already watched all these but its great to revisit them, thanks for uploading them to your channel, I had been following your work for years, and only a month or so ago realized you had started live streaming, I've since caught up on all of the episodes finally and I'm ready to start watching the live ones once you start doing them again, thanks for all the knowledge you share in such an easy to digest and fun entertaining way!
From White Salmon/Bingen, look up the hill to the Northeast. Splash lines! When Beneventi's Pizza & Sandwiches (on Hiway 14/Stueben Street) is open, get a window seat, and watch the cows navigate that slope.
Wow Professor Zentner, that was a great and dynamic lecture. I loved all the cartoons, and visual aids that supports the data. I am learning so much from you about this state that I have lived in so long now and never knew a thing about geology, I have watched all the 101 series, and some of the backyard series, I am working on them. Your 351 series are harder for me, but i sure do thank you so much for all the live streams and videos. I am more interested in real things like this than TV. tHanks from the bottom of my brain.
Geez.. I thought you were going to say there's a chance that great earthquakes were caused buy great landslide.. ;-) Back in the 70's they charged me a dime to walk across it.. I told the fella if I fell off I was coming back to get my dime! Outstanding I love to watch these over..
Enjoyed the presentation. Left me with the following question. Could the volcanic activity of Mount Hood play a role in the damming of the river? Could the seismic forces generated by the volcanic activity be enough to trigger the landslide? The last eruption was stated to be in the 1790's, which is just a few decades before the Lewis and Clark expedition (pubs.usgs.gov/fs/2000/fs060-00/#:~:text=Mount%20Hood's%20last%20major%20eruption,Mount%20Hood%20will%20erupt%20again).
When you talk about the Columbia river, I wish you would say, "Here comes the Columbia River, out of Canada, stops for an hour or two at Customs, before flowing back nd forth and taking a sharp right turn .... "
Perhaps there was a large 1450 AD +/- earthquake not related to subduction (east of the Cascades?) that was big enough to trip turbidite flows (and the BOTG landslide) but not large enough to trigger a huge tsunami that would be recorded in coastal sediments?
45:30 Does this animation imply the sierra Nevada Mountains would, over the course of time lose the dramatic heights they currently have? A sort of slow, Ironing-out of a mountain range?
That happened to the Ouachita Mountains that once snaked thru Texas from Eagle Pass up thru the Hill Country to DFW then curved thru Oklahoma into Arkansas and beyond. It's roots are still visible in Oklahoma and Arkansas with a few nubs above ground in the Hill Country and by Eagle Pass. The rest eroded away to be covered by thousands of feet of sediment. At one time those were as tall as the Rocky Mountains. You can see where those ran by looking at a map showing the producing oil and gas wells that have been drilled so far in Texas. It's a strip of land running thru the state where no producing wells have been drilled.
If you want a correlation between an earthquake and a landslide, look at the destruction of the mountain in the Madison River canyon in 1959 south and west of Ennis, Montana.
