iiinova — where your digital self keeps evolving

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Kamil Ustaszewski @wukaimi.bsky.social · 24/10/2025

One more week to apply for a 2-yr postdoc job to work with @sumikotsuka.bsky.social (LIAG Hannover) and me @uni-jena.de to understand exhumation rates in the splendid #mountains of #Albania using #thermoluminescence #thermochronology on #carbonate #minerals in a new collaborative research program.

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Dr. Petr Brož @chmee2.bsky.social · 13/08/2025

Hey folks! #Geology often gets overlooked in schools Which is crazy, because it explains why the world looks the way it does – from #mountain ranges to the ground beneath your feet So I want to fix that! How? By making a new educational tool for cool experiments in schools <3

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Dominik Sorger @domsorger.bsky.social · 09/04/2025

Join us at the University of Göttingen as a Research Assistant in Metamorphic Petrology and explore the mobilization and fractionation of REE, Th, and U during crustal melting. 📌 Find the full job posting at domsorger.eu #metamorphicpetrology #monazite #garnet #rareearthelements #unigöttingen

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Kristina Dunkel @kristinadunkel.bsky.social · 13/03/2025

A serpentinite mesh texture for #ThinsectionThursday. Or is it a piece of modern art? 🖌️ Note how there are several generations of serpentine, among them a clear one that filled the first fractures, and a dark one (full of magnetite) that replaced the rest of the olivine.

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Cambridge Earth Sciences @cambridge-earthsci.bsky.social · 25/02/2025

There are many ways to study rocks up-close! 🔬💎 These thin section drawings and images are of feldspar-pyroxene xenoliths, brought up from beneath Fagradalsfjall, Iceland, by erupted basalts🌋 #ThinSectionTuesday #Petrology

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Jesse ‘Πέτρος’ Walters @thegeojesse.bsky.social · 22/02/2025

Announcing MinPlotX, an open-source software for mineral formula recalculation and compositional plotting with an easy-to-use stand-alone graphical user interface. The open-access paper is here: lnkd.in/eB4im8dh MinPlotX can be downloaded here: lnkd.in/eXMHtkkK #geology #petrology #minerals

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Etienne Médard @etiennemedard.bsky.social · 13/02/2025

Today I was teaching binary phase diagrams with a solvus to undergrads so here is a pretty perthite with a Carlsbad twin from the hypersolvus Tolla granite (Corsica) for #ThinSectionThursday ⚒️

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Etienne Médard @etiennemedard.bsky.social · 13/02/2025

I also got some pretty exsolutions in a norite from the Bushveld complex #ThinSectionThursday ⚒️

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Bob Gooday @bobgooday.bsky.social · 20/02/2025

Andesite from Bad Honnef, Germany. Some lovely wee zoned feldspars along with the augites and oxides. 1893 Krantz thin section from NMS collection. #ThinSectionThursday

A thin section photomicrograph of an andesite between crossed polars, showing white elongate feldspar phenocrysts, brightly coloured clinopyroxenes, and lots of tiny black iron oxides.

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Marie-Claude Williamson @mc-north.bsky.social · 13/02/2025

BSE images of a basalt clast from sample 2016Oden-D3, Alpha Ridge, Arctic Ocean, a volcanic breccia formed as the result of magma-water interaction 90 my ago. Think Kilauea lava bench deposit! Image B at yellow dot on A. #ThinSectionThursday #UNCLOS

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John Wheeler @johneclogite.bsky.social · 05/02/2025

The Metamorphic Studies Group Research in Progress (RiP) meeting and related events will be held in Liverpool, UK, on April 8-11th, 2025. Registration deadline is February 20th, 2025.; see the MSG website for more. metamorphicstudiesgroup.wordpress.com/msg-rip-2024/ Regards John

metamorphicstudiesgroup.wordpress.com

MSG RiP 2025

The Metamorphic Studies Group Research in Progress (RiP) meeting will be held in Liverpool, UK, on April 9-10th, 2025. Registration for the RiP meeting, the MAGEMin workshop (April 8th, 2024), and …

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Stephen Michalchuk @stephenmichalchuk.com · 04/02/2025

🚨 Hot off the press 🪨 ⚒️ Where do you come from, where do you go 🎶 fluids that is… after an earthquake in the dry lower crust? We look into this and more using SEM-CL, EBSD, EMPA, STEM, and FTIR! Hit the link below 👇 agupubs.onlinelibrary.wiley.com/doi/full/10....

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Jenna C. Hill @chillocean.bsky.social · 25/01/2025

Faculty and staff at Sonoma State University were just notified of the closing of the Geology Department - they are organizing an email letter writing campaign for Monday 1/27 to rally support - see below🧪⚒️ It’s awful to see the closing of another Geology department and big loss for the community.

Here’s how you can help:

On Monday, January 27th, we’re launching a campaign to rally support for the Geology Department. To maximize impact, we are asking you to email or call a list of influential community members (provided below).

We’ve included a template letter at the bottom of this email that you can use as is, or you can personalize it with your own thoughts and experiences—whatever works best for you. The most important thing is that you send something.

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Petrology group; Geoscience Centre, Univ Göttingen @gzg-petro.bsky.social · 22/12/2024

Looking for a PhD opportunity? Interested in #experiments and #petrology? Keen to join our team at the University of Göttingen? Then apply for a 3-year position to study #microstructures and #geochemistry of #mineral reaction fronts! Apply here: obp.uni-goettingen.de/de-de/OBF/In...

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Ethan Baxter @ethanrockstory.bsky.social · 11/12/2024

Spiral garnets are beautiful... and they record deformation processes during growth. Thomas Farrell used Sm-Nd geochronology to show these garnets from Spain grew in just a few 100,000 yrs! @agu.org #AGU24 👇Read the full paper here pubs.geoscienceworld.org/gsa/geology/...

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Fred Gaidies @fredgaidies.bsky.social · 10/12/2024

Interested in the transport properties and crystallization mechanisms of metamorphic rocks? @mtyogi.bsky.social will talk about it today at #AGU24 (Session V24B, room 207 A)!

Crystal size distribution and trace element contents of metamorphic garnet

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John Garver @geogarver.bsky.social · 08/12/2024

Radioactive decay is difficult to envision unless you have a cloud chamber. Here I use a piece of naturally radioactive monazite crystal (~25 cm) to produce very energetic alpha particles - a decay product - that ionize alcohol-saturated vapor. I use this in Geochron and Natural Disasters classes.

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John Garver @geogarver.bsky.social · 06/12/2024

Folds in metasediments on Barred Island near Englee in Newfoundland presumably related to Taconian deformation of the Hare Bay Allochthon. #FridayFold

Folds in a black sedimentary rock. Folds defined by white layers of quartz.

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David Pyle @davidmpyle.bsky.social · 06/12/2024

Volcanology- and petrology-inspired baking for the annual Oxford Earth Sciences bake-off, courtesy of Bei Bei, Rhiannon, Sofia and colleagues! ⚒️🌋🔬

Gingerbread cookies decorated to represent zoned and twinned minerals.

Vegan brownie tray bake decorated in the style of a thin section, viewed under crossed-polars. Baked by petrology and volcanology research students for the annual Xmas bake off.

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Fred Gaidies @fredgaidies.bsky.social · 06/12/2024

Are you at #AGU24 next week and interested in the kinetics of metamorphic crystallization? Come by and say hello to @mtyogi.bsky.social. Thereza will discuss the chemical mobility of trace elements in metamorphic rocks, as well as crystal growth mechanisms. agu.confex.com/agu/agu24/me...

agu.confex.com

<em>Crystallization Mechanisms and Extent of Chemical Equilibration During Garnet Growth in the Lower Kalak Nappe Complex (Finnmark, Scandinavian Caledonides) </em>

The microstructural and chemical characterization of crystal populations provid...

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Fred Gaidies @fredgaidies.bsky.social · 05/12/2024

Some crystal “flowers” for #ThinSectionThursday. These are microphotographs (PPL) of texturally sector-zoned garnets (!) from the incredible collection of Hugh Rice (Vienna).

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Bob McIntosh @scotfot.bsky.social · 05/12/2024

#thinsectionthursday #geology Graphic Granite from Brucklay Aberdeenshire @britgeosurvey.bsky.social Britrocks S29063 webapps.bgs.ac.uk/data/britroc...

Photograph of a rock thin section with a very regular repetitative pattern of crystal growth caused by the intergrowth of two crystals, quartz and feldspar. It resembles ancient cuneiform writing!

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Bob Gooday @bobgooday.bsky.social · 05/12/2024

Probably the best individual thin section ever produced. John Faithfull's slice of the olivine cumulate from Unit 5 of the Rùm layered intrusion. #ThinSectionThursday

Thin section microscope image showing a background of black, white, and very pale yellow plagioclase covered in a series of long worm-shaped olivine crystals, all showing bright second order birefringence colours like yellow, purple, and blue. They are all aligned down towards the right.

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Jesse ‘Πέτρος’ Walters @thegeojesse.bsky.social · 04/12/2024

New paper alert! Micas and chlorite show progressive recrystallization in a retrograde shear zone, demonstrating that pressure solution is the dominant deformation mechanism (followed by grain boundary sliding). Check it out here lnkd.in/gCqMxaJB #geology #metamorphic #rocks #minerals #science

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Zoja Vukmanovic @3oja.bsky.social · 03/12/2024

Reminder #EGU2025: If your research involves microstructure and focuses on igneous, metamorphic, or ore geology, please consider submitting an abstract. We have great invited speakers: Dr. Rüdiger Killian (University Halle) and Dr. Marine Boulanger (Université Clermont-Auvergne). ⚒️🔬🪨

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Diego González @geodgonzalez.bsky.social · 28/11/2024

Today is #ThinSectionThursday, so I'll repost an old one from the other site. Andradite #garnet (Melanite) phenocryst, surrounded by aegirine, in an Haüyne-rich foidite from Perler Kopf, #Eifel #volcanic field #Germany ⚒️

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Cailey Condit @cailcon.bsky.social · 28/11/2024

Beautifully zoned epidote 🤤 with actinolite inclusions in a subducted metabasalt from Pimu/Catalina Island. #thinsectionthursday

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Simon Wellings @metageologist.bsky.social · 24/11/2024

Metamorphism is what turns drab basalt into Christmassy reds and greens. It tells us what goes on inside subduction zones, in mountains and other hidden places. I've written many explainers on the topic. Overview: all-geo.org/metageologis... Or start at the beginning: all-geo.org/metageologis...

Rock sample showing dark green layer surrounded by red and white minerals

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Suvrat Kher @rapiduplift.bsky.social · 29/11/2024

Microfolding in metapelites. Greater Himalaya Sequence, Sunderdunga Valley, Kumaon Himalaya. #FridayFold

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Stephen Michalchuk @stephenmichalchuk.com · 28/11/2024

⚒️🪨 #thinsectionthursday on a quartz mylonite from… my iPhone camera roll 😂. Could be from the teaching collection or from Australia 🤷🏻‍♂️ I particularly like the “Hawaiian flower” partially recrystallized grain in the lower ribbon. Aloha! 🧪🔬

Thin section of a quartz mylonite cross polarized light with lambda plate in. Grain size is variable, with some super fine grained material mixed with micas, and coarse grained ribbons that are annealed and recrystallized.

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Carla Tiraboschi @carlatb.bsky.social · 28/11/2024

📣open PhD Position📣 We’re looking for a PhD student to experimentally investigate the role of aqueous fluids in the transfer of carbon in subduction zones at @unimuenster.bsky.social🇩🇪 in collaboration with the University of Perugia🇮🇹. More info here stellen.uni-muenster.de/jobposting/7...

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Sascha Zertani @sheared-sash.bsky.social · 26/11/2024

So strong and yet so weak: Look at this beautiful 'weak' shear zone in a 'strong' gabbro from western Norway. Can't wait to get back to the field in the summer! 🧪⚒️

Photgraph of a weak shear zone (deformed rock) in a strong gabbro (non-deformed rock). The shear zone is a approximately 10 cm thick. A coin (5 Norwegian krone) is in the image for scale. Image was taken in western Norway.

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Sascha Zertani @sheared-sash.bsky.social · 22/11/2024

Brittle? Ductile? Brittle-ductile? If you are interested in why rocks deform the way they do, consider submitting an abstract to our session at #EGU25! The deadline to apply for travel support is on December 2nd! meetingorganizer.copernicus.org/EGU25/sessio...

Info grafic advertising session TS1.3 at EGU25. Title of the session is: Brittle and ductile deformation of Earth's lithosphere: Mechanisms governing deformation style. Invited speaker: Marie Baïsset (ENS Paris)

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Vicky Veritas @vickyveritas.bsky.social · 22/11/2024

FridayFold - Folded and refolded Precambrian gneiss of the Canadian Shield in Georgian Bay, Ontario. More details in ALT.

Grey and pink striped folded Precambrian gneiss, Armstrong Rocks, Parry Sound Ontario province in Canada. Geographical coordinates are 45°55'90" North and 80°52'00" West. Wikimedia Commons photo by Jonathan Wilkins

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Dominik Sorger @domsorger.bsky.social · 22/11/2024

🌍✨ Passionate about Ancient Rocks? We’re excited to invite you to our Early Earth session at #EGU2025 in Vienna! 🏞️ Dive into groundbreaking discussions on the Earth’s evolution through the Archean and Proterozoic eras as we explore the secrets preserved in ancient rocks. 🪨🔍 #Geology #EarlyEarth #EGU

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Samuele Papeschi サムエレパペスキ | Geology is the way ⚒️🧪 @calamitaman.bsky.social · 21/11/2024

#ThinsectionThursday This chloritoid grain floating in white mica always makes me think of a star destroyer or a sci-fi cruiser spaceship. Don't ask me why 😂 FOV 3 mm Chloritoid schist, Massa Unit, Italy #geology #petrography ⚒️🧪

Dark green/grey group of chloritoid grains surrounded by platy white mica grains with bright colors in a schist, as seen under the microscope in crossed polarised light.

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Nick Barber 🌋 @volcannick.bsky.social · 21/11/2024

Reposting from this past summer for #thinsectionthursday

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John Garver @geogarver.bsky.social · 21/11/2024

The mineral zircon has played a central role in understanding deep time. These detrital zircons are from Cambrian sandstones in NY, and they have accumulated radiation damage, which causes disorder and volume changes. This mosaic took some time to make. All c-axis aligned. #thinsectionthursday

Microphotograph of brightly colored zircon crystals with rainbow colors.

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Cam Muskelly (Explorer of Deep Time ⏰ ⚒️) @cambriancam.bsky.social · 20/11/2024

Here are beautiful well formed Almandine garnets in Quartz. I don't just love fossils, minerals are fun too!

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Stephen Michalchuk @stephenmichalchuk.com · 21/11/2024

⚒️🪨 #thinsectionthursday of a corona of garnet enveloping (a weird) biotite within an anorthosite from Lofoten, Norway. This sample was drilled in what we thought was relatively undeformed rock, but plagioclase loves to form tapering deformation twins… so how deformed is undeformed? 🧐 #earth-sciences

Plane polarized light microscopy image of a corona of garnet enveloping (a weird) biotite within an anorthosite from Lofoten, Norway

Cross polarized light microscopy image of a corona of garnet enveloping (a weird) biotite within an anorthosite from Lofoten, Norway

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Kristina Dunkel @kristinadunkel.bsky.social · 21/11/2024

For my first #ThinsectionThursday under the blue sky, one of my favourite micrographs: A serpentine pseudomorph after carbonate? The mineral with the grey interference colours is serpentine which apparently preserves the cleavage of a pre-existing carbonate.

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Tracy Frank @drtracydfrank.bsky.social · 21/11/2024

For #ThinSectionThursday, Miocene glauconite recovered from the western Greenland margin, in thin section and core. Broadly speaking, glauconite is considered a diagnostic mineral for continental shelf marine environments where rates of sediment accumulation are very low. And it just looks cool.

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