Episode #048: Meandering Meltwater Musings and Lake Agassiz
Kosmographia
Bradley Young
4.8 • 895 Ratings
🗓️ 15 October 2020
⏱️ 104 minutes
🧾️ Download transcript
Summary
https://RandallCarlson.com/links https://youtube.com/TheRandallCarlson https://youtube.com/geocosmicrex We look back at last week’s lesson on drumlins from guest Jerome Lesemann, marveling as it seems he did, at the “absolutely astounding” scale of the water-flushed features created at the bed of a continental ice sheet. Many questions remain about the source of the meltwater and the details of massive Glacial Lake Agassiz. Its release thru Big Stone Lake on the Minnesota River has left many clues that we can learn to recognize as features indicating megafloods in other locations. Relict flood channels with “misfit” rivers are difficult to explain with gradualist principles, so attempts by Dury that had to include a paleo-river that was much larger than the modern flow were early indications of a flaw in the Uniformitarian model. Then RC considers Washington’s Palouse Hills as analogous to some of Jerome’s crescentic forms, and finally, shares photos of an impressive site in the Okanogan Valley.
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#Megafloods #LakeAgassiz #MisfitRiver #Catastrophism #BigStoneLake #Geomorphology
Transcript
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| 0:00.0 | This is Cosmographia, the Ramble Carlson Podcast. |
| 0:07.0 | The Ramble Carlson Podcast. Oh, And welcome back, |
| 0:23.3 | back, |
| 0:24.3 | and the And welcome back, ladies and gentlemen, to Cosmographia, the Randall Carlson Podcast. |
| 0:39.4 | I am Russ and we are joined as always by the usual suspects. We got Mike the normal guy with us. Bradley |
| 0:47.0 | How you doing sir? Doing good? Yeah pretty good drove in from Atlanta today. So a little weary but I'm coming back. |
| 0:54.0 | All right. Yeah that's right you went you went down to visit with Randall and have some steak |
| 1:00.0 | go on some excursions. Yep. Tried out some new menu items at the Wheelhouse Pub down there and had a meeting with the |
| 1:08.3 | How-To Mike came in from Oregon. So, yeah, had a very productive weekend. |
| 1:13.0 | All right. |
| 1:15.0 | And Randall, I thought the last week show with Dr. Lesman was fantastic. |
| 1:21.0 | It was like a crash course and drumlands and subglacial flows and man it was amazing. |
| 1:27.3 | I knew it would be good. I knew it would be good. The man knows the stuff. |
| 1:32.5 | I thoroughly enjoyed it. I learned. The man knows the stuff. |
| 1:34.6 | I thoroughly enjoyed it. I learned some things. |
| 1:36.3 | And contrary to some rumors that are going around, |
| 1:40.8 | no, I don't know everything. In fact, as it turns out, I only know a very |
| 1:48.6 | small part of a small part of a small part of a small part of everything. |
| 1:54.8 | So, you're not making us feel worse. |
| 1:57.8 | I'm at least three orders of magnitude down the hierarchy from everything. |
| 2:07.0 | Everything. |
| 2:08.0 | Let's put it this way. |
... |
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