I love the great geologic insights that Nick and Skye seem to generate when they get together. I believe that Skye meant dendritic flow patterns when he was talking about the paleo-drainages on the eastern flanks of the cascades. Excellent discussion!!!
I love this format of interviews we can watch in between episodes. Between that and all of the papers, I get to engage in geology every single day of the week! And Skye Cooley is definitely a favorite of mine!
Man, I love these exploratory background interviews. I so appreciate Skye's taking the time to create visuals (your's too Nick) to convey concepts. I've been curious about when the Cascades began to uplift since the first A-Z in 2020, but didn't grasp until this season how the mountains lifted up so recently. Has me looking at the SCF & other faults and the story of the Cascades with new awe. Cool to see Steamboat Mtn isn't far away from the PCT and there are a few other blotches of CRBGs nearby to the west. It isn't all Council Bluffs and younger. That's fine big tree country in those parts.
Trying to image all the different roots the Columbia River must have had going through the last 46 Ma. Great stuff, can't wait till Thursday. Something tells me there will be another zoom before then...
There are some neat CRBG exposures in the Clackamas River Canyon, and also along the upper Salmon River Trail and between Bluegrass Ridge and Lookout Mountain. Those are all beautiful places and I’m just now realizing how strange these CRBG outcrops are there!
It does look like Ty (Yakima Basalt) has been mapped atop Steamboat Mountain by folks in the mid-to-late 60s. But Steamboat is only 5425-ish feet high, so subtracting 2,000 or 3,000 feet to take away the topographic arch leaves us with 2400-3400 feet as the bottom of whichever flow. Maybe that flow could have overtopped the "range" at that time (depending on heights to the west)? My understanding is that Bethel Ridge is also German chocolate cake, but that's north of Hwy 12, so not sure how informative that is about the possibility of flows across the "range" into Puget Sound. In any event, you guys definitely had my attention to the end -- and count me a Calcrete fan, lol!
10 million years and rain shadow effect starts.I was under the impression it started way way earlier than that ,like 30 million years ago. The first thing that comes to my mind is the Cascades are not that high ,why wouldn’t the flood basalts cross over the Cascades range ,especially at its peak time ??? Man do I have questions .These flows are 16 million years old .I am thinking the flood basalts crossed over the Cascades . I am confused again because you don’t see the flood basalts on the west side of the Cascades.This is all new to me .This is great stuff . But I am looking for help here.
Gobsmacked! Thanks Skye and Nick. It makes sense to me that the CRB's would flow downhill towards the precascadian lowlands. Bump into low hills and stop, then those low hills rise and the CRB's erode down as elevation intensifies erosion. The >20my plutons would have been many KM below and uplift finally exposed them. My question would be; is this same uplift exposing the same timeframe for the Sierra Nevadas?
Skye WELCOME BACK! Wooohooo 🎉 Thoroughly enjoy the way you paint pictures with words. ❤ Also the fact that you both enjoy discussion and examination of these issues. Thank you 😊 really enjoyed this. I want a bumper sticker that says” I ❤ Calcretes “ 😂 Because actually I do!
They laid out a nice puzzle. The CRBs should have crossed the Cascades into the Puget Lowland based on inferred tectonic histories, but there seems to be a lack of evidence for CRBs in or west of the Cascades. Looking forward to learning more.
When Nick was talking to Gary about “Nick on the Rocks” potentials, I thought of Steamboat Mountain! Not in the wilderness so you can fly a drone, accessible, amazing views of adams and helens and hood and so much geology!
Excellent head-scratch material! I can't help but think that glaciation played a large part in the disappearance of the CRBs. Even though the cordilleran sheet didn't go that far south, much of the cascades must have been eroded by much larger alpine glaciers. Are there any areas that escaped glaciation completely? That would be my starting point for the search for hidden CRB.
When I went to John Day and walked their time-line hike, it was immediately clear that the cascade mountain range's age didn't match the 46 MYA age of the start of the cascades, that makes this a very interesting topic to me.
Great talk. And very relevant to the cascade series. However there was a lot of novel stuff here for viewers and hard to visualize. The talk was great bur lots here. Can you follow up with a visual based recap/summary?
I wonder if northern oregon cascades were passing crb's ? You have talked about the late rising in previous talks, Please, lets get into this, it could be - no, is a game changer. The paleobotany sounds interesting, I have to rethink my concept of the NW and what it looked like, and its inhabitants before crb time.
It's always nice to see Skye on with you Nick. It's was a great story but for me I did some evidence of any CRBs over hear in the westside to buy into it. Just saying
You piqued my interest about CRBs west of the Cascades. Steamboat mtn just to the south of the Lewis River would be a good candidate. It is tilted to the south. The uplift of the Dark Divide may have been the reason for this. It is a west to east ridge running between Mt St Helens and Mt Adams. The north side of the ridge drains into the Cowlitz River and the south into the Columbia via the Lewis River. I know there are basalts along the north side of the Lewis River as well. I don't know what the Dark Divide is composed of.
I had just posted a video to UA-cam ... a Valentine short... and posted the link on X Twitter... testing the link and guess who was suggested.... a new Nick video
Can’t get enough of Skye Cooley. Thanks for having him on.
I love the great geologic insights that Nick and Skye seem to generate when they get together.
I believe that Skye meant dendritic flow patterns when he was talking about the paleo-drainages on the eastern flanks of the cascades.
Excellent discussion!!!
Great discussion! Thanks Skye and Nick, it's wonderful listening to you figure out what the possible lines of evidence would be.
Great hearing from Skye, as always. My bro from the Flathead Valley. Thanks!
Wow !!
That was great!
Sky and Nick pulling it together.
I’m officially fired up!
Okay! You got my attention again. I learn more easily from these vignette videos than I usually do from the main event.
I love this format of interviews we can watch in between episodes. Between that and all of the papers, I get to engage in geology every single day of the week! And Skye Cooley is definitely a favorite of mine!
Skye Cooley. The man of the hour, bringing us out of the clouds and back to a level plain.
Thanks for all the hard work on these videos Prof. Zentner
Man, I love these exploratory background interviews. I so appreciate Skye's taking the time to create visuals (your's too Nick) to convey concepts. I've been curious about when the Cascades began to uplift since the first A-Z in 2020, but didn't grasp until this season how the mountains lifted up so recently. Has me looking at the SCF & other faults and the story of the Cascades with new awe. Cool to see Steamboat Mtn isn't far away from the PCT and there are a few other blotches of CRBGs nearby to the west. It isn't all Council Bluffs and younger. That's fine big tree country in those parts.
Big Skye Cooley. Awesome. Thanks for another great interview Nick.
Always enjoy Skye’s take on things.
Trying to image all the different roots the Columbia River must have had going through the last 46 Ma. Great stuff, can't wait till Thursday. Something tells me there will be another zoom before then...
I remember Mike Eddy was talking about the flow direction change in the Swauk due to the Cascade uplift.
There are some neat CRBG exposures in the Clackamas River Canyon, and also along the upper Salmon River Trail and between Bluegrass Ridge and Lookout Mountain. Those are all beautiful places and I’m just now realizing how strange these CRBG outcrops are there!
Entertaining those things that continue to make sense, even distantly related but possibly intertwined, is a good thing! Thank you, Nick and Skye.
It does look like Ty (Yakima Basalt) has been mapped atop Steamboat Mountain by folks in the mid-to-late 60s. But Steamboat is only 5425-ish feet high, so subtracting 2,000 or 3,000 feet to take away the topographic arch leaves us with 2400-3400 feet as the bottom of whichever flow. Maybe that flow could have overtopped the "range" at that time (depending on heights to the west)? My understanding is that Bethel Ridge is also German chocolate cake, but that's north of Hwy 12, so not sure how informative that is about the possibility of flows across the "range" into Puget Sound.
In any event, you guys definitely had my attention to the end -- and count me a Calcrete fan, lol!
OK, that's new to me! Thanks Skye and Nick.
10 million years and rain shadow effect starts.I was under the impression it started way way earlier than that ,like 30 million years ago. The first thing that comes to my mind is the Cascades are not that high ,why wouldn’t the flood basalts cross over the Cascades range ,especially at its peak time ??? Man do I have questions .These flows are 16 million years old .I am thinking the flood basalts crossed over the Cascades . I am confused again because you don’t see the flood basalts on the west side of the Cascades.This is all new to me .This is great stuff . But I am looking for help here.
Good morning from the PHILIPPINES!!!
Gobsmacked! Thanks Skye and Nick. It makes sense to me that the CRB's would flow downhill towards the precascadian lowlands. Bump into low hills and stop, then those low hills rise and the CRB's erode down as elevation intensifies erosion. The >20my plutons would have been many KM below and uplift finally exposed them.
My question would be; is this same uplift exposing the same timeframe for the Sierra Nevadas?
Skye WELCOME BACK! Wooohooo 🎉
Thoroughly enjoy the way you paint pictures with words. ❤
Also the fact that you both enjoy discussion and examination of these issues.
Thank you 😊 really enjoyed this.
I want a bumper sticker that says” I ❤ Calcretes “ 😂
Because actually I do!
Hello @Skye Cooley!
Another pleasant surprise this Monday!
They laid out a nice puzzle. The CRBs should have crossed the Cascades into the Puget Lowland based on inferred tectonic histories, but there seems to be a lack of evidence for CRBs in or west of the Cascades.
Looking forward to learning more.
Does this explain why snoqualmie falls is a basalt edge?
Further review on google says that snoqualmie falls basalt comes from Mt Persis volcanism.
👍
Thanks Mr Sky
Hahaha 3 viewers 😂
This is good stuff!
Steamboat Mountain is just west of Mt Adams. Basalt in that area could be part of the flood basalt or the Mt Adams volcanic field?
When Nick was talking to Gary about “Nick on the Rocks” potentials, I thought of Steamboat Mountain! Not in the wilderness so you can fly a drone, accessible, amazing views of adams and helens and hood and so much geology!
Well shoot, I got Steamboat Mt confused with Sleeping Beauty.
Love this stuff!
Excellent head-scratch material! I can't help but think that glaciation played a large part in the disappearance of the CRBs. Even though the cordilleran sheet didn't go that far south, much of the cascades must have been eroded by much larger alpine glaciers. Are there any areas that escaped glaciation completely? That would be my starting point for the search for hidden CRB.
When I went to John Day and walked their time-line hike, it was immediately clear that the cascade mountain range's age didn't match the 46 MYA age of the start of the cascades, that makes this a very interesting topic to me.
I feel like the John Day and clarno areas are such a key to understanding the elevation, climate, and waterlevels “behind” the early cascades.
Don’t Panic I’m still watching, I love this video 👍
Could right lateral strike slip movement create minor east-west compression ridges. Providing low valleys across the Cascades?
Great talk. And very relevant to the cascade series.
However there was a lot of novel stuff here for viewers and hard to visualize. The talk was great bur lots here. Can you follow up with a visual based recap/summary?
Fun to learn new concepts. Especially cool that you tell us what evil there is for your conclusions
I wonder if northern oregon cascades were passing crb's ?
You have talked about the late rising in previous talks,
Please, lets get into this, it could be - no, is a game changer.
The paleobotany sounds interesting, I have to rethink my concept of the NW and what it looked like, and its inhabitants before crb time.
Wow, instant notice
Late night to all people!
One question they didn't even ask - what caused the cascade uplift?
Another uplift in the "young" category: Teton Range south of Yellowstone Park, around 10Ma.
Glacial removal?
It's always nice to see Skye on with you Nick. It's was a great story but for me I did some evidence of any CRBs over hear in the westside to buy into it. Just saying
😎
Way younger than one thinks. Basalt west of but not related to the Colombia River Gorge? Thank you both
You piqued my interest about CRBs west of the Cascades. Steamboat mtn just to the south of the Lewis River would be a good candidate. It is tilted to the south. The uplift of the Dark Divide may have been the reason for this. It is a west to east ridge running between Mt St Helens and Mt Adams. The north side of the ridge drains into the Cowlitz River and the south into the Columbia via the Lewis River. I know there are basalts along the north side of the Lewis River as well. I don't know what the Dark Divide is composed of.
I had just posted a video to UA-cam ... a Valentine short... and posted the link on X Twitter... testing the link and guess who was suggested.... a new Nick video
So are the Olympics (Siletzia) older than the Cascades... an Olympic rain shadow before a Cascade rain shadow?
Excellent video
There must have been enough topography to constrain the CRBs but I guess that would not need to be high enough to make a rain shadow.
PLEASE REMIND ME - CRBSs??????
CRB?
Columbia River Basalts???
s
Columbia River Basalts = CRBs, if that's what you're asking.
CRB= Columbia River Basalt = “german chocolate cake”
Sometimes also referred to as CRBG = Columbia River Basalt Group
Hi. Had just restarted my device. Hello
This is too much to just be a single letter.
How far north has verified CRB been found west of the current Cascade arch? @Nick Zentner