Posted 8 years ago, I haven't searched the Missoula floods in half a year... and yet youtube somehow knew to pop it in my recommended feed today. Watched it and loved it! Saw some things I hadn't seen before. Thank you. Coincidentally, I also like jazz and new age music. The algorithm knows all. All hail the algorithm.
I grew up across the Columbia from Kalama and have cruised the entire river from Astoria to Hanford Reach, some sections many times. I've known about the great floods my whole life but learn something new with each presentation of this quality. My thanks to those who did such an excellent job here.
Wonderful videos, great explanations. I will watch them all. Thank you for sharing all this great geology information. Your photography is really amazing. Thanks again. 👏
Fascinating and wonderful drone video. Burlingame Canyon is a new one for me thank you. And incredible that it was formed so fast. Reminds me of some of the giant Canyons behind Mount Saint Helens which were formed in a single day.
If each rhythmite represents a separate flood then there should be a lot more volcanic ash deposits. Between Mt St Helens, Rainier, and Hood there have been four eruptions in the last 200 years or so.
It’d be great if Bruce got his hands on a 4K drone, with 20 megapixels or more. Also, it’s interesting that ripples show flow directions both toward and away from Wallula Gap.
Were these images made with a drone?? If so, VERY COOL!! Even if not, very cool video anyway!! THX for showing us. Are these rhythmites considered Latah Formation similar to those slackwater deposits in Latah Creek near Spokane? Do these contain leaf fossils and other fossils like the Latah does?
Yes, most of the images were collected with my drone. The rhythmites are much younger than the Latah Formation and contain very few fossils. The rhythmites were deposited during Ice Age megafloods. The Latah Formation was deposited in lake deposits behind basalt lava dams, many millions of years before the Ice Age.
Aha! Then Latah is Miocene. ~17 Ma?? :)) Thanks for clearing that up! I've seen the rhythmites near Zillah, Wa, and wondered what the heck caused them. Figured it had to do with Yakima River deposits. Now I know!! Yakima River on steroids! :)) I never knew about huge Lake Lewis!! By the way, is there archaeology found near the old Lake Lewis shores, or were lake levels too changeable? Are there discernable Lake Lewis shorelines? Are there dates on the rhythmites? So many questions!! :))
Yes, the Latah Fm is between lava flows so must be ~15-17 m.y. Lake Lewis only lasted for a few weeks after each flood so lake level wasn't stable enough to produce strandlines. An exception is near Sentinel Gap where there are some weakly developed strandlines (i.e., old shorelines). Mt St Helens "set S" ash that lies within the rhythmites is about 15,000 years old. Lower rhythmites may be as old as 17,000 years.
@UC5_xsL0dB1cUnYJdTT8ONbA I have discovered high water / ancient beach lines high up on Rattlesnake, Ahtanum, Yakima Ridges. Too high to be caused from Lake Lewis. I do have a theory that works and lots of sites where it is very evident.
This is great work! I wonder though, as I have several friends who live in this area and they tend to be fundamentalist conservatives, how one would explain all of this geology within the context of Noah's biblical flood and an Earth that is a mere 6,000 years old or so. We live in a time when it is quite acceptable to doubt or even denounce science whether it is geology, astronomy, climate, biology, etc. Being ignorant, it seems to more and more people, is much preferred to being 'woke'. I wish America and its happily ignorant populace well as it slides farther and farther towards the darkness of fascism as someday wonderful videos like this may be declared illegal since it contradicts the Bible. If you think I'm kidding, look what's already happened to math text books in Florida and the push to abolish public education..
Ripples indicate flood water flowed back and forth, as if it was slopping back and forth in the basin. This isn’t consistent with the idea that each bed was deposited by a separate flood event.
@@swirvinbirds1971 If the paleo current shows flow from south to north, and the bed is identical to those that have the reverse paleo current, that doesn’t indicate a separate Scablands flood came from a southerly Lake Missoula equivalent.
@@Robboa1 probably because these are laid down in slackwater deposits that backfilled into the basins. And you have some catching up to do if you think every flood came from Missoula.
