North Britain Palaeogene Dyke Suite (Arran Tertiary Dyke Swarm) (66 - 23.03 mya) cutting through Auchenhew Mudstone Formation (252.2 - 237 mya). On the horizon, Ailsa Craig - an igneous pluton also dating from the Palaeogene period.
It occurs to me that, since the demise of Twitter and the half-hearted move to Mastodon, most of my communication on social media is only with people I know. My brain is currently actively calculating if this is a good or a bad thing.
I do miss old Science Twitter, however. Is that still a thing here or elsewhere in another form? Is everyone partying without me? Leads welcomed. #Science#SciComm
One of my favourite EO places on Earth: Yana river in Siberia! Look at this meandering giant. You can observe many geomorphic features here, like depositions, oxbow lakes, scars, cut-offs, etc. You can look into centuries of history here…
Annotated. There's a 52.5 ft difference between the Pleistocene high points & the river. You can see dissection of the uplands (lower left). The lateral channel migrations are tricky. The lower 1 is transitioning to a point bar migration, with the other 2 close behind. #geology#geomorphology#LiDAR
A lot of movement by Bayou Macon since it occupied the old Red River course. Not sure what is going on top center (red). There's a 13' change. It looks to me like the area between there & the west side might have been an old Pleistocene channel. #geology#geomorphology#LiDAR
Saucier (1994, Plate 9) shows the area as (Pve 4) Pleistocene Early Wisconsin age valley trains, (Hpa 4) Red River point bar & meander deposits, & (Hb) backswamp. #geomorphology#geology
3D LiDAR of part of the Crowville, LA, quad showing Pleistocene uplands & Holocene lowlands. The valley, now occupied by Bayou Macon, once was point bars & meanders of the Red River, & exhibit classic meander scars & dynamics. Note the meander abutting the Pleistocene. #Geology#LiDAR#Geomorphology