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Reposted by Vicky Veritas

Geology Johnson @geologyjohnson.bsky.social · 22h

3.2 billion year old microbial mats on one of Earth's first beaches. The dark wrinkles are the mats. This has been weathered, so the mat is easy to see. #geology #paleontology

Photo of yellow sand stone with dark green wrinkly microbial mats. The core is 6 cm wide.

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Henning @geohenning.bsky.social · 21h

Behold: Dutch geology in a 'sea'shell. ⚒️

My hand is holding one seashell half filled with sand.

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Robert Simmon @rsimmon.bsky.social · 19h

Antique #mapsincaptivity from the Stanford Library rare books collection. A highlight of the Barry Ruderman Cartography Conference.

Diagram showing evolution of Saturn’s rings from the perspective of Earth, by Huygens.

Diagram of the Earth-centered universe, by Copernicus.

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Anthony (Tony) J. Martin @ichnologist.bsky.social · 18h

More news about an incredible a Middle Jurassic (~170 mya) dinosaur tracksite near Oxford (U.K.), which includes one of the longest continuous dinosaur trackways in the world, made by a big sauropod. 🧪🦕🐾🪨 #ichnology

Richard Butler @richardjbutler.bsky.social · 23h

Back in June we were back on the Oxfordshire “dinosaur highway”, excavating more dinosaur tracks with our teams from the Universities of Birmingham, Oxford & Liverpool John Moores. The BBC have a story out today about our work at the site:

www.bbc.co.uk/news/resourc...

In the footsteps of giants - BBC News

One of the longest sets of dinosaur footprints in the world has been discovered in a limestone quary near Bicester, in Oxfordshire, England.

www.bbc.co.uk

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Ele Willoughby @minouette.bsky.social · 16h

Sharing #womenInSTEM portraits and bios for #AdaLovelaceDay #ald25 #histsci 🧪🐡👩‍🔬

Ele Willoughby @minouette.bsky.social · Sep 4

For the day 4 #SciArtSeptember prompt riverbank I am sharing my portrait of geologist & #paleontogist Alice Wilson (1881-1964) who mapped the Ottawa-St Lawrence river valley. 🐡🧪👩🏼‍🔬⚒️
⁠
After completing her BSc in ‘11 she was 1st woman offered a position at GSC & 1st female geologist in #Canada. 🧵

Linocut portrait of a young Alice Wilson with her hands under her chin printed in gold ink. Behind her is her own geological map of the Ottawa Valley with the different features on collaged translucent Japanese papers in raspberry, purple, yellow, pale blue, and beige in inks of similar but darker hues. “OTTAWA RIVER” is marked but the final R is obscured by her head.

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Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 16h

I don't know how many of you model carbonate (sedimentary) systems. But if you happen to, you should check out CarboKitten, which recently came out of Emilia Jarochowska's group at Utrecht University. 🧪⚒️🌊

(preprint with description here: egusphere.copernicus.org/preprints/20...)

Overview of different visualizations supported by CarboKitten. Panel (a) shows a stratigraphic crosssection, including an indication for unconformities, (b) a topographic overview including two intermediate time steps, (c) the production curves used, (d) sedimentation rate as a function of time (Wheeler diagram), (e) dominant facies as a function of time, (f) the sea-level curve given as input. The combined plot is arranged such that spatial data is on the top row, while time-dependent information is shown at the bottom with matching y-axes.

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Bill Lukens @paleosol.bsky.social · 15h

Bouma sequences, hot off the rock saw!

Upper Ordovician Martinsburg Fm. (Page Valley, VA) showing Ta-Tb-Tc. Sweet climbing ripples in the Tc.

Middle Devonian Millboro Fm. (Brandywine, WV) with Tb-Tc and silly, convolute bedding in the Tc and a nice weathering rind.

⚒️🪨🧪

A pale pinkish-white and hairy hand holding a gray rock showing the lower portion of a classic Bouma sequence. The lower 1/3 of the rock shows white, black and gray speckled medium sand finding upward (Ta), transitioning to fine sand in the middle 1/3 with planar bedding, and in the upper 1/3 there is fine to very fine sand with ripple cross-lamination.

A pale pinkish-white and hand holding a gray rock showing the middle portion of a classic Bouma sequence. The lower 1/4 of the rock shows black and gray streaks representing planar bedding to ripple lamination. The upper 3/4 of the rock shows ripple lamination transitioning into convolute bedding, consisting swirled black and gray sediments. An orange and speckled-black weathering rind is visible on the left and bottom right of the rock. A rock saw is out of focus on the right side of the image in the background.

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David Pyle @davidmpyle.bsky.social · 14h

Very sad to hear that Peter Friend has died.

Peter was a wonderful teacher and a lovely colleague, and first introduced me to the geology of Almeria in the 1990s for an undergraduate field class.

Here's Peter, still running the trip 4 years into retirement.⚒️

www.darwin.cam.ac.uk/news/dr-pete...

Photograph of two people standing by some rocks in a gorge, with vegetation in the background. On the left - Dr Peter Friend, on the right Dr Irene Gomez-Perez, in conversation by the Carboneras fault, Granatilla valley, southern Almeria, Spain in April 2005. Peter and Irene were co-leading a Cambridge undergraduate Earth Sciences field class at the time. @cambridge-earthsci.bsky.social

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Eos @eos.org · 14h

New high-resolution airborne data are providing novel insights for geologic mapping, critical minerals research, mine waste studies, and other applications. eos.org/features/new...

New Maps of Natural Radioactivity Reveal Critical Minerals and More - Eos

High-resolution airborne radiometric surveys are covering more ground than ever to provide insights into unseen geology, mineral resource potential, and possible health hazards.

eos.org

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Cody Mason @cosynomad.bsky.social · 12h

Wandering the woods in Manchester VT, and pondering these well-rounded clasts. I’m way above the modern floodplain, and these clasts must be fluvial gravels, not glacial till(?). I wonder how the pre-glacial landscape would have looked? Fun times in fall foliage.
⚒️

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John Cassidy @earthquakeguy.bsky.social · 11h

Not a bad view from the office today...
🧪⚒️🇨🇦
#VancouverIsland
#yyj

View of maple trees with beautiful red leaves set against the blue sky. The blue waters of Patricia Bay are visible, with the hills of Salt Spring Island in the distance.

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Howard Lee @hlee.bsky.social · 11h

"We will know as these datasets start emerging of how certain we can be about the extent of carbon removed" ⚒️🧪
www.washingtonpost.com/climate-solu...

Scientists seek to turbocharge a natural process that cools the Earth

Terradot, a carbon removal company, is using “enhanced rock weathering” to sequester carbon by spreading crushed volcanic rock over farmland.

www.washingtonpost.com

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Jason "Jay" R. Patton @earthjay.bsky.social · 4d

#EarthquakeReport for M 7.6 #Earthquake offshore of #Chile #Argentina #Antactica

left-lateral (?) strike-slip earthquake mechanism

in same location as 22 Aug '25 M7.5 earthquake: earthjay.com?p=12404

earthquake.usgs.gov/earthquakes/...

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Brandon Bishop @brandontbishop.bsky.social · 2d

"Unfortunately, we are not seismologists; our backgrounds are in geology and geophysics, and wiggles scare us."

The AY03 and BI05 records in the last figure should scare anybody, someone should probably go check on and fix those stations....

Dr. Judith Hubbard @judithgeology.bsky.social · 2d

October 10th was marked by two M7+ earthquakes on the same day - 14,000 km apart! How unusual is that? We crunch some numbers.

Also: what’s going on in the Drake Passage? 2025 has seen three mid-M7 earthquakes there, after decades of relative seismic silence. What can the limited data tell us?

⚒️ 🧪

Another mid-M7 earthquake in the Drake Passage

The third large earthquake to strike between South America and Antarctica this year

earthquakeinsights.substack.com

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KSircombe @ksircombe.bsky.social · 2d

It's ⚒️🧪 #EarthScienceWeek2025 !

Here's a new product from the awesome Geoscience Australia Education and Outreach team: a Year 8-10 classroom activity exploring critical minerals in Australia and their value through the lens of topographic data and the geology of Australia.

buff.ly/Y8v46nt

Map of Australia showing critical mineral deposits across the country. The map uses a satellite-style background with state boundaries labeled, including Western Australia, Northern Territory, Queensland, South Australia, New South Wales, and Victoria. Numerous colored squares and circles are scattered across the map, representing different types of critical minerals. High concentrations of markers appear in Western Australia, Queensland, and along the eastern and southern coasts near major cities such as Perth, Brisbane, Sydney, Melbourne, and Adelaide. The title above the map reads: “Analysing Australian geology, topography, and critical minerals using online datasets – Classroom inquiry activities.” A caption below states: “Map of Australia marking out critical mineral deposits (Geoscience Australia data portal).”

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Nadine, Haunter of Rocks 👻 @nadwgab.bsky.social · 1d

286 of #365Minerals 🧪⚒️

Sylvite:
- A potassium chloride mineral
- Forms in evaporite deposits
- The official mineral of Saskatchewan in Canada
- Named after "salt of sylvius" a digestive salt named after François Sylvius de le Boe (1614-1672) a Dutch physician/chemist #minerals #MineralMonday

A cluster of cubo-octahedral sylvite crystals, translucent and colourless. From Stassfurt Potash Deposit, Sachsen-Anhalt, Germany.

Specimen on display in the Natural History Museum, London.

A rock containing white and red patches of sylvite intergrown with grey halite. From Solikamsk, Russia.

Specimen on display in the Natural History Museum, London.

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Erika Anderson @andersonmineral.bsky.social · 1d

Some beautiful spherical ferrian turquoise, also known by the variety names henwoodite or rashleighite. #MineralMonday #GeoscienceBluesky ⚒️🧪

Small spheres of bright turquoise turquoise on dark brown matrix in cavities of a rust coloured rock. It sits mounted on a black shelf. At the Sedgwick Museum.

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Richard Gibson @richardgibson.bsky.social · 1d

#MineralMonday Topaz, red with rutile inclusions. 7 x 6 cm. Tepetate, San Luis Potosi, Mexico ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

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Kelly Hereid @kellyhereid.bsky.social · 3d

Mud volcano expertise, activated!

Kelly Hereid @kellyhereid.bsky.social · Mar 8

You know how the best thing in the Old Days was that like a flaming mud volcano would erupt, and you'd immediately have access to a world expert on mud volcanology?

1-He's here, @marktingay.bsky.social
2-Here's a professor of sand taking down a late night Dune analysis

This place has the juice.

Robert Mahon @bedform.org · Mar 8

Should I tell Neil deGrasse Tyson that you *can* in fact thump sand? I've got a PhD in sand, and I am a professor of sand. I have, in fact hit my hand on a sand dune and can confirm it can thump (if the packing arrangement is right)

www.youtube.com/watch?v=7Qlm...

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Mark Tingay @marktingay.bsky.social · 3d

⚒️🧪 Fiery eruption of Otman-Bozdagh mud volcano in Azerbaijan!

The Otman-Bozdagh mud volcano erupted at ~8:27am local time today (11/10/25).

Three eruption phases of between 4-12 minutes were recorded over an ~40 minute period.

Video source: @_yagha_

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Howard Lee @hlee.bsky.social · 3d

Glassy skin on a rope of pahoehoe basalt lava ⚒️

A shiny glassy skin on a rope of solidified pahoehoe basalt lava glistening blues and rust hues, silvery and dark brown.

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AC Vasquez - 安娜 @criskotsu.bsky.social · 3d

🧪🪨

Scientists develop interactive climate map to track invisible particulate matter pollution

A form of harmful air pollution that often can't be plainly observed is now being tracked with a groundbreaking new tool developed by scientists that allows residents to see where it's coming from.

www.cbsnews.com

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Matt Kuchta @mkuchta.bsky.social · 3d

Was at ground zero for true geography nerds today

The intersection of 45 degrees north latitude and 90 degrees west longitude. The middle of the northwest hemisphere.

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Cin-Ty Lee @cintylee.bsky.social · 3d

All hands on the great unconformity in the Sandias, New Mexico. Pennsylvianian limestones on 1.4 billion years A type granites. @riceuniversity.bsky.social geology trip.

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Geology Johnson @geologyjohnson.bsky.social · 2d

Back to Germany to do final sampling of the 3.22 Ga Moodies Group. I'll also be presenting for the first time most of the vast palaeontological data set I've collected over the last 2 years to the project Group. 1/n #geology #paleontology

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