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J.-A. Olive @jaodynamics

Geodynamicist @Geosciences_ENS / @CNRS. I stretch, squeeze and break *theoretical* tectonic plates for a living.

Joined May 2013
  • Tweets 1,225
  • Following 1,077
  • Followers 1,131
476 Photos and videos
J.-A. Olive retweeted
AGU's Eos@AGU_Eos
10 Jun 2024
How do tiny cracks lead to large faults? @jaodynamics, @leo_petit1, and other @Geosciences_ENS and @Sorbonne_Univ_ collaborators take a closer look at this question. eos.org/research-spotlights/…

How Tiny Cracks Lead to Large-Scale Faults - Eos

Researchers could soon gain new insights into fault development in Earth’s brittle crust, thanks to a computational approach that harnesses experimental observations of microscale rock damage.

eos.org
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J.-A. Olive retweeted
École normale supérieure | PSL@ENS_ULM
31 May 2024
#VendrediLecture 🌊 La spécialité de Kim Moutard ? Les grandes profondeurs. Étudiante @Geosciences_ENS @psl_univ, elle s’intéresse à la dynamique des systèmes géologiques et magmatiques actifs au fond des océans. Rencontre 👇psl.pulse.ly/pesczio3ix
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J.-A. Olive retweeted
Caroline Gini@caroline_gini
8 May 2024
The documentary is out, from our #arc_en_sub expedition to the Rainbow #hydrothermalventfield two years ago! 🌈🌊 In French with English subtitles @escartin , Muriel Andréani @MemorialUSci @MUN_EarthSci
Observatoire de Lyon@obslyon
7 May 2024
🌊 DOCUMENTAIRE Il y a deux ans, une équipe internationale était à bord du Pourquoi Pas ? pour la campagne #ARC_EN_SUB. Le but : étudier le massif sous-marin de Rainbow et ses sources hydrothermales. Replongez avec le #LabexLIO dans cette aventure : ➡️ youtube.com/watch?v=_2xD2fuD…
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Interested in rifting continents? Check out the many #PhD opportunities offered by the #TALENTS Doctoral Network, including one @Geosciences_ENS on short-term strain distribution across active rifts (DC8) talents-dn.eu/projects
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New paper out in @ScienceAdvances! Here our very talented former postdoc @bar_oryan establishes a link between diffuse upper plate seismicity and long-term deformation encoded in subduction landscapes. Congrats, Bar! science.org/doi/10.1126/scia… @_geoLuca @boris_gailleton @seismolucy

Megathrust locking encoded in subduction landscapes

Interseismic locking on megathrusts permanently strains the overriding plate, leaving a distinct landscape footprint.

science.org
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J.-A. Olive retweeted
CNRS Terre & Univers@CNRS_INSU
18 Apr 2024
#RésultatScientifique Les collines abyssales se forment non pas comme des marches d’escalier, mais comme des marches d’escalator, qui s’ouvrent, puis se referment à mesure que les reliefs migrent sur le tapis roulant des plaques tectoniques. ⤵️ insu.cnrs.fr/fr/cnrsinfo/un-…
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J.-A. Olive retweeted
nature
@Nature
11 Apr 2024
Nature research paper: Mid-ocean ridge unfaulting revealed by magmatic intrusions go.nature.com/3VQ7t8j

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New paper out in @Nature today! Turns out #MidOceanRidges can still surprise us… 👇🏻 nature.com/articles/s41586-0…

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more replies
What’s neat is that the 2022 swarm revealed a mechanism that leaves a significant mark on the fabric of the ocean floor: Mid-ocean ridges operate much like escalators, shaping step-like hills that first grow, then partially close as they move off-axis.
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Beyond the implications for Earth’s physiography, our results raise a bunch of new questions, for example on how shallow reverse quakes nucleate in a bending plate that’s (probably) full of fluids… so stay tuned for follow-up work!
staircase-like bathymetry of the Mid-Atlantic Ridge

ALT staircase-like bathymetry of the Mid-Atlantic Ridge
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so… turns out there was a bit more to it nature.com/articles/s41586-0… @zlliu_GEO @escartin @BickertManon

J.-A. Olive@jaodynamics
29 Sep 2022
The Mid-Atlantic Ridge is lighting up! Seismicity started on Monday near the Charlie-Gibbs transform, with an M5.8 normal faulting event. Has been migrating south at ~1 km/hr since then. A once-in-50-yr dike intrusion event? (EQs relocation courtesy of G. Ekstrom @LamontEarth) 🌋
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J.-A. Olive retweeted
Milena Marjanović@marjanovic_m
14 Nov 2023
Everything is ready for the first InterRidge-France Workshop at @IPGP_officiel Big thanks to IPGP communication team 👏 #INSU_CNRSfunded sites.google.com/view/interr…
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J.-A. Olive retweeted
Jie Chen 陈杰@JieChen_geo
31 Oct 2023
Check out our recent paper @PNASNews: "Beyond spreading rate: Controls on the thermal regime of mid-ocean ridges", from @IPGP_officiel @univ_paris_cite @Geosciences_ENS Paper Link: pnas.org/eprint/IV8FAKECWZRR… Video below: Cyclic melt supply at a melt-rich ultraslow spreading ridge
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