J.-A. Olive

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

[AGU's Eos @AGU_Eos]

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.
https://t.co/GzB9SE55Zw

[École normale supérieure | PSL @ENS_ULM]

#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 👇https://t.co/1PweeSBJQH

[Caroline Gini @caroline_gini]

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

[J.-A. Olive @jaodynamics]

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) https://t.co/1kIuZbJKZY

[J.-A. Olive @jaodynamics]

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! https://t.co/nRED4VcOdg @_geoLuca @boris_gailleton @seismolucy

[CNRS Terre & Univers @CNRS_INSU]

#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.
⤵️
https://t.co/wGLzR6llhT

[nature @Nature]

Nature research paper: Mid-ocean ridge unfaulting revealed by magmatic intrusions https://t.co/ECaBV8AGmw

[J.-A. Olive @jaodynamics]

@GeoNickHayman @zlliu_GEO @escartin @BickertManon at some point you gotta invoke those high fluid pressures or it’s not really geology

[J.-A. Olive @jaodynamics]

so… turns out there was a bit more to it https://t.co/rhi7IR2dj9 @zlliu_GEO @escartin @BickertManon

[J.-A. Olive @jaodynamics]

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) 🌋

[J.-A. Olive @jaodynamics]

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!

[J.-A. Olive @jaodynamics]

New paper out in @Nature today! Turns out #MidOceanRidges can still surprise us… 👇🏻 https://t.co/rhi7IR2dj9

[J.-A. Olive @jaodynamics]

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.

[Milena Marjanović @marjanovic_m]

Everything is ready for the first InterRidge-France Workshop at @IPGP_officiel
Big thanks to IPGP communication team 👏 #INSU_CNRSfunded

https://t.co/eywAwFWBCS

[Jie Chen 陈杰 @JieChen_geo]

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: https://t.co/WD52mQXglB
Video below: Cyclic melt supply at a melt-rich ultraslow spreading ridge