Abalone Shell Under Ultraviolet Light #1133 taken 6:39 pm #art #photography #macro #abstract

Day 1 of 2026 highlight, #PacificMuseumofEarth collection: 1 snowflake obsidian ❄️

1/2 *Call for Abstracts*! GAC-MAC 2026 will be held in St. John’s, NL. Consider submitting an abstract to SS22: Exploring the Magmatic Framework of Continental Large Igneous Provinces and their Ni-Cu-PGE Prospectivity.

2/2 This Special Session celebrates the contributions of W.R.A. (Bob) Baragar in the fields of igneous petrology and geochemistry. Co-convened with @bodriscollearth.bsky.social and @thejow.bsky.social on behalf of the #MackenzieLIP project team.

Happy New Year 2026 🥳! Best Wishes for an *amazing year* of exploration and adventures.

Thin Section Thursday! Tourmaline Pegmatite Photomicrograph (XP) of tourmaline (blocky yellow mineral) surrounded by quartz & feldspar and muscovite mica (rounded rainbow-colored mineral). Contributed by Alexander Falster, Maine Mineral & Gem Museum. #thinsectionthursday #tourmaline

A magnesium-rich basalt retrieved by the Apollo 12 mission from the Moon. brightly coloured pyroxene and olivine surround grey plagioclase in cross-polars. This photo was taken in 2003 from a travelling collection of thin sections sponsored by NASA […] [Original post on fosstodon.org]

T.S. Thursday! Large rounded grains of garnet surrounded by masses of muscovite mica and biotite mica. Also found are small, brown oval-shaped grains of tourmaline. By Larry Tuttle, U Maine Farmington. Send images and short caption to akoziol1 at udayton dot edu. #thinsectionthursday

A 1.4 Ga organic rich mudstone from Australia that has low-grade contact metamorphism. Black blobs with crystal cores are thucolites, brown square is a fragment of microfossil that has been partially mineralised. More deets in alt text. #ThinSectionThursday #Geology #paleontology ⚒️🧪🔬

⚒️ - a bit early for #ThinSectionThursday but what the hell

Back to #Iceland photos from my recent trip. And here's another view of the marvellous yellow river estuary where it meets the sea at a black sand beach. #DronePhotography #DJIMavic3Pro

🫧 Our scientists recently found ice in Antarctica that’s 6 million years old, trapped ancient air inside. These "time capsules" offer a rare peek into Earth’s past atmosphere and how our planet has changed. 📲Pop into the research at @iflscience.com: go.whoi.edu/ifl-ice

HiPOD: Colorful Bedrock in the Central Uplift of an Impact Crater This bedrock has greater compositional diversity than the surface layers, because they are from greater depths, older, jumbled, and altered, and very diverse. https://uahirise.org/hipod/ESP_045519_1730 #Mars #science #NASA

#GeoCinema is back for #EGU26! Whether you have filmed fantastic spectacles in the field or produced an educational feature on the Earth, planetary, or space sciences - it's time to submit your short film 🎞️! 📅Submission deadline: 5 December 2025 👀 Application details: egu.eu/13NFE9

🌋 Meet the Pioneer of 4K Volcano Livestreams: Ryan Logtenberg 🏔 Documenting the raw power of volcanoes isn't just his passion, it's his life's mission. ❤🔥 Read more about his work:

Get to know the IAVCEI Commission of Cities and Volcanoes (CaV) 🌋 CaV links the volcanology community with emergency managers, fostering the exchange of ideas and experiences among “volcano cities”, and promoting multi-disciplinary research and actions. More about: citiesonvolcanoes.wordpress.com

#Earthquakes at #MountEtna reveal magma ascent from deep to shallow crust 🌋 — variations in #bvalue track magma movement through the volcano’s plumbing system. Check out our new study in #ScienceAdvances www.science.org/doi/10.1126/... @science.org More from our Etna studies below!

A great day at Dominica’s Boiling Lake, a hydrothermal wonder known for its bubbling surface and shifting activity, which we are closely monitoring.

Some of the ROTTnROCK team are currently in Dominica 🇩🇲 🌋 looking at, well, hydrothermal alteration of course! @magmatroll.bsky.social @trwalter.bsky.social @arianeloisel.bsky.social

Too cloudy for the full moon tonight, but here's last night's almost-full moon. If I didn't have a telescope, I'd never appreciate the color differences due to the different mineral compositions. 🧪

Always nice to find some interesting new geology to photograph. Thanks to @andybeavisphoto.bsky.social for pointing me in the right direction! #Iceland

🌋Did you know that there's more volcanic activity under the waves than on land? Find out how underwater explosions impact our planet at the WHOI Ocean Learning Hub, a free resource that's perfect for educators, students, and the ocean-curious: go.whoi.edu/volcano 📸 via ROV Jason 2009 © #WHOI

Excited to share the results of collaborative research in the San Juan Basin in New Mexico published today in @science.org that provides new age constraints for the Naashobito dinosaurs from New Mexico, like the giant sauropod, Alamosaurus: www.science.org/doi/10.1126/...

Fieldwork at Iceland’s geysers — we captured Strokkur’s eruption dynamics as polar lights lit up the sky. What a scenery! Grateful for the great collaboration with Corrado Cimarelli and the LMU team, Sasha Kostinskiy and the group from Czechia, and our team from GFZ Potsdam.

Palagonitised lapilli tuffs from subglacial volcano Cracked Mountain 🌋🇨🇦 line up for physical property measurements in Strasbourg! Will their properties vary as a function of distance from the dyke? 🧐 @alteringrocks.bsky.social

#MolluscMonday Sectioned nerineoidean gastropod from a limestone paving slab at the British Museum, London.

The latest eruption of Kilauea is underway, and she's shootin' sideways this time around! USGS live stream: www.youtube.com/watch?v=Bqmp...

Not far from the canyon pictured in my last posting is this lovely waterfall over the basalt columns - Stuðlafoss. #Iceland April 2023

Looking down over the top of some vertical basalt columns into the canyon at Stuðlagil #Iceland in April 2023. #Geology #GeologyRocks #BasatlPorn

A curious Arctic Fox pup checks out a nature photographer

HiPOD: A Landslide on Arsia Mons Continuing a landslide theme, this observation captures terrain right at the edge of the caldera of Arsia Mons. Arsia Mons and two other volcanoes form what is known as the Tharsis Montes. uahirise.org/hipod/ESP_07... NASA/JPL-Caltech/University of Arizona #Mars

Almost 50 years since PhD field work here - east side of Tukarak, Belcher Islands, Hudson Bay. Paleoproterozoic carbonates, Holocene raised beaches. Glorious rocks and landscapes. Tent site on island slightly left centre - the small white dot. Weather was generally crap, but on days like this... ⚒️🧪🌊

Canada has committed to protecting 30% of its marine areas by 2030. A FACETS collection provides policy-relevant insights to support this goal, addressing climate resilience in conservation planning. Discover the research ▶️ ow.ly/enVz50UYFpy

American Mineralogist: Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research Jolyon Ralph, et al. doi.org/10.2138/am-2... The aim is for users to be aware of the characteristics of the records in the database and better plan their usage in research.

Guess the Gem time!! What mineral do you think this is? Hint: there’s lithium in there. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

The mylonites I am looking at right now are not rocks, they are paintings... and - oh! It's #ThinSectionThursday Mylonitic granite, CPL FOV about 3 cm #geology #tectonics #structuralgeology #mylonite #quartz #feldspar #granite #rheology

The Duke of Wellington’s sarcophagus is made from the tourmalinised granite called luxullianite, quarried near St Austell, Cornwall and named after the village of Luxulyan. The sarcophagus is the only architectural use of this rock that I’m aware of. #urbangeology #thinsectionthursday

#ThinSectionThursday cathodoluminescence of fluorapatite and REE mineralisation from Nolans Bore, Australia. Other than being spectacular eye candy, this is very informative and tells quite a lot about the ore. Yay science! Image taken at CSIRO Microbeam Lab. @scienceanu.bsky.social

Black Tourmaline inclusions in Quartz from Minas Gerais - Brazil [Photo by: J&S Minerals] #quartz

Happy #WorldOceanDay !! Down here in Antarctica, we will spend it measuring the ocean and sampling the sea floor, to understand better how ice loss is impacting climate and ecosystems. The views continue to amaze…! 🧪❄️🥼🌊

New book!! 📕 Antarctica is intimately connected to the rest of our planet, affecting climate, ecosystems, cultures and society. Our new book draws together international experts to explore this influence, and to understand what humans are doing to Antarctica (1/n) www.routledge.com/Antarctica-a...

One of my favourites: Gorgosaurus going after the massive ankylosaurid Zuul. #FossilFriday⚒️🧪🦖

The Garni Gorge is absolutely spectacular 🤩

Welcome back to #FossilFriday Here is a beautiful polished section of the Stromatolite Collenia undosa. This comes from the Precambrian (Paleoproterozoic) Biwabik Iron Formation in Minnesota. It is commonly referred to as Mary Ellen Jasper. This trace fossil is 2.2-2.4 billion years old!

Imagine a world with horsetails as forest trees - this enormous Calamites stem cast is about 300 million years old and 12cm broad. On display in Liverpool World Museum. #FossilFriday ⚒🌏🧪🔬🌿🌱

The answer is emerald, a variety of the mineral beryl!! It fractures easily due to many inclusions. This emerald was mined from Habachtal, Austria, and was part of Louis IX’s crown. #GuessTheGem #GeoscienceBluesky ⚒️🧪💎

Just published! É. Brassard, M. Lemelin & M-C. Williamson, A preliminary inventory of gossans identified in the Canadian Arctic. GSC Open File 9235. doi.org/10.4095/ptdd...

Pre-print "Hyperspectral mapping of density, porosity, stiffness, and strength in hydrothermally altered volcanic rocks" now available for comments! 🌋 @rottnrock.bsky.social egusphere.copernicus.org/preprints/20...

Thin Section Thursday! 2-pyroxene granulite: lozenges of high relief orthopyroxene (pink) and clinopyroxene, (green), and low relief, slightly altered plagioclase. In XP, the plagioclase has curved (deformed) twin boundaries. Contributed by Matt Kohn. #ThinSectionThursday

Gorgeous cross polarised light view of a basaltic hyaloclastite (glass breccia) with phenocrysts of olivine and plagioclase. Fractured glass fragments and interstitial alteration particularly towards top. Found loose in our teaching collection, may be from Hawaii. #ThinSectionThursday 🧪⚒️