was only yesterday that we started this journey through the Crazy Eocene, you gotta love Basil’s brutally honest presentation of his theory, even though it contradicted some of yours. That’s what makes you even more credible.
Bring on the Z !
Confusion is Growth!
Thank you, Basil and Nick - fascinating!!!!
Great content and great instructor. Leave no senior citizen behind.
Wonderful! as always! So sad that this is almost done and yet so excited for you to bring us more when you get out. Reruns are always a good fill. :)
I AM GOING TO START OVER AT GEOLOGY 101 & MOVE FORWARD GOT TO LOVE IT.
What a thriller! Amazing to see these pro geologists so excited to take their acts on the road. They have seen the enthusiasm of your fans and love sharing their knowledge with us! Thanks big time!!!
ABSOLUTELY. TRUE LIKE IN A GEOLOGY WORKSHOP EVERY LIVE RUclips.
Late to the session, but had a school, one of my customers before I retired, that had a issue at the school and did not trust anyone else to straighten it out. Feels good to be trusted, like we do Nick to give us the information on Exotic / Eocene areas we all wish we could see or understand!
Its amazing how much I pay attention to highway cuts I drive through now. Even look for folds or inclines in the rocks. I started watching a long time ago, to Nicks broadcast in the gym to groups of townies. Amazing how one person can make you appreciate geology. Thank you Nick!!
Thanks for all these great lures. I am an addict to your fabulous programs.
I really do think you guys are getting to the actual bottom of these geologic mysteries! Great job putting all of this data together!
Perfect timing in the series bringing Basil in, with just enough information learned through the whole series he is able to stitch a narrative between the whole enchilada. Just fricking amazing. And yes, like you say Nick, how so many comments say they need to watch this episode a few times because there are so many moving parts. Yeah, definitely going to have to watch this again. And maybe again after that. What a treat having Basil be apart of your series. Big picture kind of thinking to tie in all the specialists you bring in on the series. Bravo.
1:25:42 Dr. Tikoff, Woh! the lower diagram seems to show northward subduction or slab roll back. The tomography should resolve that. does it? It seems to me your two mica granites are due to slab breakoff after the Insular Superterrane collides. It was a diachronous collision along strike. The southward sweep of magmatism and exhumation of core complexes shows the the IST hit in the north first. Thank you so much for returning to Nick's live stream, Basil. Nick, your guests are fantastic! The text scroll shows that you are constantly attracting novices who are instantly enthralled, like we are. Amazing.
Great class with Basil. My brain feels like it's going through crustal compressions and extensions. 🙂 Thanks again Nick!
GOOD FOR MY BRAIN EDUCATIONAL EXERCISE.
When I took my trip to the PNW last Sept., I didn't think much about what was between home and Wenatchee as far as geology goes. But the Blue Mountains grabbed my attention as I drove through them. It's a spectacular drive!
Later, I noticed on the USGS earthquake terrain map, that the Blue Mts. had an odd shape. It reminded me of a hurricane. At first, I thought it was associated with the clockwise rotation, since it is so close to Pendleton, OR. But I thought it had to be larger and older than that, since the rotation is smallest at the center or pivot point, and larger at the coast.
Anyway, Basil confirmed my suspicion in Episode Y of The Crazy Eocene, when it talked about the rotation of the Blue Mts. I just knew there was some kind of rotation, because of their shape. Thank you Basil!
Wow this was just amazing, Thank you Dr Basil Tikoff, what you shared helped us see the possibilities of the moving and spreading and accreations and how tetonic plates affect our area. Both of you are passionate about geology and it shows. YOu are like fine artists discovering a beautiful painting under a burnt surface and its just fascinating. Thank you both thank you to everyone who has been in these discussions, its amazing this planet of ours.
Thank you so much Nick for helping all of us understand the ground we walking on and how it came to be where it is and how it is. It has kept me company while I am recovering in the hospital. (I should say kept me from going completely crazy while I take an unscheduled break from my studies while my broken body heals.)
Also would like to thank you for helping me understand how the geology of the pacific coastline affects where and how my study subjects. Would still like to understand mor on how and why some of that German chocolate cake ends up 45 degrees end on in the pacific coast to how in enters. It is one of the weirdest I’ve seen and no one seems to have the answer. Maybe some time you can give a show on just the coastal geology.
Scroll through Nick's video list because he did a video on it or 2
As always a fun ride through geologic ancient history!
Thank you Nick and Basil
Gosh, another great presentation. Basil fills in so many details. I scarcely digest one concept when he brings up another and another in rapid succession.
I’ll be watching this again as well. I agree. It’s fascinating. That’s what keeps us glued to our seats.
Thank you Nick. This was such a great one. Basil is a very special person , isn’t he? He was so eager to answer the questions on the live chat. What a cool guy !! 😊
Thank you - and your guests! - for providing these fascinating presentations and discussions. Great stuff. Love it.
Just tuned in and already hit the like button even though just started. I know I'm going to like this episode.
Top quality as always. Still need to have you visit me at the Black Diamond Historical Society or the White River Musuem and the Green River Gorge. Have a lot of great stories to share.
At shows end, you asked whether other professions comingle "work subject matter" with "living". I think it is a function of how passionate you are about what you do. I've been a civil engineer for 46 years and started out at UC Davis writing my own major because I loved civil engineering and structural geology. I am blessed in that I love what I do and now spend much of my time mentoring and teaching younger engineers how to "see" the project, "see" the challenges. It's not a math or formula thing - you have to take ownership of your work - believe in yourself and genuinely want to make a difference for the better. My mantra to my engineers is: Learn something new EVERY DAY or you are not doing it right. Learn from others - exploit their strengths, never put people is a position to fail - buid their foundations while you hone your own. Geology is a passion to me, unfortunately not my profession, but I can live and dream my geology heritage through you, Jerome, Basil, Erin, and others. I am profoundly grateful to you and your series - your passion to learn, understand and share. Oh, and I still have my rock cores I drilled out in the coastal range of northern california in 1979 where my paper was to identify when the coastal range was remagnetized due to Ts&Ps. Humping that portable drill and diamond bit up into the heights in the backcountry to collect cores of these steeply inclined shale/siltstone bedding layers and then analyzing them... some of the best memories i carry with me today. We used to chant... "Geology Rocks!!!" Bless you Nick.
I'm sure glad that I enjoy just watching these presentations, cuz I gotta say my brain is fried from all this info, no way I could pass if I was given a test hahahaa!
Mary from woodland WA my very first live but I have been with you before COVID.
Basil is very knowledgeable on Eocene/Crutatious geological times. He should be part of the Dream Team! Thanks Nick! 🪨😎
Throughout this series I've thought upon the subducting spreading ridge related to Siletzia, and done a mental comparison with the subducting spreading ridges around Galapagos. Looking at the bathy topo maps, it never did seem like there was nearly as much mass as we were thinking existed at Siletzia. Basil's idea makes sense in that regard. How comparable are the Galapagos versus Siletzia in scale and otherwise?
Thank you-- I feel like my geology classes are staying fresh.
Wow! That was even better than I thought it would be.
Well done! Even I understood the subject matter as it was presented and I am no sort of academic type. Just a regular joe that finds this extremely interesting.
Just here cramming for the final.😁
Look forward to watching Dream Team Saturday show.😊🍞🍩☕
Could the 'window' be the cause of the clockwise rotation? Like a hole causes the drain water to rotate? Question for next year. Could the 'tear' be why the Cascadia subduction zone is stuck?
Good day,
On the green board 'Exotic Y'? Should that have been Eocene Y?
I noticed that with 5 minutes to go to finish,,,,
Tony
@1:03:00 Since the JDF spreading ridge is subducting off BC, due South of the Queen Charlotte Fault, what is the difference between this lack of "blow torch" effects there, and the proposed effects of the Eocene Siletz-Yakutat spreading ridge?
Gumby and Pokey were regulars on Captain Kangaroo
Basil,
@35:16 Why do you have the plate vector arrows pointing obliquely away from the spreading ridge, yet use 90 deg. divergent orientation for the Transform Faults and the Siletz LIP?
Why does your model require an ENE oriented Farallon spreading ridge? Do you have evidence of reorienting spreading ridges? The JDF-Farallon SR’s present orientation is NNE.
What is the driving mechanism for your NE plate vector?
It appears that your model isn’t accounting for the NW rotation and Cali Terrane transport, which would double the length of the Columbia Embayment, and not require the reoriented Farallon SR.
So the “unit” slides southward because of the western edge of the NA craton?
Where is the edge of the craton at this time?
There must be an eye in this hurricane, right? Maybe that's the NE Oregon Blues?
Is there a model that can show the Siletz-Yakutat Terrane separation via a subduction - strike-slip - NA drift triple junction? I can imagine a subducting JDF, and off-set Yakutat to its NW being being separated by transtensional shear, then the Yakutat rafted away from the JDF along a strike-slip.
I was wondering when clockwise rotation would be applied to Idaho
Did I miss it? I've watched Basil's interview 2 times now. I don't really see him explaining how the extension happened. Instead he showed maps that compared the L C fault to the ocean extensional faults and talked about how it reversed directions. So what caused the L C fault is what I'm thinking. It's not caused by a spreading ridge on the continent is it as the continent rifts? I'm so confused.
So I have been thinking if there is this large scale reshuffling of the Pacific nd possibly beyond and given the timing could this readjustment be connected in any way to the large Igneous Province activity of 56 Ma?
After all there generally isn't a understanding of why Plume heads appear when they do with a few exceptions so could the release of plume heads such as Siletzia and the Yellowstone plume and the North Atlantic Large Igneous Province and the Icelandic plume possibly have been part of the readjustment after all if as the Glasner2022 paper suggests these structures we call plates extend on gradients deep into the mantle could the plume heads which seemingly occur at the same time be an effect of the ongoing readjustment squeezing the interior of the planet with the mantle plume heads being released to counterbalance movements elsewhere?
That could in some way explain why the Icelandic Plume has a much older continuation beyond the supposed head tracing back to the Mesozoic and potentially older with some models and also the onset of the Formation and accretion of Siletzia and its other half shifted north.
If such a picture is true plumes within the Earth might be a way of clearing space within the mantle by the release of more mobile hot gooey material that lies at the core mantle boundary.
Both plumes were relatively antipodal from where subduction stopped if my brain's attempt at reconstructing the Earth of that time is somewhat accurate which is why I'm wondering if there might be some connection. The state of the Earth during a window of tectonic reshuffling might involve lots of little give or take motions across the planet resolving at several timescales and in this case potentially triggering the Paleocene Eocene Thermal Maximum and who knows what else as the Planet shifts snapping into a new tectonic phase.
My brain is still trying to think about the possibilities and their potential implications but thank you and your guests for posting this free online!
Where else can you talk about the “Emperor-Hawaiian Pacific Plate Shift,” Columbia Embayment, The OWL, and the cursed German Chocolate Cake all in one fell swoop? I almost asked about the KBML’s ties with the LCL, but I thought that would’ve been over the top.😄
One question. Could Extension and Crustal Thinning lead to a rifting situation as currently going on in East Africa?
Ding ding ding, 3rd replay wrinkle, always in search of clues to my region.... Yes the Phillipine Plate at 45m rotated 45 degrees and traveled north.... a little nugget from this discussion. I am imagining a subduction arc being subjected to that much movement. The plate left a hot spot (perhaps a triple junction at one taime) behind that continued to spew lava to the south and all those massive below sea mounts. And the volcanism that formed the arc is between 33.9 and 56m years ago. This is old information on the age bracket given that subduction volcanos only last 2m years, present day. Will be watching yet again.
Mmmmm. Gumby and Pokey coffee sediment! 😂 LOL
Much information that i didn t understand 🤯...have to see again🤔
Hello from Coventry. G B😍
After watching for the 2nd time (I'm going to watch it again,) @1:08:45 is making me hyperventilate again, let me grab my paper bag...because science is coming close to the enchilada I’ve been cooking.
Offsets in the middle of NA?
Offset MCC’s?
Basil using the MOR as his prime example?
The Mantle is the mechanism for it all- Where there are offsets, there are/were upwelling spreading centers that remain/ed active under the over-riding Craton for millions of years. Hello B&R!
Are the Rockies west of Denver a mcc?
A HAPPY ENCHILADA....peace y'all
Thank you for admitting me to college so I can have some structure. Healthy.
I'm on the 3rd run thru.
So I have to wait until November?
Another South Dakota reference; you win the day!
Could this extension be back arc rifting?
Me the whole time listening to Basil: 🤯
@1:08:30 IM (not so) HO, here's the "Ahah!" moment for some of you, and validation of what I fundamentally know, that oceanic spreading ridge divergent centers may be obliterated through subduction, but its "parental" upper mantle upwelling continues for tens of millions of years after it's over-ridden by continental drift AND continues with its divergent influence to the plate above it, no matter if it's Oceanic or Continental. This province Basil's focusing on is the Eocene margin of a subducted Oceanic plate which was East of the Farallon and West of NA, but it was "bulldozed" by NA from a location further East.
I’m in Cayo, Belize
WHATS THE LEWIS AND CLARK ZONE?
A long more-or-less East West slip-strike fault.
1. When Siletzia hits if breaks the conveyer belt of subducting ocean crust that is under all of WA, even if not directly rubbing it likely sets up some eastward compression on WA and ID. So Siletzia cut east force and thus we get extension. And by jumping trench we move the prime compression 200km away so net we get less in mid WA..
2. As idea, isnt clockwise rotation, the rotation comes MAINLY from having thick east side and thin west side, which comes from taking 10km sediment from mainland craton 100km thicker. The tapering of WA and OR the more west one goes is cause of Rotation???? Cali presses north and thinner west OR smushes more hence rotation. Eventually the ridges will curve into crooked smiles???
3. Siletzia is just ocean crust. Not a new thing. A bit of light o crust SLOWING and joining a mainland is Not a new force, it is reducing the force via subduction. Due to slab break. And jump. This subduction force is massive, made rockies, compressed WA and ID. Siletzia for 10 million years cut this pressure, till subduction 200km west resumed and recompressed land from 40ma to 30ma. From 50ma to 40ma less compression allowed CHEMISTRY to liquify new bunches of rock. Plus new eddies occured at break. Plus heat came thru slab break under ID. Siletzia the island was Not the big cause of stuff after 50ma.. MAYBE???
Cyrillic has, like, 34 characters.
😀
Thank you NICK and BASIL. A great expose!🐨🦘🧝🙃.
Kyla is in G. B.
LOL geology: very juicy!
Looked up the size of Siletzia. According to what was estimated, it was 10,000 cubic miles. About 3000 feet high. And about equal to a large "German chocolate cake ".
I could not find a metric of the volume of Wrangellia, but this video shows Wrangellia much more massive vs Siletzia
ruclips.net/video/2yKNhbY3Nbk/видео.html
You said ZED not ZEE. Cool!
THANKS FOR A GREAT CLASS. GOT TO LOVE YOU ALL GREAT CLASS TODAY. WOW. WE ARE ALL TOGETHER DOING CRAZY EOCENE Z. WHAT NEXT???? MAYBE JUST MAYBE WE MIGHT BE ABLE TO HELP OUR PROFESSOR NICK'S ADVENTURES. JUST ASK US PLEASE? FOUND OUT BIG BLACK SUGAR ANTS LIKE BANANAS. FUNNY, WEIRD, THEY ALL LEFT AT END OF GEOLOGY CLASS. GO FIGURE. REAL TIME ENTERTAINMENT. ROCK STOMPING BIG ANTS ON LIVE. LOL.
Christmas Valley
Stop being goofy and gives info.