Ian
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winkelstern.bsky.social
Ian
@winkelstern.bsky.social
Rocks and stuff.
Assistant Prof, Geology, Grand Valley State University
bit.ly/winkelstern
Got some major new toys in the lab!!! 🧪⚒️ #waterisotopes
January 25, 2025 at 2:12 PM
#agu24 step totals. I'm going to go ahead and believe that the hiking offsets the extra liquid calories.
December 15, 2024 at 3:16 AM
I am live and in person in the dreaded Friday afternoon poster session. Come to 0648 to hear about Bahamas Last Interglacial climate. #agu24 ⚒️
December 13, 2024 at 7:18 PM
Congrats to GVSU undergrad Noah Valentine on their first conference presentation!

Still a chance to come learn about modern dolomite in the Keys at 0367 if you're in the poster hall. #agu24 ⚒️
December 12, 2024 at 3:24 PM
Congrats to GV undergrad Hugo Rainey on their excellent first conference presentation! #agu24 ⚒️
December 9, 2024 at 9:23 PM
Ran a winter field trip on the last day of classes I'm unstoppable
December 7, 2024 at 12:13 AM
Here's a picture of that tiny double peak at the top of MIS 5e. (Sea level rise-fall-rise.) San Salvador, The Bahamas.
December 6, 2024 at 12:36 PM
brb walking into the sea
November 22, 2024 at 5:29 PM
Students and Pennsylvanian plant fossils and rocks at Grand Ledge, MI today. A truly critical bedrock resource for every geo dept within 200 miles.
November 17, 2024 at 2:17 AM
Hello who wants to be a #geology major today? We have stickers.
November 12, 2024 at 4:35 PM
This is what teaching Jacob's staffing looks like when the nearest inclined bed is at least 200 miles away ⚒️⛏️
November 8, 2024 at 8:55 PM
If you see this, post a picture taken in the mountains.

Flagstaff last May. I shoulda cut that tree down for a better shot.
October 28, 2024 at 1:57 AM
Mapping glacial "bedrock" with my field methods class in the GVSU ravines today ⚒️
October 19, 2024 at 1:27 AM
Me telling my students to upload .docx files instead of Google docs links that don't work ⚒️
October 16, 2023 at 1:41 PM
Making good progress at work today
September 19, 2023 at 4:45 PM
Up North camping content
September 4, 2023 at 7:44 PM
First day on the tenure track for ya boy
August 28, 2023 at 1:43 PM
The Swell Season @ Meijer Gardens
August 18, 2023 at 2:16 AM
Hello app here is a hermit crab in a marine snail shell. Taken 1/2 mile from shore so she was walkin'.
August 15, 2023 at 11:41 PM