My afternoon on Blue Mountain. On a low cloud heavily overcast day my hiking mate and I drove up to the top thru the clouds. 400 feet from the peak the cloud cover broke into Carolina Blue clear skies. The view looked like numerous rock hills towering over a snow covered plane...impressive!
That opening shot where you were slowly turning around with the camera while doing your introduction was really impressive. You're getting better at this with every video Nick!
Ohhh. The scenery. That rarified air. And yes, the Geology! WHAT a Terrific Trio, this. Remembering lectures you've done on the mish-mash of collision and subduction on the Olympic Peninsula and coast. Going to search my saved videos to review those. Thanks so much!
Years ago my father was an aeronautical engineer for Boeing. He always loved the Olympic Peninsula; when we came out to stay for the summer, we traveled there too. I recall Lake Quinault ( though not sure where we would have stayed ).
A professor out in the field showing how a profession introduces the next generation to the intoxicating potential of discovery. Isn’t this a cutting edge kind of scenario? Pretty good, Nick. ❤
Thank you Nick. The only reason I can follow what Erin, Mike and Ken are speaking about is because of you. Following you I have learned so much Geology
Love it! Great seeing all these areas in WA that I've never ventured to, and the stories of all these places (BIG ROCKS), that beautify the sunsets in Seattle. Thank you for bringing us along!
Thanks for an explanation of work that is being done about 12 miles from my home. I look forward to Erin's and Mike's dating results in respect to the Crescent and Blue Mountain formations and furtherance of the formation relationships to each other in their story development.
I don't pretend to understand everything the team was saying (there are a lot of big words), but I think it's great they way they approach their own understanding of what the earth has gone through over many millions of years. They make an observation, form a hypothesis, and then try to disprove it by coming up with other possible explanations for the original observation. Then, hopefully there is a consensus among their colleagues so they can form a theory. They are scientists looking for the truth in the rocks.
Quite a bit of "inside baseball" terminology for a non-geologist, but I was able to follow the general drift of the conversation, and the scenery, of course, is spectacular. As a retired teacher (history, high school), I enjoy watching the old hands guiding the relative newbie through some of the details involved in field work, and the implications therefrom. Well done, professor, and technically, that 360° pan during the introduction was impressive.
Great to see another part of Washington that’s pretty different from the other side of the cascades. It’s even better to hear the explanations and theories as the other geologists discuss their findings. We really enjoy this way of learning about a place we’ll probably never visit. Many thanks to all of you for sharing . 🐻
Moving into autumn sees us looking forward to this year’s ’A-Z’, Baja-B.C., but I’ll miss these summer jaunty lessons you’re so generous to offer us all … thanks, Mr. Zentner. See you in class ‘virtually’.
These are my old stomping grounds; you can see my old place from Blue Mountain and I've hiked up Deer Ridge to Blue Mountain more than I've used the Deer Park Road to drive up. - Blue Mountain is nice, but I'd love to hear you wax on about Mount Angeles and the Klahane Ridge.
Great you could squeeze this one in RIGHT before starting 101 the next morning! Fascinating learning with these guys and reinterpreting what they just learned.
Thank you Mike and Erin, really appreciate the proficient and clear way you convey the ideas and thoughts so even some of us armatures can follow along! Thank You! 😊
I will have to watch this multiple times. I just finished listening to your podcast on this visit. I am still trying to visualize the sequence of events. It's good to be challenged.
This is my backyard! Nick, at the 44:10 mark, Michael is pointing out a river valley and an area that looks clear cut. This is the Dungeness River valley and the river runs at the base of that hill. Interesting that the Elwah fault runs there too. The clear cut area is actually a rock quarry, one of the only ones in the area. I wonder if there might be some exposures there worth exploring.
Glad you enjoyed my backyard! The Olympic Peninsula is my home. I have hiked, biked and camped in almost every spot on the peninsula. As a kid my family camped at Lake Ozette and we were able to visit the archeology site of the native village that was surveyed and studied by the WSU archeology department. That dig was the source for the Makah Tribal Museum artifacts. I’m grateful you have stopped by my neck of the woods to explain a little more about the geology of the area.
Cool! Another video! Part of me wonders if some of the weird geology of the Olympic Peninsula is due to Siletzia coming in hot and causing earthquakes and landslides as it did, then dumping lava all over and creating faulting and inter bedding in the havoc. Thanks, Nick for meeting up with these three and getting them to clarify stuff as you all went along. Sure helps us newbies understand better some of the current and proposed ideas of Olympic geology!
I just finished listening to your podcast this morning--I'm glad you've posted this complimentary in-depth video. It's really cool to see geologists in action 😃
Thank you Prof Nick for sharing your last free day of the year with us. Looking forward to the in-class sessions where you put all the info you've gathered together!
Hello Nick. I am a dude that lives in SoCal, I work at a market. I got interested in geology two or three years ago when I started hiking instead of biking, for a bunch of different reasons. I found your TH-cam channel and I love your stuff. I love the content and the way you present it, and I love your personality, it helps me to absorb the material. I feel that you are truly a good educator in that regard. I respect that in all of the greats, and you are pretty darn good. Thank you for that. I have a specific question. I have been observing fossilized mollusks in a few locations locally here. I have gathered loose samples, and there are many better samples that I have not wanted to disturb. My question is, do you have a recommendation as to how I can contact a knowledgeable local geologist regarding specific local phenomena. A person that I could ask questions, and share the information that I have found. I have tried to Google stuff with my local community college, to no avail. I just wondered if you know specific geology people that could direct me. Thanks
There is quite an exposure of different rocks types and formations on the ridge northwest of Buckhorn Pass, west ridge of Copper Creek. Quite a mixture all in one place.
Great seeing them again! On my vacation I stopped and picked up rocks seberal.times in W Virginia and Virginia that was at the top of the mountains that were all just layers of sandstone, mudstones, and shale. So having seen it, I can understand this formation. Great stuff! But what I saw was layers, not as pillowed as this. Just hard to believe how mixed Washington is allover the state. I wonder if history will ever be able to describe what happened from Yellowstone to the Pacific. I guess BC really is included. Too bad T-Rex did not leave a diary! LoL
Oh my gosh! I was at Blue Mountain on my birthday! But it was smokey and cloudy. AND I really wished I was with a geologist to interpret the mudstones, fault, and everything I was seeing. Thank you!!!
It's one thing to look at maps, another to be able to see it in person, yet another to get the interpretation of the features! Nick, I like hearing the ages of the rocks/formations you go to. It makes me realize the whole West Coast of N.A. was going through accretion and exhumation 55>Ma. Nice that you, Erin, Mike can break the big concepts into common speak for us mere mortals! Thanks to all. PS, Was S.A going through the same accretion changes?
That's crazy that the semester starts so late up there. I was always back in college the final week of August. Love your content, keep up the great work
Gosh I got so lost in that video that I was surprised when it ended.. What a great little adventure that was.. Well time to get the clean clothes out and polish the rubber boots.. Thanks brother.. as always never a dull moment at Nick's rock emporium.. Carry on!
Undersea volcanos formed this land many many millions of years ago. Two tectonic plates crashed into each other (underplating) forming the landscape you see today. It still going on BTW. Of course there is a little more to that story and thanks to Nick , as he brings us again two geologists who can explain it all. Thanks to Erin and Michael for the explanationsand discoveries of the penisula's special attributes.
.. did 2 tectonic plates crash, or was SiletziaCrescent lava lump part of the farallon ocean plate going under NAmerica at Seattle old coastline but got at 20km too thick so farallon stalled and the thinner 10km oart broke off under midWA in northerly Line from medford to Canada and the thick lump from Seattle to current coast got added as a shallow sea 100km wide til 10my later subduction now offshore started jamming mud under it ""underplaying" and raising it a bit except Olympic Mountains extra underplaying raise the lava lump edge to vertical, elsewhere like all Oregon normal sedimention from 1000 creeks filled in 10km in the shallow seafloor and subduction rumpled this sediment a bit .... Just saying sediment from land over m.years and muds cover m.y are sorta more of the story.. except without a shallow seafloor the ocean currents sweep any creek mud await to Alaska ha.....
That's so trippy that they find ancient oceanfloor landslide, and or, river sediment deposits, from many millions of years ago, up in the Olympic Mountains. lol. The hike up from the supduction zone and then dragged along the shoreline and rolled around and intermixed. We see order, but the universe is chaos. Just on time scales so large that we cannot fathom them.
The comments at 48 minutes about sediments you want to see always being under jungle cover, are what make me appreciate being a geologist in Nevada. Our rocks are on display.
For those who lack a geologic background like these insiders, here is an excellent video that explains the geology of the Olympic Mountains in everyday English, aka the 'Common Tongue': th-cam.com/video/bxgV8m8AK6M/w-d-xo.html Now you can follow what they are talking about with at least some vague understanding.
I suppose it might look "forever" from the initial camera panorama, but for the smoke haze prevented us from seeing Vancouver Island, across the JdFuca Strait. I suspect Victorians have the better view, being that VI is boring logged over hills, compared to the dramatic glacial peaks of the Olympics.
How does the OWL play into this story. Were you able to see the basalt outcrop at Tongue Point/Crescent bay while you were up on the Olympic Peninsula? Growing up in Port ANGELES the geology of the Peninsula is fascinating. The entire Pacific Northwest is amazing.
At .... 45:25 to 45:40... M. E. chuckles and smiles. This sounds familiar. Was this something written or said ( in one of your video interviews several years ago), regarding USGS geologists working decades ago...in Alaska? So Nick have a great Fall Quarter Sir.
I used to bear and mountain lion hunt with hounds on that mountain when I was young with my friend and family before this state outlawed hound hunters pretty sad I sure do miss hunting but now I get to learn about rocks enjoy the videos keep it up thanks
Hey Nick, can you do a video about the formation of Hudson Bay/Nunavut and how it relates to the end of the ice age? Or post links or references to learning material?
With the Siletz (Crescent) Terrane’s alleged influence to the N. Cascades, it must’ve been x-times it’s present volume at that time before mostly subducting. The terrain of the Crescent Terrane around the Olympics and Victoria Island couldn’t have had any influence in its present volume/state; indeed, it itself was the Terrane that became deformed and thrusted by less dense accretionary wedges from the West. It appears to be just a sub-surface sliver of its former mass, and should be reverse engineered to account for its alleged influence. Using the present @50 mile wide mass of Siletzia off-shore of its center @Newport, OR. (Siletz River,) and 200 miles long- @Tillamook to Vancouver Island, the area of the lost Siletz Terrane mass would’ve been no less than 10,000 square miles x-the 30 mile depth of the Terrane. Of course, that doesn’t account for the lost leading edge, perhaps even doubling that volume. With its reconstructed mass, the Siletz (Crescent) Terrane could’ve influenced the N. Cascades.
How much money and where is it gonna come from if I want a PHDin geology? I will Google it, because I know I will not get a right answer, thank you again, y'all are awesome!
How can an accurate age of any given oceanic derived terrane be determined without considering the subducted portion, which could be nearly all of its former mass? Without the accurate oldest date, you can’t make accurate models. Only high resolution seismic tomography (which doesn’t yet exist) could resolve the length of a subducted mass to uncover the missing data not currently being considered. Take the Siletz Terrane for example; current data has indicated it’s @48-56ma, but even that data stems from accessible points. Siletzia and other oceanic Terrane’s oldest stages were subducted, and depending on how much/how far, could’ve been x-times its reported ages, thus placing its nature and influence in present models into question.
My afternoon on Blue Mountain. On a low cloud heavily overcast day my hiking mate and I drove up to the top thru the clouds. 400 feet from the peak the cloud cover broke into Carolina Blue clear skies. The view looked like numerous rock hills towering over a snow covered plane...impressive!
That opening shot where you were slowly turning around with the camera while doing your introduction was really impressive. You're getting better at this with every video Nick!
A bit of a flex showing the stupendous scenery he has access to 😋
Nice to get outdoors with geology Nick virtually, it’s the best I can get presently. Thanks.
Ohhh. The scenery. That rarified air. And yes, the Geology! WHAT a Terrific Trio, this. Remembering lectures you've done on the mish-mash of collision and subduction on the Olympic Peninsula and coast. Going to search my saved videos to review those. Thanks so much!
Years ago my father was an aeronautical engineer for Boeing. He always loved the Olympic Peninsula; when we came out to stay for the summer, we traveled there too. I recall Lake Quinault ( though not sure where we would have stayed ).
A professor out in the field showing how a profession introduces the next generation to the intoxicating potential of discovery.
Isn’t this a cutting edge kind of scenario?
Pretty good, Nick. ❤
Great Job Well Done.
Thank you Nick. The only reason I can follow what Erin, Mike and Ken are speaking about is because of you. Following you I have learned so much Geology
Thanks Nick, I've been hoping for something like this on the Peninsula. And I'm a fan Boy for Erin.
Love it! Great seeing all these areas in WA that I've never ventured to, and the stories of all these places (BIG ROCKS), that beautify the sunsets in Seattle. Thank you for bringing us along!
Thanks for an explanation of work that is being done about 12 miles from my home. I look forward to Erin's and Mike's dating results in respect to the Crescent and Blue Mountain formations and furtherance of the formation relationships to each other in their story development.
I don't pretend to understand everything the team was saying (there are a lot of big words), but I think it's great they way they approach their own understanding of what the earth has gone through over many millions of years. They make an observation, form a hypothesis, and then try to disprove it by coming up with other possible explanations for the original observation. Then, hopefully there is a consensus among their colleagues so they can form a theory. They are scientists looking for the truth in the rocks.
Quite a bit of "inside baseball" terminology for a non-geologist, but I was able to follow the general drift of the conversation, and the scenery, of course, is spectacular. As a retired teacher (history, high school), I enjoy watching the old hands guiding the relative newbie through some of the details involved in field work, and the implications therefrom. Well done, professor, and technically, that 360° pan during the introduction was impressive.
I was wondering how they kept saying "lithofeces" with a straight face until I looked it up. ;-)
Love learning more about the Olympic Peninsula. Washington state has such diverse geology
My lady and i just explored ONP the beginning of August. SO lovely!
Great to see another part of Washington that’s pretty different from the other side of the cascades. It’s even better to hear the explanations and theories as the other geologists discuss their findings. We really enjoy this way of learning about a place we’ll probably never visit. Many thanks to all of you for sharing . 🐻
always fun to see you Nick with more geologists and explanations of the rocks they see for all of us. Thanks to all of you.
Thank you Professor Zentner
You guys are way up there, I noticed the Noble Firs. Good to see Erin Donaghy and Mike Eddy you ALL make a great team thank you stay safe thank you
Fun times w the gang plus one. I so love the hikes, Nick.
Interesting vid. Solving these structural problems may be difficult given the terrain, but it's certainly easy on the eye.
Nice to see Mike and Erin again and to hear about their continuing work!
Spectacular... the view, and the knowledge.
Finally had a chance to watch this and it was great! Perfect scenic video that I love. Amazing landscapes! Thanks Nick.
Moving into autumn sees us looking forward to this year’s ’A-Z’, Baja-B.C., but I’ll miss these summer jaunty lessons you’re so generous to offer us all … thanks, Mr. Zentner. See you in class ‘virtually’.
These are my old stomping grounds; you can see my old place from Blue Mountain and I've hiked up Deer Ridge to Blue Mountain more than I've used the Deer Park Road to drive up.
- Blue Mountain is nice, but I'd love to hear you wax on about Mount Angeles and the Klahane Ridge.
Great you could squeeze this one in RIGHT before starting 101 the next morning! Fascinating learning with these guys and reinterpreting what they just learned.
Thank you Mike and Erin, really appreciate the proficient and clear way you convey the ideas and thoughts so even some of us armatures can follow along! Thank You! 😊
I will have to watch this multiple times. I just finished listening to your podcast on this visit. I am still trying to visualize the sequence of events. It's good to be challenged.
This is my backyard! Nick, at the 44:10 mark, Michael is pointing out a river valley and an area that looks clear cut. This is the Dungeness River valley and the river runs at the base of that hill. Interesting that the Elwah fault runs there too. The clear cut area is actually a rock quarry, one of the only ones in the area. I wonder if there might be some exposures there worth exploring.
Thank you for sharing important research in action in real time. It is like we are there with you on top of Olympic Peninsula in person.
Interesting geology, and what a beautiful place.
Breathtakingly beautiful!
Glad you enjoyed my backyard! The Olympic Peninsula is my home. I have hiked, biked and camped in almost every spot on the peninsula. As a kid my family camped at Lake Ozette and we were able to visit the archeology site of the native village that was surveyed and studied by the WSU archeology department. That dig was the source for the Makah Tribal Museum artifacts. I’m grateful you have stopped by my neck of the woods to explain a little more about the geology of the area.
Cool! Another video! Part of me wonders if some of the weird geology of the Olympic Peninsula is due to Siletzia coming in hot and causing earthquakes and landslides as it did, then dumping lava all over and creating faulting and inter bedding in the havoc. Thanks, Nick for meeting up with these three and getting them to clarify stuff as you all went along. Sure helps us newbies understand better some of the current and proposed ideas of Olympic geology!
Thank you Nick. A nice surprise.
Thanks Nick for always surrounding yourself with people smarter than you.
Thank you Nick and team.
I just finished listening to your podcast this morning--I'm glad you've posted this complimentary in-depth video. It's really cool to see geologists in action 😃
Thank you Prof Nick for sharing your last free day of the year with us. Looking forward to the in-class sessions where you put all the info you've gathered together!
Hello Nick. I am a dude that lives in SoCal, I work at a market. I got interested in geology two or three years ago when I started hiking instead of biking, for a bunch of different reasons. I found your TH-cam channel and I love your stuff. I love the content and the way you present it, and I love your personality, it helps me to absorb the material. I feel that you are truly a good educator in that regard. I respect that in all of the greats, and you are pretty darn good. Thank you for that. I have a specific question. I have been observing fossilized mollusks in a few locations locally here. I have gathered loose samples, and there are many better samples that I have not wanted to disturb. My question is, do you have a recommendation as to how I can contact a knowledgeable local geologist regarding specific local phenomena. A person that I could ask questions, and share the information that I have found. I have tried to Google stuff with my local community college, to no avail. I just wondered if you know specific geology people that could direct me. Thanks
It's good to see some of the Olympics where i used to live and I'd love to go back there soon. 9:49pm
Thank you Nick! Beautiful video interesting dialogue. Thanks to all. 🎉
Cannot wait for the classes
I'm SO happy to be a small part of this.
This is fascinating. I live in this area and now have some new perspective. Thanks Nick!
There is quite an exposure of different rocks types and formations on the ridge northwest of Buckhorn Pass, west ridge of Copper Creek. Quite a mixture all in one place.
What a beautiful area. I’ve explored the area several times. Now I know a bit more about the guts. Thanks.
Went up Deer Park Rd in early September. Fun drive up and great views up there. Great exploring for this former geologist.
Excellent as usual…Thank you
Great seeing them again! On my vacation I stopped and picked up rocks seberal.times in W Virginia and Virginia that was at the top of the mountains that were all just layers of sandstone, mudstones, and shale. So having seen it, I can understand this formation. Great stuff! But what I saw was layers, not as pillowed as this. Just hard to believe how mixed Washington is allover the state. I wonder if history will ever be able to describe what happened from Yellowstone to the Pacific. I guess BC really is included. Too bad T-Rex did not leave a diary! LoL
Seems siletzia would squeeze out basalt as it slid into place then more basalt as the Yakutat got split off and sent north.
Oh my gosh! I was at Blue Mountain on my birthday! But it was smokey and cloudy. AND I really wished I was with a geologist to interpret the mudstones, fault, and everything I was seeing. Thank you!!!
It's one thing to look at maps, another to be able to see it in person, yet another to get the interpretation of the features! Nick, I like hearing the ages of the rocks/formations you go to. It makes me realize the whole West Coast of N.A. was going through accretion and exhumation 55>Ma. Nice that you, Erin, Mike can break the big concepts into common speak for us mere mortals! Thanks to all. PS, Was S.A going through the same accretion changes?
Hello Prof.glad to watch you again
Best quote of the video. " it's OK were just looking at rocks" Erin Donaghy
That's crazy that the semester starts so late up there. I was always back in college the final week of August. Love your content, keep up the great work
I think that CWU has quarters not semesters for classes. They have fall, winter, spring, and summers terms.
Gosh I got so lost in that video that I was surprised when it ended.. What a great little adventure that was.. Well time to get the clean clothes out and polish the rubber boots.. Thanks brother.. as always never a dull moment at Nick's rock emporium.. Carry on!
⛏⚒🪣Great video, now I want to get my own samples from the Olympic Peninsula for study. 👍
Thank you.
I was beach combing northwest of the Kingston ferry at the public beach there and found bedrock at the base of the cliffs.
Right up the hill. Welcome!
Undersea volcanos formed this land many many millions of years ago. Two tectonic plates crashed into each other (underplating) forming the landscape you see today. It still going on BTW. Of course there is a little more to that story
and thanks to Nick , as he brings us again two geologists who can explain it all. Thanks to Erin and Michael for the
explanationsand discoveries of the penisula's special attributes.
.. did 2 tectonic plates crash, or was SiletziaCrescent lava lump part of the farallon ocean plate going under NAmerica at Seattle old coastline but got at 20km too thick so farallon stalled and the
thinner 10km oart broke off under midWA in northerly Line from medford to Canada and the thick lump from Seattle to current coast got added as a shallow sea 100km wide til 10my later subduction now offshore started jamming mud under it ""underplaying" and raising it a bit except Olympic Mountains extra underplaying raise the lava lump edge to vertical, elsewhere like all Oregon normal sedimention from 1000 creeks filled in 10km in the shallow seafloor and subduction rumpled this sediment a bit .... Just saying sediment from land over m.years and muds cover m.y are sorta more of the story.. except without a shallow seafloor the ocean currents sweep any creek mud await to Alaska ha.....
The term is underplating.
I love this so much!
Really enjoy seeing Erin's journey working on her PhD.
Very nice and the observatins were excellant!
Thank You!
That's so trippy that they find ancient oceanfloor landslide, and or, river sediment deposits, from many millions of years ago, up in the Olympic Mountains. lol.
The hike up from the supduction zone and then dragged along the shoreline and rolled around and intermixed. We see order, but the universe is chaos. Just on time scales so large that we cannot fathom them.
Compliments for the quality of sound and images.
is it possible to get LIDAR in the forested area ?
The comments at 48 minutes about sediments you want to see always being under jungle cover, are what make me appreciate being a geologist in Nevada. Our rocks are on display.
I'm seeing, Erin as the next rising star of Geologists once she's got her phd.
The more I see the more I want to learn
it would be amazing to drop a gopro there, and do a time lapse...set to 50 million years, just to see it change.
That's pretty interesting how a PHD can present findings that counter previous thinking. We still need geologists, I guess. Thanks guys cool stuff.
My favorite part of the state
Nice!
Another late night upload 👍
Is Nick the best teacher in our country? anyone know?
For those who lack a geologic background like these insiders, here is an excellent video that explains the geology of the Olympic Mountains in everyday English, aka the 'Common Tongue':
th-cam.com/video/bxgV8m8AK6M/w-d-xo.html
Now you can follow what they are talking about with at least some vague understanding.
Following your foot steps was there on Thursday
I suppose it might look "forever" from the initial camera panorama, but for the smoke haze prevented us from seeing Vancouver Island, across the JdFuca Strait.
I suspect Victorians have the better view, being that VI is boring logged over hills, compared to the dramatic glacial peaks of the Olympics.
How does the OWL play into this story. Were you able to see the basalt outcrop at Tongue Point/Crescent bay while you were up on the Olympic Peninsula? Growing up in Port ANGELES the geology of the Peninsula is fascinating. The entire Pacific Northwest is amazing.
I lived in Pac beach 74-77 I remember constant rain, sure looks dry?
are there plans to date the lower crescent ?
Greetings from the BIG SKY.
At .... 45:25 to 45:40... M. E. chuckles and smiles. This sounds familiar. Was this something written or said ( in one of your video interviews several years ago), regarding USGS geologists working decades ago...in Alaska? So Nick have a great Fall Quarter Sir.
He IS already a professional
❤️ Foraminifera!
Was that a fruiticose lichen on the corner of that rock sample? Was it Usnia Hirta?
I used to bear and mountain lion hunt with hounds on that mountain when I was young with my friend and family before this state outlawed hound hunters pretty sad I sure do miss hunting but now I get to learn about rocks enjoy the videos keep it up thanks
Hey Nick, can you do a video about the formation of Hudson Bay/Nunavut and how it relates to the end of the ice age? Or post links or references to learning material?
❤
Clam fossils to the south at upper Little Quilcene drainage
With the Siletz (Crescent) Terrane’s alleged influence to the N. Cascades, it must’ve been x-times it’s present volume at that time before mostly subducting. The terrain of the Crescent Terrane around the Olympics and Victoria Island couldn’t have had any influence in its present volume/state; indeed, it itself was the Terrane that became deformed and thrusted by less dense accretionary wedges from the West. It appears to be just a sub-surface sliver of its former mass, and should be reverse engineered to account for its alleged influence.
Using the present @50 mile wide mass of Siletzia off-shore of its center @Newport, OR. (Siletz River,) and 200 miles long- @Tillamook to Vancouver Island, the area of the lost Siletz Terrane mass would’ve been no less than 10,000 square miles x-the 30 mile depth of the Terrane. Of course, that doesn’t account for the lost leading edge, perhaps even doubling that volume. With its reconstructed mass, the Siletz (Crescent) Terrane could’ve influenced the N. Cascades.
Golly, (as some of us, still say in the UK)
Did you make it up to Slate with Ralph Haugerud?
likingandcommenting to appease the algo-deities of the tube-u-all
NICE
How much money and where is it gonna come from if I want a PHDin geology? I will Google it, because I know I will not get a right answer, thank you again, y'all are awesome!
How can an accurate age of any given oceanic derived terrane be determined without considering the subducted portion, which could be nearly all of its former mass?
Without the accurate oldest date, you can’t make accurate models. Only high resolution seismic tomography (which doesn’t yet exist) could resolve the length of a subducted mass to uncover the missing data not currently being considered.
Take the Siletz Terrane for example; current data has indicated it’s @48-56ma, but even that data stems from accessible points. Siletzia and other oceanic Terrane’s oldest stages were subducted, and depending on how much/how far, could’ve been x-times its reported ages, thus placing its nature and influence in present models into question.