Rose Carlson
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rosecarlson.bsky.social
Rose Carlson
@rosecarlson.bsky.social
140 followers 250 following 15 posts
🌎 Earth & Planetary Sciences undergrad @ Northwestern. I ❤️ rocks, conservation, & deep time ⛰️🏕️🚲🧪🥾. Currently studying OAE2 🌊 in the WIS 🐚. Fan of stromatolites and sci comm. #ScienceIsForEveryone. She/her/hers.
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rosecarlson.bsky.social
My bike is temporarily out of commission, so I've been walking everywhere lately. This has become a serious problem because every five paces I have to stop and examine the ornamental specimens of dolomite that sporadically line Northwestern's paths. This one has a fossil! & burrow marks ⚒️
Closeup of dolomite surface featuring the fragment of a shell fossil. Wide shot of ornamental dolomite specimen (white/grey rock), about the length of a toddler. Shoes for scale. Burrow marks on the surface of an ornamental dolomite specimen. Burrows look like thin, indented lines.
January 25, 2025 at 11:47 PM
rosecarlson.bsky.social
#FossilFriday! Shrimp burrows (skolithos) in an outcrop of Oneata Dolomite (>400 million years old) near Rockford, IL. Top of the outcrop also glacially polished.

#fossils #dolomite #geology
Closeup of whitish yellow, granular rock with worm-sized burrows in it. View of outcrop from above, showing glacial polish (smoothed surface resulting from contact with rocks carried by a glacier), also with traces of burrows (marked by darker-colored rock) exposed via abrasion. Loose, small rocks of similar color also present.
December 14, 2024 at 1:15 AM
rosecarlson.bsky.social
#FridayFold: plastically-deformed phyllite at Point of Rocks, Baraboo, WI. Taken on the freshman year field trip that started it all. 🪨 #geology
Light gray rock with a bunch of waves in it that indicate large-scale smushing in the geologic past.
December 7, 2024 at 3:20 AM
rosecarlson.bsky.social
It's a stump, it's a rock, it's... BOTH??? Super cool specimen of petrified wood we ran into today while dropping my sister off @ OSU school of forestry. #RocksAreCool #GoBeavs 🦫🧡 #Geology
Something that looks like a tree stump but it's made out of rock!! Has a bunch of gray, brown, and orange streaks. The top looks like it's made out of light gray and brown rock. Moss on the side too. A closeup of the top of the petrified wood stump. Wood grain can be seen in the rock, as well as some deep purple, gray, and reddish-brown colors.
December 1, 2024 at 11:33 PM
rosecarlson.bsky.social
Fun #LateCretaceous 🌊 cameo in #Wicked! Elphaba's probably standing on a bunch of fossils here - these chalk cliffs are largely made up of the compacted skeletons of small marine orgs (phytoplankton) that lived in a shallow sea here (Sussex) tens of millions of yrs ago.
Wicked witch of the west, a woman with green skin and a black dress, stands at the edge of a white chalk cliff, singing with arms outstretched. Shot from the movie Wicked, image Credit: Architectural Digest
December 1, 2024 at 6:17 AM