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@doktrock.bsky.social
2.5K followers 2K following 1.5K posts

Earthologist in a Chem Dept. Fargo; from St.Paul Minneapolis. U Minn. 🇩🇪🇱🇹/🇮🇳, spouse 🇮🇸. 2x Fulbright #T1D ally. ❤️Chicago. Geology! ☔️ doktrock.net

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Anne Kort | The Virtual Paleontologist @virtpaleo.bsky.social · 13h
I’ve been enjoying getting back to prep as a volunteer at the University of Wisconsin Geology Museum. Here’s the phytosaur sacral vertebra I’ve been working on #FossilFriday
Large fossil vertebra, reddish brown in color, propped up on bean bags. An air scribe sits next to it.
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Matt Friedman @friedmanlab.bsky.social · 14h
Variety pack of eurypterids at UMMNH for #FossilFriday: Acutiramus (UMMP IP 86635), Paracarcinosoma (UMMP IP 62598), Eurypterus (UMMP IP 7157), and Dolichopterus (UMMP IP 62680). All from the Silurian of New York and Ontario.
A fossil eurypterid on a gray slab of rock.A fossil eurypterid on a gray slab of rock. It has a narrow tail and a swollen midsection.A fossil eurypterid on a gray slab of rock next to a model of the same species painted green.A fossil eurypterid on a gray slab of rock with long, extended swimming appendages. It is displayed next to a model of the same species painted brown and yellow.
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bookswain.bsky.social @bookswain.bsky.social · 9h
They left for St Louis on June 14, 1897. Bear in mind there were no roads like now; the Model-T was a decade in the future. This was a grueling cross country ride with a plan to follow railroad tracks. In Nebraska they had to “walk through 185 miles of sand, pushing their bicycles before them.”
25th bicycle corps soldiers mounted on their equipment laden bikes in a single file in a field. Location unknown.
Image via the Mansfield Library, in the public domain.
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authodizer @doktrock.bsky.social · 9h
🧵⬇️ !
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SETI Institute @setiinstitute.bsky.social · 11h
#PPOD: A large new scar has appeared on the Moon. McGetchin crater formed sometime between April 11 and May 22, 2024, when an asteroid or comet roughly the size of a multi-story building slammed into the lunar surface. 🧪 🔭 🌕️
Fresh impact crater centered on a dark, heavily cratered lunar surface, with a bright radial ejecta blanket and streaks extending outward from the rim, indicating a relatively recent collision and surrounded by many smaller, older craters.
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Paul D. Taylor @nhmbryozoa.bsky.social · 18h
#FossilFriday It’s easy to see why Cotham Marble is often referred to as ‘landscape marble’. This Late Triassic limestone from the Bristol area is a microbialite. Detail from a specimen about 10 cm thick on display at the Natural History Museum, London.
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EAG @eageo.bsky.social · 13h
Job alert: Interim Assoc./Senior Editor Solid Earth (geophysics), Nature Geoscience, London/Milano/Pune. Apply by 15 October. More info: buff.ly/mSK4Vug
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Rob Larter @polarrobs.bsky.social · 01/10/2026
🧵🧪❄️ Shockingly, Swiss #glaciers have lost about 2 km³ of ice, 5.5% of their remaining volume this summer. Over the past 5 years the losses total about 10 km³. www.bluewin.ch/en/news/swit...
bluewin.ch
blue News | bluewin E-Mail | News, Politik, Sport, People
News und Sport aus der Schweiz & International, Politik, Wetter, People und Livestreams - Webmail Login für Bluewin E-Mail
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Sophie Carr @sophiecarr.bsky.social · 01/10/2026
A few random abstract images from #Iceland.
Flat grey pebbles on a black sand beach with little specks of sand on top of them and directional trails of sand to the left of each pebble where the wind has sculpted the sand.A frozen pool with snow on the top, a little open gap with lighter area reflected and a dark black rock to the bottom left.Rings and patterns of ice.Small pieces of broken icebergs on a black sand beach with the icebergs covered in the sand after strong winds.
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Maria Gorick @mariagorick.bsky.social · 02/10/2026
The startling white #Quartzite of #Holyhead Mountain. Composed of almost pure #Quartz, this rock was quarried to create the 1.7 mile #Breakwater. For more than 150 years, resilient #Quartz has provided a safe harbour for shipping, enabling travel and trade. #MinCup26 #TeamQuartz
A mountain,  composed of white quartzite, overlooks sea cliffs. A small number of houses can be seen on the grassy slopes.
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Mineral Cup & Ore Cup @mineralcup.bsky.social · 02/10/2026
Congratulations, Quartz! After a decade of #MinCup, this key rock-forming mineral of optical tricks is the #MinCup26 Champion! Due to intense manipulation attempts in the final hours, the exact winning margin is still being audited. Please join us tomorrow for celebration!
A clear double-terminated quartz crystal with petroleum inclusions. Credit: John Sobolewski
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Bethan Davies @iceybethan.bsky.social · 01/10/2026
I want to say it was a pleasure, but it was pretty sad to be discussing the massive scale mass loss from Swiss glaciers with DW News today. www.youtube.com/watch?v=Yzt5... @matthias-huss.bsky.social
youtube.com
Could Switzerland’s glaciers disappear? | DW News
YouTube video by DW News
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voary.bsky.social @voary.bsky.social · 01/10/2026
Schlumberger Faculty for the Future is accepting applications for women pursuing a PhD or postdoc outside their home country. www.fftf.slb.com
fftf.slb.com
Schlumberger Foundation, Faculty for the Future Application Login
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Gawen Jenkin @gawenjenkin.bsky.social · 06/09/2026
From different angles - no I am not photoshopped into the pics!
Geo-geek again at different angle with giant quartz crystals - biggest ~70 cm across.
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Patrick De Haan @gasbuddyguy.bsky.social · 01/10/2026
ultimately, more of Canada's oil being exported beyond the U.S. threatens U.S. refineries in the Rockies, Plains, Great Lakes and beyond in the years ahead. One project isn't the greatest worry- its the diversification happening at elevated speed.
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tanterei.bsky.social @tanterei.bsky.social · 01/10/2026
Hard choice again in #mincup26 finals, but I'm in for #Bergkristall (or #Quartz). Apart from its usefulness for time keeping its use in decorative goblets in the 16th century is fascinating mastery! Images from Fed. Art Collection Saxony: skd-online-collection.skd.museum/Result/Index...
A decorative cup in the shape of a galleon intricately cut from quartz some time in the 16th century in Milano.
Source: https://skd-online-collection.skd.museum/Details/Index/117995A goblet made of a golden, intricately decorated, base holding a mantle made of quatz. Topped by a lid of gold and quartz, with an ivory figurine on top.
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Vicky Veritas @vickyveritas.bsky.social · 01/10/2026
Shocked #Quartz is one piece of evidence that helps identify large impact areas, like the one left by Chicxulub asteroid. The quartz crystals develop a series of parallel laminae, called shock lamellae that indicate deformation, or breakage of the crystal along multiple, parallel planes. #MinCup26
This rainbow quartz crystal reveals the shock lamallae that indicates impact; here of the Chicxulub asteroid.
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Vicky Veritas @vickyveritas.bsky.social · 01/10/2026
There has been a lot of talk about piezoelectricity in the match, but little about exposure dating. Vote #quartz in #MinCup26 for the O2 atoms in the quartz crystal structure & the predictable way they are converted into beryllium isotopes when exposed to the Universe and not inside a mountain.
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John P. Friel, Ph.D. @friel.bsky.social · 01/10/2026
Jason Cryan, from the Natural History Museum of Utah, and Barbara Thiers, formerly of the New York Botanical Garden, join Host Flora Lichtman to discuss the challenges of running a natural history museum.
sciencefriday.com
Are natural history museums in trouble?
The country’s oldest natural history museum, in Philadelphia, has closed its doors to visitors. Will other museums follow?
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authodizer @doktrock.bsky.social · 01/10/2026
Re-upping this #Quartz aka rock crystal vase on display at the Prado for #MinCup26 !⚒️
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Dr. Sam Anderson @sam-science.bsky.social · 01/10/2026
Happy new water-year! Welcome to hydrological 2027!
Mountains reflect on Widgeon CreekBraided streams on Devon Island, NU.Copper Island on Shuswap LakeReflections on Duffy Lake
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bookswain.bsky.social @bookswain.bsky.social · 01/10/2026
For the #MinCup26 final, going with #quartz: this is the piezoelectric quartz device that Pierre Curie & his brother invented to demonstrate the piezoelectric effect, which later served as the foundational technology that enabled Pierre’s wife Marie to discover radium and polonium.
A brass mechanical device suspending what looks like a scale between the legs of its wooden tripod support. 
Source: “A piezoelectric quartz device that belonged to the Curie Laboratory,
dating from 1904. It was restored in 2005 and is now displayed at the Curie Museum.
Photo: Curie Museum / Uriel Chantraine.”
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Jon Hawke @archaeohawke.bsky.social · 01/10/2026
A proper mash up for #RomanFortThursday & #FindsFriday 🥳 #Archaeology 👇🏼 Lost Roman city discovered on the Danube frontier in Austria share.google/oPlWvMN0crLT...
share.google
Lost Roman city discovered on the Danube frontier in Austria
Archaeologists have uncovered the remains of a previously unknown Roman town in Lower Austria, complete with a planned street network, extensive burial grounds and an amphitheatre capable of holding a...
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Duncan Money @mininghistory.bsky.social · 01/10/2026
Google Earth's historical satellite view is an amazing research tool. Here's the much-contested and dangerous Rubaya Mine in eastern Congo in 2010 and 2025:
Satellite view of Rubaya in 2010: a patchwork of small green and brown farm fields on rolling hills, with a winding road, a small village, and only a tiny patch of exposed soil at lower right.Satellite view of Rubaya, DR Congo, in 2025: a large bare, orange-and-tan scar of open-pit mining cuts through green hills, with eroded gullies radiating outward and a village at upper left.
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John Stott @jpsastro.bsky.social · 24/09/2026
Had a UKRI funded grant proposal rejected at the "AI triage stage". "This AI-based triage was used only to identify approximately 50% of the strongest proposals to take forward to full human review." 🧪 #academicsky
I am writing to let you know that, unfortunately, your application was not successful.

Review process

As part of the initial triage of the 179 proposals submitted to this call, each was assessed using an AI-based review. Every proposal was read independently by several different AI models against the same seven criteria used to shape this call (including cyber security relevance, research quality and novelty, importance of the problem addressed, feasibility of the project plan, likely outputs and impact, value for money, and responsible research practice), with each model asked to give a score and a written justification with supporting quotations from the text. To guard against any one model's idiosyncrasies, we also ran a second, independent process in which different AI models debated the merits and weaknesses of each proposal before reaching a judgement, again against the same criteria. Scores from both processes were combined to produce an overall ranking. 

This AI-based triage was used only to identify approximately 50% of the strongest proposals to take forward to full human review.  Projects selected for funding were drawn from those that progressed to the full human review stage. We recognise that AI-assisted assessment is a new and evolving part of the review process, and we are continuing to evaluate how well it aligns with the judgements of human reviewers on this call. We will soon produce a document detailing our method, so that others can build upon it and improve it.

Feedback on your application

Your application was not selected to progress beyond the AI triage stage.  To provide transparency on the outcome of this assessment, we are sharing below the scores (out of 5) from each of the two AI review processes described above, together with the mean score across the two processes.
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The Guardian @theguardian.com · 01/10/2026
‘Explosion of melt rates’: 20% of Swiss glaciers lost in five years
theguardian.com
‘Explosion of melt rates’: 20% of Swiss glaciers lost in five years
Alpine regions in Europe experiencing extreme glacier collapse due to heat-trapping effects of fossil fuel pollution Switzerland has lost almost one-fifth of its ice in just five years, research has found, in a dramatic reshaping of the Alpine country whose big white glaciers have been reduced to moonlike rock deserts, scientists say. Swiss glaciers shrank by 5.5% in the first eight months of 2026, according to an annual monitoring report, after a summer of scorching heatwaves that followed a winter with little snow. The reduction in ice volume falls just shy of the record set in 2022 and brings the total loss of glacier ice since 2021 to 19.4%. Continue reading...
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MineralExpert.org @mexporg.bsky.social · 26/09/2026
Large #Quartz cluster with #Gwindel from Puiva, Ural Mts., Russia. #MinCup26 #MinCup #mineral #crystal #mineralogy
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Vicky Veritas @vickyveritas.bsky.social · 01/10/2026
Cranberry Gneiss, Mesoproterozoic, 1.05 Ga; Appalachian Mt.s, North Carolina Museum of Natural Sciences Gneiss is a metamorphic rock that high temp & pressure have caused the minerals in granite to separate into light & dark bands. The light bands are quartz. #MinCup26 #QuartzDeservesToWin
A banded rock with bands of dark mineral and white quartz.
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Mika McKinnon @mikamckinnon.bsky.social · 01/10/2026
Things that make me laugh: Every time #Quartz has been in the #MinCup finals, it’s been against a mineral with the composition X₂O. This is particularly funny as ice and #Cuprite are the only two minerals with this composition, & ice took #MinCup19. Win some, lose some? Or history repeats?
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David M. Perry @lollardfish.bsky.social · 01/10/2026
“Cutting this much from the university budget will mean that some of the core functions of the university will be lost. It’s not possible to just do more with less — to work smarter, to trim around the edges. We’re going to have to do less with less.” Gift link: www.startribune.com/umn-cuts-sta...
startribune.com
Perry: What we lose if the U cuts $225 million
"Austerity doesn’t work. Instead, it creates a death spiral, where reduction in services leads to reductions in revenue, which lead to reductions in services, which leads to reduction in revenue, whic...
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Ryan J Hollister @phaneritic.bsky.social · 30/09/2026
Vote #quartz! I found this doubly terminated Herkimer “Diamond” in NY a few years ago by cracking tons of dolostone searching for vugs coated in small quartz crystals (druzy) that are black from hydrocarbons. This piece opened, but not enough to let the crystal fall. I kept it like this b/c it’s rad
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Mineral Cup & Ore Cup @mineralcup.bsky.social · 01/10/2026
#MinCup26 FINALS!!! We have a pair of geometric beauties as deep red #Cuprite is against versatile #Quartz. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...
Split image of fine red needles of cuprite on one side and chunky clear quartz crystals on the other.
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Bill Minarik @silicatefondue.fosstodon.org.ap.brid.gy · 30/09/2026
Quartz terminations co-precipitated with iron oxides, turning them a delightful burgundy brown. Sample from Bavaria, but now our teaching collection. #MinCup26 #Quartz #IronOxide #Bavaria
Terminated hexagonal quartz crystals brown in color due to iron oxides. Sample collected sometime last century in Bavaria Germany. Canadian quarter for scale.
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Steve Brusatte @stevebrusatte.bsky.social · 30/09/2026
🚨Postdoc job alert: Come work with my paleontology & evolution group in Edinburgh! Researcher in Cognitive Evolution Over Deep Time. You'll study how brains & neurons have evolved over time, and predict neuron count in extinct species! www.jobs.ac.uk/job/DTC355/p...
jobs.ac.uk
Postdoctoral Research Associate in Cognitive Evolution over Deep Time at The University of Edinburgh
Apply for the Postdoctoral Research Associate in Cognitive Evolution over Deep Time role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
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Kerstin Neuhaus @microtopico.bsky.social · 30/09/2026
Vote color. Vote #quartz! #MinCup26
Several quartz crystals ordered from clear, to dark brown color.A mixture of different shiny tumbled pieces of minerals on a white ceramic plateDyed blue agateOrdinary grey, white, and rosy agate
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Matt Friedman @friedmanlab.bsky.social · 30/09/2026
Faculty curator position in vertebrate paleontology! Great opportunity to work with outstanding colleagues at LSUMNS: lsu.wd1.myworkdayjobs.com/en-US/LSU/jo...
lsu.wd1.myworkdayjobs.com
Assistant Professor
All Job Postings will close at 12:01a.m. CST (1:01a.m. EST) on the specified Closing Date (if designated). If you close the browser or exit your application prior to submitting, the application progre...
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Vicky Veritas @vickyveritas.bsky.social · 30/09/2026
Herkimer diamonds are naturally double-terminated quartz crystals with exceptional clarity, mined primarily in Herkimer County, New York. Double termination is very rare in quartz. Link for more info in ALT! #Quartz #MinCup26
"Herkimer diamond" quartz crystals. More at: https://geology.com/articles/herkimer-diamonds.shtml
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authodizer @doktrock.bsky.social · 30/09/2026
#Quartz var. Flint - school children promoted the idea Knife River Flint should be the state rock of North Dakota. It was approved! Historically widely used and traded by indigenous peoples.
A dark brown vitreous rock, approximately 7 x 8 cm, with light yellow weathering surface. It shows conchoidal fracture. My photo.
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Carter's Dad @johnmckendry.bsky.social · 30/09/2026
I have kept pretty quiet this year throughout #MinCup26 but I think now it's time to speak up. Don't get me wrong, I am not going to bad-mouth graphite, I am fond of graphite. My house is full of serious pencils from 8B to 2H. And I respect that graphite has been around for a long time, it is not
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Dave Rodland @daverodland.bsky.social · 29/09/2026
#TalonTuesday isn't a thing, is it? I feel like maybe it could be. Reach out and touch someone! 🧪⚒️🦖
Assorted replica theropod talons and phalanges. Large.
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Stefan’s Lens on the North @sts63.bsky.social · 28/09/2026
Hafragilsfoss on the glacial river Jökulsá á Fjöllum, cutting its way through the dramatic Jökulsárgljúfur canyon in North Iceland. Jökulsárgljúfur is also called the Grand Canyon of Iceland. #Hafragilsfoss #Jökulsárgljúfur #Iceland #Landscape #Photography #Nikon #Foss #NorthIceland #Canyon
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ESA Space Science @science.esa.int · 28/09/2026
While the main goal was to alter Juice’s trajectory, the flyby also provided an opportunity to test out Juice’s science instruments on a real surface in space. Next stop? One last hello to Earth In January 2029. Read more here 👉 www.esa.int/Science_Expl... 🔭 🧪
esa.int
Successful Earth flyby improves Juice’s course to Jupiter
The European Space Agency’s Jupiter Icy Moons Explorer (Juice) skimmed the very outer edge of Earth’s atmosphere on 28 September, using the gravity of our home planet to alter its route to Jupiter usi...
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Anthony (Tony) J. Martin @ichnologist.bsky.social · 29/09/2026
Job announcement: Assistant Teaching Professor (non-tenure but renewable) position for Applied Environmental Social Sciences in the Department of Environmental Sciences at @emorycollege.bsky.social, Atlanta GA. Let me know if you need more info or insights, glad to help. apply.interfolio.com/192159
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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authodizer @doktrock.bsky.social · 29/09/2026
"Blast, at last: #Minnesota ’s first new iron ore mine in 50 years targets new era of steelmaking" #Nashwauk
mprnews.org
Blast, at last: Minnesota’s first new iron ore mine in 50 years targets new era of steelmaking
Mesabi Metallics has begun mining ore at its new $2.5 billion project on the Iron Range and is already making plans for a more ambitious development.
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Ben Miller @extinctmonsters.bsky.social · 29/09/2026
A half-remembered Sternberg Museum story I need to get to the bottom of: After FHSU bought the metroplex dome and exhibits were being developed to fill it, some important stakeholder (donor? university prez?) kept insisting that the museum be "more like Jurassic Park."
A square building next to a huge dome in front of a blue sky in flat western Kansas.
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Jonathan: Food & Photography @jonathanfoodie.bsky.social · 29/09/2026
A beautiful Fall day looking southwest from the #ColumbiaGeorge Lots of #geology here: - 60 million year old #Columbia River - 16 million year old flood basalts - 600,000 year old #MtHood -12 to 18,000 Missoula flood carving gorge - week old dusting of snow #pnw #westcoastkin #landscape #scape
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Helen MC @crystallised-cricket.com · 29/09/2026
Semi final #MinCup26 match up between #Cuprite and #Halite - I'm now fully behind the magnetic #Cuprite - and have dug out that neutron diffraction discovered it has nearly ZERO thermal expansion from 200-300 K link.springer.com/article/10.1... WEIRD!
Image representing the crystal structure of Cuprite - here red spheres represent oxygen atoms, and blue spheres represent copper atoms.  The structure has been expanded over a,b and c axes. The representation is drawn in VESTA from entry #7351 in the American mineral databaseImage representing the crystal structure of halite. Yellow spheres represent sodium atoms, green spheres represent chlorine atoms. The representation is drawn in VESTA from entry #641 in the American mineralogist database.
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Ben Miller @extinctmonsters.bsky.social · 29/09/2026
Well this is bleak. And why did they wait a week after the news leaked just to say "we have no plan?"
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Joe Mason @moreorloess.bsky.social · 29/09/2026
Well, this is interesting but I'm often in some other far away constellation, I think.
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spooky murwolf the wereduck 〓〓🏳️‍🌈𓅄✊🐺🪄🎡 @murduck.bsky.social · 28/09/2026
Graphite helps my pencil to write. My locks are not frozen up tight. My screen door slides free, And I've drawings to see. So please vote for Graphite tonight! VOTE GRAPHITE! #MinCup26
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