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Guillaume Duclaux

@gduclaux.bsky.social
185 followers 99 following 19 posts

Rock whisperer ⚒️ - Love deformed old rocks and modern rift systems | field work, teaching tectonics & numerical modelling | rupicolous, yet calcifuge | he/his 🇫🇷 🇦🇺 & 🇦🇶 Associate Professor at Université Côte d’Azur (Nice, France)

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Reposted by Guillaume Duclaux
CIRES @cires.colorado.edu · 03/11/2025
New video: A glacier on Antarctica’s Eastern Peninsula experienced the fastest retreat recorded in modern history—in just two months, nearly 50 percent of the glacier disintegrated. Watch this video to understand what happened. Study by @ciresnews #Antarctica #glaciermelt
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Reposted by Guillaume Duclaux
Zoltán Sylvester @zzsylvester.bsky.social · 03/09/2025
Some aerial footage of the deformed/liquefied Navajo Sandstone at White Pocket: www.youtube.com/watch?v=02zP...
youtube.com
White Pocket from above
YouTube video by Zoltan Sylvester
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Guillaume Duclaux @gduclaux.bsky.social · 31/08/2025
Majestic lenticular clouds over the Patagonian Andes (near Aguilera Glacier)
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Guillaume Duclaux @gduclaux.bsky.social · 26/08/2025
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 · 26/08/2025
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  Balmaceda glacier
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Guillaume Duclaux @gduclaux.bsky.social · 18/08/2025
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 🇨🇱
Bow of a red ship 🚢Monitors wall with scientific acquisitions Rosette sampler for seawater in the moon pool room Main deck
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Reposted by Guillaume Duclaux
Zoltán Sylvester @zzsylvester.bsky.social · 12/08/2025
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 · 06/08/2025
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...
emploi.cnrs.fr
Portail Emploi CNRS - Offre d'emploi - PhD Thesis: Multi-scale seismic characterization of active rockslides: from internal deformation to mass movement dynamics (M/F)
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Reposted by Guillaume Duclaux
Vilain Syndicaliste @vilainsyndicaliste.bsky.social · 20/07/2025
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 · 20/07/2025
Et hop
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Reposted by Guillaume Duclaux
@HStiles1 @hstiles1.bsky.social · 16/07/2025
www.livescience.com/planet-earth...
livescience.com
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.
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Reposted by Guillaume Duclaux
Stelios Katsanevakis @skatsanevakis.bsky.social · 23/05/2025
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... 🧪
nature.com
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.
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Reposted by Guillaume Duclaux
Maya Wei-Haas, PhD @mayaweihaas.bsky.social · 02/05/2025
**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
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.
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Guillaume Duclaux @gduclaux.bsky.social · 29/04/2025
Tuesday could be Strontium Sulfate day! Why not… Clusters of pale blue celestite crystals from Madagascar ⚒️🧪
A geode with blue crystals 
Close up view on blue crystal faces
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Reposted by Guillaume Duclaux
Louis Moresi @louis.moresi.info · 29/04/2025
⚒️
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Guillaume Duclaux @gduclaux.bsky.social · 25/04/2025
To brighten your weekend: pink rhodonite crystals (manganese inosilicate) from Madagascar 🤩⚒️
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Guillaume Duclaux @gduclaux.bsky.social · 18/04/2025
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 🤩⚒️
Waterfalls within columnar volcanic rocks Peridotite xenoliths in basanite
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Guillaume Duclaux @gduclaux.bsky.social · 03/04/2025
Exploring Nice’s backcountry geology with 2nd year students - near Entreveaux ⛰️⚒️
Geology students interpreting a panorama Panoramic view toward the East from Entrevaux (04) showing the Var valley and surrounding mountains 3D view of the surface geology wrapped over a digital elevation model
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Guillaume Duclaux @gduclaux.bsky.social · 22/03/2025
Back from a week in the field with MSc students mapping and studying deformation in variscan rocks from the Maures-Tanneron Massif near St Tropez 😍
Long exposure picture of rocky outcrops along the Mediterranean 
M-folds in kyanite-garnet micaschists / quartzite layers Geology strudents mapping folded metamorphic rocks by the sea
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Guillaume Duclaux @gduclaux.bsky.social · 21/03/2025
What’s not to love with boudins! ⚒️
Quartz vein boudinage in a compositionally layered migmatitic gneiss Quartz vein boudinage
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Reposted by Guillaume Duclaux
Peter T Fretwell @ptfretwell.bsky.social · 10/03/2025
Bedmap3 is now out rdcu.be/ecTmO
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Guillaume Duclaux @gduclaux.bsky.social · 01/02/2025
And of course Aussie wildlife was there 🐾
Wombat (Vombatus ursinus) grazing A wisdom of wombats (Vombatus ursinus) - mother and cub grazing Echidna (Tachyglossus aculeatus) walking in the grass with Mount Maria in the background Cardboard animals in a souvenir shop
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Guillaume Duclaux @gduclaux.bsky.social · 01/02/2025
How beautiful is Tassie?! 🇦🇺 Back from Antarctica I took a couple days off to explore parts of southern Tasmania with some mates (in Mount Field NP & Maria Island NP). The luxurious forests with fern trees and waterfalls felt like a trip to Carboniferous times.
Waterfalls with fern trees in luxurious forest High waterfall in luxurious forest Gum tree in front of a lake in alpine Tasmanian landscape Sandstone cliffs by the sea with mountain peak in the background
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Guillaume Duclaux @gduclaux.bsky.social · 31/01/2025
Looking back to some fieldwork memories earlier this year…
Adelie penguins’ rookerie with sea ice and a glacier in the background Geologist sampling rocks with snow and penguins in the background Rocky islands with icebergs and clouds
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Guillaume Duclaux @gduclaux.bsky.social · 31/12/2024
Happy new year 2025 from Dumont D’Urville station in Adélie Land, East Antarctica… not the best weather for geology though
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Guillaume Duclaux @gduclaux.bsky.social · 27/01/2024
One of the many pros of the French Riviera are the landscape and geology diversity… and canoeing on the Mediterranean on a sunny winter morning with a view on the snowy Alps
Red rhyolites of the Esterel massif viewed from the seaPaddlers on tauati va’a in the foreground, the red volcanic rocks of the Esterel massif, and the snowy summits of the Mercantour massif in the back
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