#OnThisDay Sept 22, 1939: A streamlined Chicago & North Western Railway "Twin Cities 400" passenger train crosses the Stone Arch Bridge to Saint Paul, so named because it made the run to Chicago in 400 minutes.

For the scientists youtube.com/shorts/AYm9w...

This happened to me and I thought I was witnessing the start of the next Ice Age

Phase Changes xkcd.com/3144/

#MinCup25 Round 2 Match 7: It's high-pressure #kyanite against deep-space #taenite. Vote: www.mineralcup.org/2025/vote/r2... Results: www.mineralcup.org/2025/results...

6/ But then his voice goes up a bit. “But HEY. You need to come down here. You’re on Medicare & Social Security, right? You can join this program, Silver Sneakers” - our senior fitness program, “insurance covers it for nothing. They have showers here, for six bucks a month you can get towels.”

#kyanite in biotite gneiss from the Entia Dome, central Australia. Kyanite forms deep in the crust before it makes its way to the Earth’s surface, a slow and much more challenging journey than taenite’s fall through space. #MinCup25

Happy Equinox, everyone.

First day of the third field trip to Turkey for Paul Botté and @benjaminraynaud.bsky.social. One week to collect their last samples before their ultimate task: writing their dissertation!

NASA has announced its newest astronaut class, and it includes Lauren Edgar—a bona fide geologist! She joins Jessica Watkins as the second (to my knowledge) geology-trained scientist currently in NASA's astronaut corps. This bodes super well for going back to the Moon and on to Mars!

#Molybdenite accommodates transition elements, and its isotopes record age. Its transition element chemistry changed after the Great Oxidation Event. Molybdenite recorded the progressive influence of atmospheric O2 on crustal chemistry. #MinCup25

Midway through this round, beautiful, green desert beauty #Dioptase is cruising with a big lead, but don’t sleep on this chance to learn more about geochronometer #Molybdenite, which is just an amazing entry and tells so much about Earth’s story. #MinCup25 Vote: www.mineralcup.org/2025/vote/r2...

🚨Job Alert! 🚨 Lecturer, The Open University. #sedimentology, geological time, #palaeobiology, paleoenvironmental change / palaeoenvironments, #geosciences challenges and resources. ⚒️🧪 #geology

A swimming 🏊🏽‍♀️ race was held in the war torn city of Kosovo *Cough again* I mean #Chicago in our Chicago River this morning 🌞 for the first time in nearly 100 years! 🙌🏽 I’m not swimming in our river, but this is very cool!

If you have two followers, you are ahead of half of all Bluesky accounts. If you have 400 followers, you are in the top 1%. bsky.jazco.dev/stats

The Goodhue County Historical Society tops my list. Not only do they feature some of my favorite megafauna specimens—like bison, mammoth, and giant beaver—but they also offer an array of historical, archaeological, and regional displays highlighting the cultural and natural heritage of Red Wing.

Commemorative map of the Jefferson Highway routes in 1916 and 1929, as seen at the Hubbard County Historical Society in Park Rapids, #Minnesota. Park Rapids is one of the towns along the route.

Finally! 🤩 Our position piece: Against the Uncritical Adoption of 'AI' Technologies in Academia: doi.org/10.5281/zeno... We unpick the tech industry’s marketing, hype, & harm; and we argue for safeguarding higher education, critical thinking, expertise, academic freedom, & scientific integrity. 1/n

Tré-la-Tête Glacier 1990s | 2025 Demise of the most 'secret' (fact already emphasised by Whymper in 1909!) large glacier of the Mont Blanc massif! 🏔️ 🧊 The icefall no longer exists and most of the left tributaries have broken off! 🔥 📷 Cesare Balbis and Lauriane Miara

The amazing Roman pharos (lighthouse) at Dover, still standing after almost 2,000 years! 🤩 The tallest surviving Roman structure in Britain, and one of only three surviving lighthouses from the former Roman Empire! Dated 1st-2nd century AD. 📷 by me #RomanSiteSaturday #Archaeology

Current* conditions near Sault Ste Marie, MI:

Any geologists or chemists on here who could explain some x-ray diffraction concepts to me? I am in the midst of my crystal structures unit in my earth materials class, and my students have some very good basic questions about instrumentation/data processing. Thanks in advance!

outside the detention/“processing” facility in broadview, illinois: a crowd of protesters, some of whom showed up before 5 am, is heckling ice agents arriving to work. a few minutes ago, special response team agents came out to push protesters away from the driveway. pepper balls already flying.

Finally checked out the Alebrijes on Raspberry Island in St. Paul this weekend. So so cool. Go check them out before they leave in October if you haven’t yet.

For #FossilFriday, one of the oldest known animal trace fossils interpreted from the geologic record (~565 million years old) preserved as a tiny trail on a bedding plane at Mistaken Point, NewFoundland (Canada), investigated during a 2012 visit by our hero, Paleontologist Barbie. 🧪🐾🪨⚒️

Reposting this Permian trackway in #Canyonlands NP for #FossilFriday in the hope that somebody knows something about it. ⚒️🧪

AECOM is seeking an experienced Senior Paleontologist to join our Cultural Resouces team. This is a full-time, hybrid role that will report to our California teams and candidate should be Southern California based. jobs.smartrecruiters.com/AECOM2/74400...

#MinCup25 Round 2 Match 3: It's a heavyweight match between industrial powerhouses as soft #baryte competes against rusty red #hematite. Vote: www.mineralcup.org/2025/vote/r2... Results: www.mineralcup.org/2025/results...

[July 12th, 1980] Sylvester Stallone photographed by Andy Warhol at the Monte-Carlo Beach Club

Smithsonian Institution Fellowship Program: graduate students, predoctoral students, postdoctoral researchers and senior researchers can conduct "independent research related to Smithsonian collections, facilities, and/or research interests of the Institution" Due date Oct 15, 2025.

timeline cleanse: franky watches the garbage truck pick up the trash this morning

Got both a Covid and a flu vaccination yesterday 💉💉. I've got people around me who need to be protected.

Great article with comments by @diegosismologo.bsky.social, @acarrerac.bsky.social, @seismo-steve.bsky.social and @judithgeology.bsky.social. Though the tsunamis weren't as massive as past events, people evacuated because of timely warnings and accurate forecasting of when/where waves would arrive.

Sodalite-rich portion of lajuvrite from Ilimaussaq, Greenland. Large, euhedral (isometric) sodalite crystals are black in XPL. Interstitial aegirine augite shows green masking over strong interference colours. Collected by the late Henry Emeleus #ThinSectionThursday 🧪⚒️

#MinCup25 Round 2 Match 2: It's all about how minerals interact with humans as dramatic #stibnite faces off against futuristic #perovskite. Vote: www.mineralcup.org/2025/vote/r2... Results: www.mineralcup.org/2025/results...

Stibnite: Cleo-fuckin-patra almost certainly used it. Perovskite: not even a real thing. Like 700 different minerals under a trenchcoat structure all called the same thing. Vote stibnite, vote early, vote often for stibnite, for Perovskite is just lies in mineral form.

#Soil section from Naefurholt, Rangárvellir, South #Iceland (Jarovegssniò viò Næfurholt á Rangárvöllum) shows ash layers, mostly from Hekla and Katla, going back to time of settlement. National Museum in Reykjavík. #volcano #geology ⚒️🧪

Mantle Model xkcd.com/3141/

*looks up from holiday mode* oh! we're in round 2 already!! Soz for being remiss on posting the lovely structures for a while. So..... Pollucite v Haüyne.... This IS TOUGH. Both lovely extended structures. I'm going to keep to hot mess Haüyne for today

258 of #365Minerals 🧪⚒️ Agate: - A banded microcrystalline variety of quartz - Various colours are caused by impurities - Forms in cavities in volcanic rocks - Named after Achates River (now called Dirillo) in Sicily, Italy #minerals #MineralMonday

Job alert: #postdoc position in High-Precision U-Pb Geochronology, Pacific Centre for Isotope & Geochemistry Research, (UBC) Canada. Apply by 15 October or position open until filled. More info: buff.ly/eSyPl6P

#Job Alert! UT Austin is opening applications for Assistant #Professor (tenure-track) or Associate Professor (tenured) in #Sedimentary #Geosciences Apply here - apply.interfolio.com/173688 or send your inquiries to @rowanmartindale.bsky.social #sedimentology, #stratigraphy, #paleoenvironments

The amazing - and amazingly small - harbour at Seacliff in East Lothian. This was created in 1890 using a steam engine and compressed air to carve the harbour out of solid rock. More pics and info: www.undiscoveredscot... #Scotland #Seacliff #East Lothian

UNL is proposing to cut the Department of Earth and Atmospheric Sciences, which would eliminate the undergraduate and graduate meteorology programs. Please consider sharing the importance of our department with UNL through this link: apc.unl.edu/fall-2025-bu...

Research Associate (PhD position) in #mineralogy at University of Hamburg #Germany #geochemistry ⚒️🧪 #archaeology Research "to develop a strategy for tracing the firing history and initial phase composition of cuneiform clay tablets (the earliest written artifacts in human civilizations)."

Meanwhile, near Fargo #NorthDakota, adjacent headlines in the Fargo Forum (inforum dot com)

Oops

Lately, photographer Ragnar Visage started sharing video footage of past Iceland eruptions and I feel like no one sees it. Check out this video and his channel. So mesmerizing! ⚒️🧪 #Geology 🌋 youtu.be/aSOdrS2R3jA?...