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Guillaume Duclaux @gduclaux.bsky.social · 1d

They should be called mini-hoodoos 😊
blogs.egu.eu/network/geos...

It has often been said that geology is the study of scales. Time scales, large scales, small scales and many others. Indeed, one of the most crucial parts of any photo or map is the scale. Furthermore...

blogs.egu.eu

Reposted by Guillaume Duclaux

Zoltán Sylvester @zzsylvester.bsky.social · Sep 3

Some aerial footage of the deformed/liquefied Navajo Sandstone at White Pocket: www.youtube.com/watch?v=02zP...

White Pocket from above

YouTube video by Zoltan Sylvester

www.youtube.com

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Guillaume Duclaux @gduclaux.bsky.social · Aug 31

Majestic lenticular clouds over the Patagonian Andes (near Aguilera Glacier)

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Guillaume Duclaux @gduclaux.bsky.social · Aug 26

Torres del Paine is another geological wonder of this region! Although the weather was a bit harsh, I was just amazed to see the granitic laccolith with my own eyes. Kudos: herds of guanacos and a puma

The granite towers of Torres del Paine with a lake in the foreground

Torres del Paine granitic intrusion with Cretaceous sediments in the foreground and about the granite

Herd of guanacos with mountains covered with snow in the background

Felsic dyke crosscutting the Cretaceous sedimentary strata

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Guillaume Duclaux @gduclaux.bsky.social · Aug 26

Following #ISAES2025 I have embarked from Puerto Natales to discover the Serrano and Balmaceda glaciers with a fantastic group of Antarctic geologists. The glacial landscape and the geology in the Magallanes region of Chile 🇨🇱 are breathtaking 🤩🏔️🧊❄️

Serrano glacier steep tongue reaching an icy lake

Close up view to the glacier tongue reaching the lake

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Guillaume Duclaux @gduclaux.bsky.social · Aug 18

Yesterday I was among the lucky few who enjoyed a guided tour of the new Chilean ice breaker “Almirante Viel” and the onboard scientific facilities #ISAES2025 in Punta Arenas 🇨🇱

Monitors wall with scientific acquisitions

Rosette sampler for seawater in the moon pool room

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Reposted by Guillaume Duclaux

Zoltán Sylvester @zzsylvester.bsky.social · Aug 12

Short paper in @joss-openjournals.bsky.social on 'segmenteverygrain', a machine learning model for segmenting grains in images. Review process: a bit slow, but transparent, friendly, rigorous, and useful joss.theoj.org/papers/10.21...

Photo of fluvial gravel from Barton Creek, Austin, Texas (A), output of the segmentation (B), size distributions of the major and minor grain axes (C), and the area-weighted size distributions (D). Major grain axis lengths are shown in blue, minor grain axis lengths in orange.

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Reposted by Guillaume Duclaux

Martijn van den Ende @martijnende.bsky.social · Aug 6

Measuring rock slides is cool, but modelling rock slides is cool too. So why not do both? Come join us at the beautiful Côte d'Azur! We have a fully-funded PhD opportunity available in the framework of the ERC UNREST project. Application window is open until 25 August: emploi.cnrs.fr/Offres/Docto...

Portail Emploi CNRS - Offre d'emploi - PhD Thesis: Multi-scale seismic characterization of active rockslides: from internal deformation to mass movement dynamics (M/F)

emploi.cnrs.fr

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Reposted by Guillaume Duclaux

Vilain Syndicaliste @vilainsyndicaliste.bsky.social · Jul 20

Vous l'avez fait pour la loi Duplomb ?

Vous pouvez le faire pour taxer les plus riches !

-Pour une taxe Zucman
-Pour une taxe sur les super-profits
-Pour une taxe sur les gros patrimoines
-Pour lutter contre la fraude fiscale

À signer et partager !
petitions.assemblee-nationale.fr/initiatives/...

petitions.assemblee-nationale.fr

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Reposted by Guillaume Duclaux

Dr Nord Sud @drnordsud.bsky.social · Jul 20

Et hop

Vilain Syndicaliste @vilainsyndicaliste.bsky.social · Jul 20

Vous l'avez fait pour la loi Duplomb ?

Vous pouvez le faire pour taxer les plus riches !

-Pour une taxe Zucman
-Pour une taxe sur les super-profits
-Pour une taxe sur les gros patrimoines
-Pour lutter contre la fraude fiscale

À signer et partager !
petitions.assemblee-nationale.fr/initiatives/...

petitions.assemblee-nationale.fr

3 6 28

Reposted by Guillaume Duclaux

@HStiles1 @hstiles1.bsky.social · Jul 16

www.livescience.com/planet-earth...

Scientists discover long-lost giant rivers that flowed across Antarctica up to 80 million years ago

Large flat surfaces carved by ancient rivers deep beneath the East Antarctica are influencing how ice flows across the continent today, according to a new study.

www.livescience.com

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Guillaume Duclaux @gduclaux.bsky.social · May 31

If it comes from the Alps this could be a piece of the Permo-Triassic Verrucano conglomerate (lithotheque.ens-lyon.fr/Lithotheque/...)

lithotheque.ens-lyon.fr

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Reposted by Guillaume Duclaux

Stelios Katsanevakis @skatsanevakis.bsky.social · May 23

New study in #Nature reveals the 'Gollum effect': nearly half of surveyed scientists report territorial behaviors—data hoarding, gatekeeping—mostly during #PhD. Early-career researchers bear the brunt; 1 in 5 left academia as a result.
www.nature.com/articles/d41...
🧪

Science’s ‘Gollum effect’: PhDs bear brunt of territorial behaviour

Survey respondents at all career stages report colleagues engaging in territorial and possessive behaviours — but early-career researchers are most often affected.

www.nature.com

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Reposted by Guillaume Duclaux

Maya Wei-Haas, PhD @mayaweihaas.bsky.social · May 2

**BIG NEWS in the geology world!** For the first time, scientists spotted an active eruption along the mid-ocean ridge!!

They visited the hydrothermal vent the day before, where a vibrant ecosystem thrived in the sweltering water. The next day, everything was gone. ⚒️🧪

My latest for @nytimes.com

Volcanic Eruption in Deep Ocean Ridge Is Witnessed by Scientists for First Time (Gift Article)

Researchers diving in a submersible in the eastern Pacific realized that the landscape they had studied the day before had been glassed over by fresh lava.

www.nytimes.com

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Guillaume Duclaux @gduclaux.bsky.social · Apr 29

Tuesday could be Strontium Sulfate day! Why not…

Clusters of pale blue celestite crystals from Madagascar ⚒️🧪

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Reposted by Guillaume Duclaux

Louis Moresi @louis.moresi.info · Apr 29

⚒️

Underw🌏rld Geodynamics Software @underworldcode.org · Apr 29

Sign up for the Underworld newsletter !

www.underworldcode.org/intro-to-und...

Direct from the burning keyboard of Prof Diablo

Underworld

A parallel, python, particle-in-cell, finite-element code for Geodynamics Underworld is a python-friendly geodynamics code which provides a programmable and flexible front end to all the functionality...

www.underworldcode.org

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Guillaume Duclaux @gduclaux.bsky.social · Apr 25

To brighten your weekend: pink rhodonite crystals (manganese inosilicate) from Madagascar
🤩⚒️

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Guillaume Duclaux @gduclaux.bsky.social · Apr 18

Who wants to see waterfalls inside an ancient lava lake? Well… who doesn’t?
This is the Ray-Pic waterfall in Ardèche (SE France). Beautiful columnar jointing in a Pleistocene basanite full of mantle xenoliths 🤩⚒️