Xavier Devleeschouwer

Sedimentologist, urban geology and radar interferometry. Working @GSBelgium @RBINSmuseum and teaching sedimentology/micropal @ULB. Views and opinions are my own

[Xavier Devleeschouwer @xdevleeschouwer]

For those interested or for the young students and secondary schools interested by the thematic of urban areas affected by climate change and geology (under the city)

[Geologica Belgica Luxemburga (GBLsp) @GeolBel]

📢 EGS Urban Geology Experts Group filmed a captivating 30-minute documentary: Cities Under Pressure. We’re excited to premiere it - free event on December 4, 2024 in Brussels at the beautiful RBINS theatre. 150 seats available -> register! Trailer:https://t.co/2mrP4G68AW

[Scott Duncan @ScottDuncanWX]

Summer-style heat is piling into Europe right now. Unprecedented for this early in April.

Watch how Storm Kathleen acts like a giant engine that scoops the heat out of Africa and pushes it across Europe. Many records are about to fall...

[Xavier Devleeschouwer @xdevleeschouwer]

@TobySpribille @PrincetonUPress pre-ordered mid-February 2024 on Amazon, sounds amazing

[Seismologie.be @Seismologie_be]

🚨New paper!🚨
“Brussels’ bedrock paleorelief from borehole-controlled powerlaws linking polarised H/V resonance frequencies and sediment thickness”
by @koen_vannoten, @seismotom, C. Goffin, B. Meyvis, J. Molron, T. Debacker & @xdevleeschouwer.
https://t.co/motfV3E9Lu [1/14]

[Xavier Devleeschouwer @xdevleeschouwer]

@sandra_cordier @UrbanPalaeo @urban_geology @pavementgeology @Paleourbana amazing sponge, where it has been found ? Tournaisian limestone i guess ?

[Xavier Devleeschouwer @xdevleeschouwer]

Vous aimez la géologie en Belgique et vous avez l’œil d'un photographe ->Participez au concours photo 2022 "Showcasing the Geo-beauty of Belgium" dans les différentes thématiques proposées -> https://t.co/TGjqR8CAwY #geoheritage #RBINS #GSBelgium #GSBelgium125

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Columnar jointing: these structures seem man-made, but they actually occur naturally. When lava cools, it shrinks and starts cracking in hexagonal (or similar) shapes. These cracks will tend to propagate down the lava forming long columns.

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts The materials used to construct our old buildings often came from local or regional quarries because it was difficult to transport stones over long distances before mechanization. Example: limestone/marble blocks used as bricks in houses around Rochefort.

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts De gesteencyclus beschrijft de relatie tussen de drie soorten gesteenten (sedimentaire, metamorfe en stollingsgesteenten) en hoe het ene type in het andere overgaat in de loop van de geologische tijd. Tectoniek, verwerings- en erosieprocessen dragen daartoe bij.

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Did you know that there is an island called Christmas? Named on this day in 1643, this volcanic island is mostly famous for its extensive phosphate deposits, used as fertiliser. These deposits derive from ancient guano - a.k.a. bird poo! Merry Christmas 🎄🏝

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Igneous rocks are formed when magma or lava cools and solidifies. Intrusive igneous rocks are formed inside of the Earth and cool very slowly. Extrusive igneous rocks are formed on the Earth's surface and cool very rapidly (like in a volcanic eruption).

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts 2021 felt like a long year for us, but it is just a tiny fraction of Earth's age. If we shrink the geological time scale to fit one hour, modern humans only appear in the last second. Happy New Year from the GSB! 2️⃣0️⃣2️⃣2️⃣🎉

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Sedimentary rocks form when smaller pieces of rock are carried away by wind or water and are deposited as new sediments. Sometimes, they are compressed so tight that they become solid rocks (e.g. sandstone).
📷 Grès de Fontenoille © GSB

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Metamorphic rocks form when a rock (sedimentary, igneous or metamorphic) is transformed into a new one as a result of immense heat and/or pressure. The process of metamorphism can align, rotate, flatten and enlarge minerals or create new ones. 📷 Bouillon © GSB

[Geological Survey BE @GSBelgium]

#GSB125GeoFacts Ever wonder how sand ends up on the beach? First, the weathering process breaks down or dissolves exposed rocks on land. Then the erosion process transports the pieces of rock away by wind, water or ice. With time, the pieces become smaller and reach the beach.

[Institute of Natural Sciences Belgium @nat_sciences_be]

Happy birthday to the Geological Survey of Belgium (@GSBelgium)! 125 yrs old on this day, and since 2002 part of @RBINSmuseum. The original purpose, to make a geological map of the subsurface, has been greatly expanded over the years! Congrats to our #geologists and staff #gsb125

[Geological Survey BE @GSBelgium]

Starting today, one fun fact about geology for each year of the #GSBelgium, a photo contest to showcase the geo-beauty of Belgium, an anniversary event and much more!
Stay tuned via #GSB125GeoFacts #GSB125GeoPHOTOcontest
#GSBelgium125
All details on our new website - link in bio

[Geological Survey BE @GSBelgium]

Geoscientists use photography to capture important information in the field. To celebrate 125 years of the GSB, we are launching the #GSB125GeoPHOTOcontest! Share with us your most inspiring field photos and compete for the golden prize 🏆⚒️
All info on https://t.co/SVTS3XPjve

[Xavier Devleeschouwer @xdevleeschouwer]

@rateandstace @KristelChanard @FleitoutL Sounds really interesting, i'm downloading the preprint