Post AoDlDkYt2mxmS8aOcC by Lichtenbergian@mastodon.sdf.org
 (DIR) More posts by Lichtenbergian@mastodon.sdf.org
 (DIR) Post #AoDj7Ryl1OFzApYTnE by futurebird@sauropods.win
       2024-11-20T02:44:33Z
       
       0 likes, 0 repeats
       
       I can't get enough of "The Great Unconformity" I don't care if I've read it before, or watched it before if you are going to talk to me about this big gap in the geological record? I will listen to THAT forever. Talk to me about "glacial till" and "tillites" and "drop stones" Show me the way the sideways layers get sliced like a big pastrami sandwich. Be mysterious about "the massive gap in time!"Seriously. It's the most interesting thing in rocks.
       
 (DIR) Post #AoDjUmaKZhV3k6Fu76 by Apiary@mastodon.social
       2024-11-20T02:48:45Z
       
       0 likes, 1 repeats
       
       @futurebird i love the entire idea of glacial till. And the drumlins made of it.
       
 (DIR) Post #AoDjoSWyqRirL04SGm by superflippy@mastodon.xyz
       2024-11-20T02:52:19Z
       
       0 likes, 0 repeats
       
       @futurebird My son is taking geology next semester. I’m going to tell him to be on the lookout for this!
       
 (DIR) Post #AoDlDkYt2mxmS8aOcC by Lichtenbergian@mastodon.sdf.org
       2024-11-20T03:07:53Z
       
       0 likes, 1 repeats
       
       @futurebird This is one of my favorite realizations at Grand Canyon: that vertical white stripe is a sedimentary layer upended by tectonic forces and then eroded for millions of years while new layers were deposited — before eroded into the Canyon.
       
 (DIR) Post #AoENELEYUj6wRnmkRE by llewelly@sauropods.win
       2024-11-20T10:14:00Z
       
       0 likes, 1 repeats
       
       @futurebird technically, what makes the Great Unconformity so interesting, is that it is NOT in rocks.(I mean, at one time, some of it presumably was in rocks, but it got eroded away)