Exotic Terranes of the Pacific Northwest
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- Опубліковано 30 вер 2024
- CWU's Nick Zentner presents 'Exotic Terranes of the Pacific Northwest' - the 20th talk in his ongoing Downtown Geology Lecture Series. Recorded at Hal Holmes Center on February 21, 2018 in Ellensburg, Washington, USA. www.nickzentner.com
I remember being told back in 1984 that we simply did not understand the west coast the way we understand the Appalachians. It's wonderful to see how much progress we've made.
It is amazing to see how the science has advanced in the past thirty or so years that I've been following it. I'm really glad to see that we are learning so much about the US and Canadian West Coast.
Quite frankly it’s probably understood better than the Appalachians at this point. I live in them, I bet you they were bigger than Everest. Sucks though, the gold is 200 million years deep as opposed to 50 max LOL
Given how old they are it’s much harder to understand; for instance I can only infer they were that large. They could’ve been even greater, maybe smaller. It’s undoubtedly certain they’re more than 50% completely eroded, that leaves a lot of clues. Geological history that no longer exists to tell the stories. What I can tell you is think about how flat the land East of the mountains are, they’re completely built from the sediments of the mountain. There’s 0 volcanic/tectonic traces anywhere near the coasts yet the lands above sea. Delawares over 100 miles away from the mountains. Also, look up Boulder field PA. It’s probably the most underrated geological feature in America.
I’m just learning about this now and it’s an awesome theory! I’m a chef by trade but rocks are my next best friend.
Nick, you piss me off!... I have been content in my old age and thought my life full.. then a few years ago I saw one of your lectures... now I watch all I can get and wish I was a young man again.. I would be a geologist for sure.. you make geology fascinating, fun and very very compelling... I am going to spend this summer driving to the areas in Washington that you speak of (I live in vancouver wa.) and look with new eyes at all the beauty you have taught me... Unfortunately I will not be able to climb and hills nor walk a long way but I can certainly see some of the road side sites you have mentioned.. This is going to be a fun summer.. thanks my friend for lighting a fire in an old man! Maybe I can find you there and tell you to your face thank you!
Memorable comment. Thanks! Come visit!
Agree wholeheartedly @tinkmarshino. I developed an interest in geology about 7 or 8 years ago, and then stumbled on Nick's lectures while researching the Cascadia Subduction Zone. I was hooked. I've learned more from Nick than anyplace else I've thumbed through online. Superb instructor and I hope his students appreciate what Nick brings to the game.
It is amazing his ability to teach.. He just draws you in.. I am gonna go visit the lad this summer..I think he would be aqn amazing fella to talk to..
Indeed. I don't know that I'll ever get a chance to meet him because I don't get to go east of the Cascades very much. But next time he's in Portland/Vancouver I'll try to look him up -- get an autograph -- shake his hand ("I'll never wash this hand again") -- ok that's a bit much. But anyway, we all get smarter by hanging around smart people. And Nick is certainly that. Enough rambling, back to the show....
hey Brian E I live in vancouver.. you are welcome to come with me this summer
I wish I'd had more teachers like you. I used to think rocks were boring. I was wrong! Thank you for expanding my knowledge and understanding of where I live.
Now in the time the virus concerns and shutdowns of schools, it would be time to share this bunch of videos with parents of the kids looking for something to do.... Good for the parents too.
If there's any such thing as a rock star geologist, Nick is that guy. He is the Eric Clapton of plate tectonics.
Agree 100%!
I concur 💯
Fully
@@willctheroysolved6408999pp 000p0000lp9
Does that mean Nick Zentner is God?
Can't say enough good things about Nick and his lectures. I'm hooked!
Damn, you are great! This is all so fascinating, i've been binging your videos for a few days now in between work!!! Please never lose your love for teaching for everyone's sake!!
Love from Tasmania, Australia
Also i wanted to add that Tasmania has a connection to North West America. Which i thought you might be interested in, if you didn't already know. I only registered it through watching your lectures!
"The island's oldest rocks seem to have originated when that part of the island was attached to western North America. Analysis of monazite and zircon in rocks of the ancient Rocky Cape Group in north-west Tasmania found that they are between 1.45 billion and 1.33 billion years old. These minerals, strongly resemble those found in Montana, Idaho and southern British Columbia."
Thanks Sophie! Hello from America. Really nice to hear that you're enjoying these down there. Thanks for the info below.
Adding one more. I’m Dutch (nothing but very young stuff here, Holocene and Pleistocene sands) and i’m currently binge-watching your lectures and contemplating coming out there just for the geology.
Hallo Tassie. Nick has caused me to wander around my boring suburb in Western Australia looking at rocks. I love it.
Damn
Would love to have had this guy as my Geology lecturer.
Great news
I can get this now
⭐️⭐️⭐️⭐️⭐️ 👍👍👍👍👍
I was blessed with one like nick at UT El Paso. Made me fascinated with Geology. Nick is so good at his presentations.
Zentner is the high bar for teachers everywhere. What a pleasure to have these informative, fun lectures available here on UA-cam.
Nick, you are the best teacher EVER!! I'm glad you are back, I have watched all your lecture like 4 times each!!
7munkee im right with you. I have watched them many times too
Thanks! Glad that you are enjoying the lectures.
And I thought I was the only one who watched them multiple times! I should have known better. They are so interesting.
I discovered Nick during our various lockdowns here in Australia and have not let up watching his vids since. Now I want to live in Seattle.
Fascinating! I love that the geologic story is still evolving. You do a great service!
Thanks Michael!
I was thrilled to see a new video from Mr. Zentner... thank you for taking the time to make this for us...your subject matter is so interesting..
Thanks much. I enjoy putting these together. Nice to hear that you are enjoying them.
I bet Nick’s midterms and finals are BRUTAL though!
You have renewed my interest in Geology. I have been binge watching your presentations since I found you on UA-cam.
Same kinda getting interested in archeology and how different the world our ancestors lived in and part of the story is geologic so here I wound up
Super interesting lecture Nick. I was going to email you to see when you were going to put out some of this years lectures. Thank you and love all of your lectures
Thanks Scott!
The thigh bone came from a Tyrannosaurus Mex
I've been watching his current series about exotic terranes and had to rewatch this.
Mexican dinosaur enters northwestern US state through non-approved route, setting precendent for relatives to come in today.......Love it. So, will the Americans expel Mt Stewart and send it all back to Mexico? Or just let Mexico stick a flag on top and live there like in an embassy?
Dear Mr. Zentner,
A friend who's a 4th generation native Seattle-ite and a retired history teacher with broad Pacific NW experience & degree in regional native anthropology from UBC, has told me repeatedly of how Lake Washington used to be a seawater inlet until Mt. Rainier/Tahoma's (the Osceola lahar) cut off its link to the Sound, so that it became a freshwater lake. He's told me of the marine vs. freshwater fossils in/around the lake, and similar evidence for the shift.
I've been hunting through your lectures and related posts, and can find ZERO mention of this geologic fact. And all the "history" of Lake Washington talks about it being freshwater, and people yammer on and on about the water levels in L. Washington and L. Union being different as well as higher than sea level, presenting settlers with the challlenges of building the locks. Even the submerged forests in the lake are attributed simply to earthquake-related landslides-but no mention of lahar.
I would really love to see a solid (possibly interdisciplinary?) lecture on this aspect of geologically recent history.
Deb S., Tacoma resident
Thanks Deb. I've done a Mount Rainier's Osceola Mudflow lecture....but I didn't talk much about changes to bodies of water in Puget Sound. Good idea. I'll that to my list.
This guy is a "Rock" star!
I'm currently watching these videos for a second time after a couple of month; I even bought a book on geology in my country thanks to these.
Thank you Mr. Zentner and CWU for putting these up, these videos are real gems!
Wish I knew what I've learned in one day of watching your lectures when I lived in Washington.
But now I also recognize the basalt formations here in Ct. Always heard my hometown of Meriden, ct was an ancient caldera. The basalt columns surrounding the city confirm it.
Just found these lectures about a week ago, and I've watched almost all of them now. What am I going to do with my life when I'm done? You've got me fascinated with geology, and now I'm wondering how to find out the geological stories of my own part of the country, in Alabama. Suddenly, I just have to know! My house backs up to an area of old iron mines from around the early 20th century. Of course they're all grown over now but when and how was that iron deposited in that rock? Oh, also there's a big cut in Red Mountain that goes through layers and layers of different type of rocks. How do I find out more information?
All of your videos are about the Pacific Northwest, which is a very interesting place, but are there similar cool stories about the geologic past of other parts of the country and the world? How did the big earthquake in South Carolina happen, and what's the story there? What's the future risk? My nuclear plants (I'm an engineer) are in Georgia and southern Alabama and I'm interested in the history and future risk of those places, too. How did I never realize geology was so fascinating before?
Thanks so much for your lectures. Please make more!
Hello from the Northwest! Glad that you've enjoyed the lectures. All of my stuff is at nickzentner.com There's a reason I live here....tough to beat it for geology. Best wishes to you.
I enjoy Nicks presentations !
Welcome back Nick! Hope there is more to come.
Thanks! 3 more new lectures will be posted in the coming weeks.
Hey, Nick, another great lecture. Thanks! I know it's not really a WA but do you have any plans to make a presentation on Mr. Mazama/Crater Lake?
Good idea. Will add to my list. Thanks.
Your hair looks particularly nice in this video, Nick - it's a great fade!
Ha! I'll tell Jamie at www.northwestbarber.com/ !
Nick where were you when I thought about going into geology. Half my life wasted wondering where all this lava came from in Idaho & eastern Oregon.
Yellowstone hotspot:
The Yellowstone hotspot is a volcanic hotspot in the United States responsible for large scale volcanism in Idaho, Montana, Nevada, Oregon, and Wyoming as the North American tectonic plate moved over it.
It formed the eastern Snake River Plain through a succession of caldera-forming eruptions.
The resulting calderas include the Island Park Caldera, the Henry's Fork Caldera, and the Bruneau-Jarbidge caldera.
The hotspot currently lies under the Yellowstone Caldera.[1]
The hotspot's most recent caldera-forming supereruption, known as the Lava Creek eruption, took place 640,000 years ago and created the Lava Creek Tuff, and the most recent Yellowstone Caldera.
The Yellowstone hotspot is one of a few volcanic hotspots underlying the North American tectonic plate; others include the Anahim and Raton hotspots.
en.wikipedia.org/wiki/Yellowstone_hotspot
Snake River Plain:
The Snake River Plain is a geologic feature located primarily within the U.S. state of Idaho.
It stretches about 400 miles (640 km) westward from northwest of the state of Wyoming to the Idaho-Oregon border.
The plain is a wide, flat bow-shaped depression and covers about a quarter of Idaho.
Three major volcanic buttes dot the plain east of Arco, the largest being Big Southern Butte.
Most of Idaho's major cities are in the Snake River Plain, as is much of its agricultural land.
en.wikipedia.org/wiki/Snake_River_Plain
Craters of the Moon National Monument and Preserve:
Craters of the Moon National Monument and Preserve is a U.S. national monument and national preserve in the Snake River Plain in central Idaho.
It is along US 20 (concurrent with US 93 and US 26), between the small towns of Arco and Carey, at an average elevation of 5,900 feet (1,800 m) above sea level.
The protected area's features are volcanic and represent one of the best-preserved flood basalt areas in the continental United States.
en.wikipedia.org/wiki/Craters_of_the_Moon_National_Monument_and_Preserve
Click for map of Snake River Plain/Yellowstone Hot Spot Trail, with dates of past eruptions in millions of years ago (mya). The dash in the age indicates a range. ie, 2-0.6 = between 2 and .6 million years ago (.6 million = 600,000 years).
lh3.googleusercontent.com/proxy/ftv_XibP3FO_nUgjsqW3wDIF7bHsn0E-sQmjiT6ng4Xs8SJvHQ1fuGnXZVcGdLNiaGsyl2Kfk7EwdR2JKtTipar3amUqxHgA5kwaMVFeAGfcyOz36nVPiEkFSTHM83UEowYi8QOoOSplqtoEko8ZmuzFaL27qCeJmBGFuZXC
encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQWDWWvYN2j7ZgUQ3oSwQ_Ac8R6AK8O_5crnm7QdgCS2FeZihy6&s
I really wish that map of yours included Canada, especially being based in Washington, I'd love to see the connection to B.C. I'm biased of course, being a hoser, but the point stands.
B.C. Isn't it funny that the geology on either side of that line knows to stop dead at that 49th parallel??? :)) How does it do that?? Doing geology research northeast of Metaline Falls 3 miles south of the international border and a mile west of the Idaho border, that artificial line used to drive me just crazy trying to get maps and professional research papers!! Funny how the rocks themselves can be so wonderfully inclusive and integrated, but the human politics can't. Must be the rocks are more intelligent. FYI, many of my students were from BC and I was invited to do my Ph.D. at UBC on old volcanoes east of Bella Coola. People tell me I still speak with a soft Canadian accent. :)) I do hope so, eh!!
Fascinating! Mind blowing! Too cool! Thanks to Mom, I collected my first fossils at 6 years old. (Devonian from Pennsylvania)
That is a really well chalk-drawn map of the Northwest.
Love ya, Nick! I've always been interested in geology, but I didn't know how complex the geology of the Pacific Northwest truly is.
I lived in Washington State for 3 years in the 80s and have been back here for almost two years. Since I am now retired , I have the time to peruse online things like Nick Zentner's lectures. And because I'm currently in the Pacific northwest (out on the Kitsap), I decided it was time I learned about the geology of the area.
I found Nick Zentner's videos recommended to me because of my browsing on UA-cam. I am so glad I checked him out! I really enjoy his various lectures. Some geology professors have been known to make me fall asleep, but not Professor Zentner. As tinkmarshono below has noted, he makes geology fun and interesting. If I had been able to take one college-level geology course, Nick Zentner is precisely the type of professor I would want to be teaching the course!
This video is one of his best. I've long known that the West Coast of North America is a collection of 200 or so exotic terranes, but now I've learned that part of the Washington's crust used to be Mexican crust. I'd never even remotely considered that. I love to learn new things, and I've learned a lot from these lectures. Rock on, Nick Zentner!
So im currently (and hopefully REALLY temporarily) living in my car in a very small town where I fortunately personally know most of the cops here. One walked up to me watching this on my back bumper...
Cop "what kinda trouble you causing today?"
Me "I'm watching a geology lecture about the Pacific Northwest and i do not have an educational background in geology (paramedic). How much trouble can I possibly cause?!"
Cop "still lots...." 😂
Thank you for this wonderful presentation. I graduated from Erasmus Hall High School in 1961 in NYC with a Commercial course, no Earth Science classes back then. It's so enjoyable for my brain to learn new stuff and you present it so that I can understand it. Thank you from the bottom of my heart.
Nice to hear, Marian. Thanks for taking the time to write. Come visit!
Hello amateur geology fan from MT here, I've been watching alot on your lectures and have a theory I'd like to share. What if the Cocos plate is an elder plate (sort of like a finger shape) that is in convergence with the North American plate all the way up to the Canadian border, sort of pinched by the subducting Pacific plate. could it explain the Rocky divide and volcanism old and new around the cascades. Juan de fuca being the tip of the broken finger... the subduction and convergence lines being so close could create conditions for extreme heat currents for creating super volcanism and tectonic fracturing. Maybe considering an old plate being there can help predict future reactions and the sources of Yellowstone's behavior.
Also, what if the salmon River quartzite deposits are actually from the glacial flood waters, not from just a slowly melting/recurring glacial dam (lake Missoula) but from Yellowstone's super volcano erupting and causing a rapid glacial melt... One giant wave with enough initial velocity to push that local geology West and wash out those cool massive sedimentary ripples you talk about. An eruption could cause an increase of greenhouse warming. Exciting to think about geologists, tectonic scientists, and climatologists collaborating this massive narrative on the fireworks stand that is the west coast!
How does the hot spot factor into your hypothesis?
You the man Nick. I live in NH and look to move to the Tacoma area. As a child I would look at mountains and wonder how they got there. They still fascinate me at 57. I love the views of the volcanoes on my approach to Sea-Tac. Thank you for the knowledge.
Are you insane?
I cant get enough of this but nobody in my life wants to talk about it!
We're all here Patrick! Talk away!
I know! People look at me like *I’m* the crazy one!
Yah, Patrick. Like we all got a buncha rocks in our heads, huh? :))
Hi Nick! On the subject of exotic terranes why am I finding very rounded and weathered GRANITE at Doran Beach in Sonoma Co, Ca? Would this tie to the BAJA BC stuff(!), maybe? The place I find those same granites ( I think?)is Yosemite valley far away and higher elevation. Hmm. I really enjoy your lectures.
Thanks
I’ve learned more from Nicks videos about geology than I ever did in school. Ty❤
So now I'm really confused, Is Trumps Border Wall in California or Washington Ha Ha *-)
Nick, I've watched a LOT of your lectures - not quite all yet, but I'm getting there - and this one was the most dramatic, by far. I'm casually - only casually - familiar with some of the geology you talk about ... BUT this was brand new to me. Holy cow! Mexico in Washington state. It is a superb challenge to wrap my mind around this kind of movement with such convincing evidence. Thank you!
That chalkboard really needs BC and Alberta added to it.
this ain't about Canada. It's about the Pacific NW of which Alberta is not a part of. Maybe BC is, but that's in Canada, not down in Washington. (nationalism not wanted...ANYWHERE)
Mark Rose - What the heck is an ‘Alberta’ and a ‘B.C.”?
Yours truly,
-An American
😂 🇺🇸❤️🇨🇦
@@RockHudrock Now that's proper trolling ;)
Not really, that is land that was scrubbed off by the ice sheets and is mostly uninteresting.
Just another comment saying I love these lectures. They're fun and insightful, even for people not living in the area. Hello from the SFBA.
Your classes are awesome. Very interesting listens, thank you :)
Great series ,I got caught up in your series looking for info. on wire gold .That led me to your Liberty Gold series and all the rest.Here in Central Alberta its all about the Fossils and Moraine very little " chocolate cake" left after the Ice Age.The Wife and I enjoy checking out the rocks while fishing on the Red Deer.Petrified wood ,dino. teeth and bone fragments ever time out.If you and your family get up into Alberta you must check out Dry Island Buffalo Jump Provincial Park and Cypress Hills Interprovincial Park. As for a UA-cam channel, the Royal Tryrrell Museum of Palaeontology has Guest Series Speakers on Fossils from around the World ,as well as behind the scenes look of the museum.For all those looking for great info. on the cutting edge on the world of fossils there is none better on the net.
Thanks Mike! And thanks for the tips.
Love the groovy intro music.
fantastic videos, he ha so many too, wonderful watch, TY Sir...
Best standup routine on UA-cam
I found you looking at Cascadia Earthquake information and fell into the binge rabbit hole of watching everything you have out. Great work! I'm a Whidbey Island transplant from Arizona and it's nice knowing what I'm looking at traveling around.
Welcome to Washington, Sean. Come visit Ellensburg!
I have been viewing the other You Tube talks that Nick Zentner has given over the past years. This one is yet one more that I gave a hour to watch. Very important to know the topics, and he really is a student of this land mass of N. America and the state of Washington seems to be a great classroom of earth changes. Thank you Nick.
Thanks for the comments. Yes, Washington is a great place for geology!
Great lecture series!
How about one on the Olympic Peninsula? Origin, features, etc.
I know that you've touched upon it in several lectures already but it would be nice to see a more geographically focused lecture.
Thank you so much for sharing your knowledge.
(Brace yourselves for the BIG RIP...uh, I believe it will surprise the HELL out of everyone who lives on the east end of the Mediterranean Sea; the Bible tells me so, Amos 8:8 + 9:5 + Micah 7:19, "He will toss our iniquities into the bottom of the sea", also Habakkuk 3:10,"The mountains saw you and writhed. Torrents of water swept by; the DEEP ROARED and LIFTED IT'S WAVES ON HIGH". (Damn, I forgot my surfboard).
Good to know.
Such fun! I'm glad these videos were put online.
3:15 thank you! I was about to go grab the dictionary to look up terrain because I thought I was going batshit crazy.
What a find you are! This was big fun, as are all your lectures.
Wow, so a piece of what is now Mexico, decided to travel north, at a rate of 2000 km/30M years. Very cool! That's a rate of 0.00006667km/annum! You could also say it's a rate of 0.067m/year, or 0.0026378 inches/year.
Nice math. Thanks.
Added to the basic concept of paleomagnetics, is what was learned via US Navy surveys in the late1950s / early 60s.
These surveys, when plotted on a large-scale map of the seabed, looked like a large, slightly wonky checkerboard. This was because the survey plotted the magnitude and DIRECTION of the residual magnetic field in the rock, a field that was "frozen" in alignment at the time the magma was air or water cooled.
The POLES reverse on what appear to be a "regular" (geologically speaking), intervals. The implications of a collapse and reversal of the magnetosphere are grim: no magnetic field, or a significantly reduced one, heralds rough times for life on the surface, especially animal life. The cosmic / solar radiation deflected by the planet's magnetic field has free reign to fry the surface of the planet until the magnetosphere re-establishes itself, regardless of the polarity when that occurs.
Navigators have known about the movement of "Magnetic North", for quite a while. If you look at the "marginal information on a military / "real" map, it will have a diagram and text detailing the "magnetic deviation" at the time of survey / printing AND an annual rate of FURTHER deviation. This is so people can safely use magnetic compasses to find their way home, instead of falling off a cliff or similar.
Because of the non-homogeneous nature of the planet, the deviation at any one time differs ALL OVER the world.
Who would give this a thumbs down? Young earthers?
Haters gonna hate, Karen!
morons who think the earth is, like, 6000 yrs old; in other words, people who don't matter anyway!!
Karen Parkkonen Nope, it’s disgruntled Canadians. 🇨🇦
This sounds like if you take some big and some pac,
And then mix it up in The Pot,
Sprinkle a little bit yellow top,
What the F do you got?
You got the realist and illest killers tied up in a knot.
It’s like the fight to the top to see who died for this spot?
And it was all yellow!
That was Coldplay
❤
The daughter born on the base meant Fairfield CA.
Stomping with the Air Force pun!
Do you like to rap?
We’ll have to rap about it sometime 😂❤
ua-cam.com/video/Gq4yfR4woY8/v-deo.html
10 feet at a time ... how many earthquakes for the final distyance? What's the duration? How many years between earthquakes?
Tom, we did some really complex computations and computer modeling on the vectors of the plate motions over time. We found that Baja and coastal California will be an accreted part of southeast Alaska at Anchorage in about 10 million years from now. Other pieces are also rifting off North America and will become separate island blocks in that time and will eventually accrete to Southern Alaska too... like the Sierras and Great Valley are tearing off along the East Sierras fault system and moving northwest, the west end of the Grand Canyon along the Hurricane fault called the Shivwitz block and the western half of the Mojave Block tearing loose at the Central Mojave Shear Zone faults near Barstow and the eastern Mojave tearing along the Colorado River as a separate piece too, all rifting and moving generally northwest at different velocities and directions. Eventually the great earth cracks (stretch marks) will be deep enough that sea water will fill the cracks and the elevated areas will be islands. The whole southwestern edge of North America is all torn and tectonically shattered. It's literally coming unzipped in time. Some day Flagstaff, Az and Reno, Nv may indeed be beach front property! :)) But don't buy your beach house just yet. We have 10 million years to wait.
Nick, you are the Carl Sagan of Geology. Thank you.
Thanks!
I am now hooked on your lectures Mr. Zentner! Amazing stuff. I am not a geologist at all. Just love to learn about the past
Thank you soo much for the lectures. Been loving them!
Thank-you so much for new lectures! So interesting to see how the BC theory is playing out. After your first youtube lecture about Mt. Stuart and the magnetic positioning of the whole batholith, I've been mulling over how the granites could have traveled so far north plowing up a path to Washington! But yeah, you make it make sense. Also, seems that this type of activity of the terranes may explain the opening of rifts deep in the crust to create the conditions for the basaltic ruckus 18 ma. (while holding hands with the Yellowstone hot spot).
My one complaint (other than the audio) is that I would love to see reading references listed in your description (please?).
Thanks for watching. Email me and I'll send you some papers.
Outstanding presentation! Thanks for posting.
Just a few thousand years to go and I can be part of the Washington shoreline. For now I'll to stay here in Ventura.
Thanks Nick. You make what you talk about so interesting. I just discovered you on UA-cam a week ago. I will watch all the videos you produce. Thanks Nick.
You have different terranes spelling...why? In Texas, it is spelled terrain.
Two different words with different spellings and meanings. Google is your friend.
WOW so very good . Reminds me of Robert Jonas 1973WSU. Thank you!
You can find fossils in Republic, WA.
I so enjoy Nicks lectures. :)
Thanks Nick, I discovered these lectures a month ago. I'm a big fan.
Thanks much. Nice to hear.
Your full lectures are far better than the 5 minute shorts, Love your stuff!
I agree! Thank you.
Thanks CWU & professor Nick for posting this great series. I studied geology at Illinois State off and on from '78 to '87 and only had field camp to finish but life goes on... I am continually amazed by how much I remember and can infer, this series is a joy to listen to!
I did something maybe 35 years ago or so after my first trip to the UP of Michigan. We had stopped at a wayside across the highway from the Ford Center in Alberta, MI.
I picked up this lonely looking chocolate brown rock and brought it home. In brighter light I saw there were tiny crystals but knew if I tried to break the rock I'd lose the crystals.
So what does an inquisitive person do? I put my stethoscope on and listened while I put a magnet near it. I heard a lot of clicking and supposed those crystals were realigning themselves but to what??? Do you know?
BTW I'm happy to see some new videos from you.
Thanks Priscilla. That was probably 1 billion year old basalt that you collected...no chance that the minerals were moving. That only happens when the magma was liquid back in the Precambrian.
I like this theory a lot Nick and you do a nice job of explaining it and providing evidence. I have played this for a couple of my courses so they can get a local flavor for PNW origins. I worked on the Table Mountain Formation east of San Diego which likely tapped into the old Poway system to obtain green metavolcanics. Thus I especially like the notion of using zircons and stream systems that are now disconnected as piercing points. Looking forward to more videos.. you provide a valuable educational service here. Many thanks!
Thanks much, Sean!
Thank you for another great video
Having watched all of your videos and been totally inspired by them one can only wish that it would be incredible if there were a thousand cloned Nick Zentners located in all of the very interesting geologic regions of the world and explaining their geology in a similar fashion to what you do about the Pacific North West. The Siberian Traps and the Deccan Traps come to mind and so many other fascinating places around the world. However we will persevere and just enjoy the fact that there is one Nick Zentner who teaches in the most beautiful, interesting and informative fashion of just one spectacular region on the planet. And also greetings from Australia. Please keep up the brilliant work. I can see that it is most appreciated.
How ironic -- You're from Wisconsin, and moved to WA, but I was born in Spokane, and grew up in WI. (Great vids, BTW, but you've already been told that by lots of folks who are more qualified to give that opinion than I am!!)
You can follow caves: Oregon Caves, and various cave areas in the Sierras, where limestone from limey warm ocean sedimentary gets ground water seeping it away to make caverns ans limestone quarries thru CA. There's greenstone in NW WA, the Siskiyous, all over the Klamath and south all thru CA. Petrified wood is fun because of the paleobotanical info when there's good wood structure preserved, and trees buried in volcanic events are prone to this fate. There's petrified wood all up and down the Pacific Coast. And you can see a continental rupture very clearly if you get a daytime flight from LA to San Jose Costa Rica: Baja and everything north NW of the Colorado R. mouth is headed north and you can see the lava hemorrhaging out of the rift. Yay Geology!
Knowledge loved working and eat
This presentation was fantastic. Thank you for sharing.
So, yer sayin' that Mt. Stuart is an illegal alien? ;)
So I'm lookin' at that first diagram of the fossil-spots that aren't buried by lava, and noting in that arc of exposed spots across Oregon a peculiar parallel to the path of the Yellowstone Hot Spot. And wondering if that lost plate is subducted waaaay over there.
(Also, I still want to know WHY there's a hot spot, and why it doesn't move. _Crack in the World_ , anyone? )
Oh, and the dinosaur beds. What happened to the 60M years worth of debris that should be on top of 'em? Or did the glaciers push that down to Nebraska and points south?
I know there is some controversial evidence that at least one hotspot the Hawaiian hot spot may shifted over geologic time so it is a possibility that they can move but generally Hotspots don't show behavior for that with the Icelandic Hot Spot having remained fixed more or less in place over the Mid-Atlantic Ridge. The simplest solution in science is generally the most likely according to Occam's Razor but if evidence comes up supporting a more complex solution more and more scientists will come on board with the idea. Personally I wouldn't be surprised if hotspots do move over long timescales but that motion if it exists is a lot slower than the movements of the crust itself.
Erosion does play a huge role in geology removing rock and converting it into biologically accessible nutrients. I don't know exactly what erosive forces exposed the rock there but erosion is definitely part of why those rocks are exposed
Lol... At 58:28, Welcome to... 😆
You would be perfect for down here. I now live in Las Vegas in my old age but I am heavy into the geology of the area and there is still cretaceous in Valley of Fire state park. Lots of T rex and other bones but not like what they have in Montana.
THIS IA REALLY GOOD AND BELIEVABLE MATERIAL . . . .
THANK YOU. . . .
I really like this guy!!
I sincerely wish i had a teacher like you. You have an enthusiasm for knowledge thats contagious and ive been researching ancient geology and i found you and watched it and i haven't stopped watching your videos one after another absorbing as much knowledge as possible Thank You for all You do for us.
I really enjoy this lecture series and am thrilled we finally have worked our way to the many scraps of exotic terranes. I’m not a Geologist or even really that knowledgeable on Geology but I did study Geology at Whatcom Community College (I’m originally from Ellensburg so put the pitchforks down villagers) and one of our field trip was to Sucia Island which is a fascinating place with a lot of interesting features to study Geology on to include a very old piece of exotic terrane accreted and grafted onto the island itself.
Jealous of your trip to Sucia. Thanks for watching.
You might want to check your spelling...terrains, not terranes...good thing you're not an English teacher.
Good thing you’re not a geologist. Definition of terrane
1 : the area or surface over which a particular rock or group of rocks is prevalent
Wake up, Sherry.
Duuur
Thanks for sharing your brilliant mind with us ..I'm a bit jealous you don't live near the mugillon datil ridge but I'll take what I can get . Now I want some of that green n orange rock for my collection.
Fascinating. There is serpentine rock in the Illinois River, Josephine County to Curry County Oregon. Serpentine along Bear Camp road, Gold Beach along the Rogue River. Bear Camp road between Gold Beach and Grants Pass Oregon.
Wild Rogue Canyon and the Kalmiopsis Wilderness.
With the continued motion of the North American plate to the west since the break-up of Pangea, was this strike-slip fault that existed 35 million years ago a result of the Pacific plate moving anti-clockwise?
It did occur to me that even though a super eruption would spread out on all directions, in 3-D there would be a heavy upward column that would be blown by wind slightly before it would collapse, thus it would still be a teardrop shape that would make it to eastern Nebraska!
Okay going to say it. Nick you are absolutely beautiful! Literally love all you have done explaining how my home(the PNW) became to be, but............ It's pronounced like what we have in our body or the keyboarded musical instrument of the same name. No it won't kill me but still grinds my gears.
Dr. Nick; Superterrane. Something like what we used to call a Geosyncline?---Capt. Mikey
Does this match the Northward Hawaiian island trail, before they began heading east?
Thank you, for this! The more I watch for videos, the more clearly I understand the geology of our Pacific Northwest.
I just realized that if you live west of The San Andreas Fault you are not an American. Pacificin?
50:20 ‘this glacial erotic was brought in from Canada’
Insert your own joke here…
I do wonder why they don't use modern Terranes as examples. Places such as New Zealand or the Philippines would give the student a idea to grasp.
I a 🚪 this professor. He is awesome. If there is ever a foundation is set up in his honor, PLEASE let me know.