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@derekkeir.bsky.social

earthquakes, volcanoes, breaking the continents

214 Followers  |  310 Following  |  54 Posts  |  Joined: 22.01.2025  |  2.2563

Latest posts by derekkeir.bsky.social on Bluesky

16:00 Daniel Sauter (University of Strasbourg, France)
“Was the mantle warmer when Pangea broke up? Insights from initial oceanic crustal thickness alongside the rifted margins of the Atlantic and Indian oceans”

16:20 Éva Oravecz (Eötvös Loránd University, Hungary and ETH, Switzerland)
“The effects of oblique rifting on the syn-rift magmatism and spreading initiation”

16:40 Leila Mezri (University of Bremen – MARUM, Germany)
“Tectonic controls on melt production and crustal architecture during magma-poor seafloor spreading”

16:00 Daniel Sauter (University of Strasbourg, France) “Was the mantle warmer when Pangea broke up? Insights from initial oceanic crustal thickness alongside the rifted margins of the Atlantic and Indian oceans” 16:20 Éva Oravecz (Eötvös Loránd University, Hungary and ETH, Switzerland) “The effects of oblique rifting on the syn-rift magmatism and spreading initiation” 16:40 Leila Mezri (University of Bremen – MARUM, Germany) “Tectonic controls on melt production and crustal architecture during magma-poor seafloor spreading”

⚒️ How does seafloor spreading initiate when continents break apart? ⚒️

Find out in our next #RiftAndRiftedMarginsSeminar

on Feb 2nd 2026, 4 pm CET

with Daniel Sauter,
Éva Oravecz,
Leila Mezri

Register
uni-potsdam.zoom-x.de/meeting/regi...

Past talks
www.youtube.com/@riftandrift...

27.01.2026 07:30 — 👍 10    🔁 3    💬 0    📌 0
January 5th: “Sources of rift inheritance”

16:00 CET: Mélanie Ballay (University of Strasbourg, France) 
“Mantle inheritance and mantle-melt interaction, two key factors in the lithospheric break-up: insights from the Australia-Antarctica magma-poor rifted margins"

16:20 CET: Jeffrey Pollock (Mount Royal University, Canada)
“The influence of orogenic collapse and tectonic inheritance on continental break-up: insights from seismic anisotropy in the lithospheric mantle"

16:40 CET: Zoltán Erdős (University of Potsdam, Germany)
“The influence of orogenic inheritance on rift dynamics - a numerical modeling perspective”

January 5th: “Sources of rift inheritance” 16:00 CET: Mélanie Ballay (University of Strasbourg, France) “Mantle inheritance and mantle-melt interaction, two key factors in the lithospheric break-up: insights from the Australia-Antarctica magma-poor rifted margins" 16:20 CET: Jeffrey Pollock (Mount Royal University, Canada) “The influence of orogenic collapse and tectonic inheritance on continental break-up: insights from seismic anisotropy in the lithospheric mantle" 16:40 CET: Zoltán Erdős (University of Potsdam, Germany) “The influence of orogenic inheritance on rift dynamics - a numerical modeling perspective”

⚒️ How does orogenic inheritance affect rifting and continental break-up? ⚒️

Find out in our next #RiftAndRiftedMarginsSeminar

on Jan 5th 2026, 4 pm CET

with Mélanie Ballay,
Jeffrey Pollock,
Zoltán Erdős

Register
uni-potsdam.zoom-x.de/meeting/regi...

Past talks
www.youtube.com/@riftandrift...

29.12.2025 18:30 — 👍 6    🔁 2    💬 0    📌 0
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On board the Gaia Blu research ship of the CNR Italy today in Livorno @sorcerinsar.bsky.social

22.12.2025 07:42 — 👍 4    🔁 2    💬 0    📌 0
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On board the Gaia Blu research ship of the CNR Italy today in Livorno @sorcerinsar.bsky.social

22.12.2025 07:42 — 👍 4    🔁 2    💬 0    📌 0
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Alex Whittaker and @rehachandresh.bsky.social on @talents-dn.bsky.social fieldwork in Dobi graben if Afar Looking at a fault breccia in a normal fault zone. #tectonics #geology
@sasbrune.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social

26.11.2025 06:45 — 👍 9    🔁 3    💬 0    📌 0
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@rehachandresh.bsky.social at a sheeted dike swarm of the www.afarstratoid.com during @talents-dn.bsky.social fieldwork. @seismatters.bsky.social @sasbrune.bsky.social @sorcerinsar.bsky.social @gimmi-p.bsky.social

26.11.2025 07:00 — 👍 9    🔁 3    💬 1    📌 0
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Frontiers | Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa) IntroductionDike intrusions can assist continental rifting and plate divergence. However, our understanding of the magma dynamics during diking and the archi...

@alarosa.bsky.social new paper of dike intrusion at Erta Ale in July 2025 now out
www.frontiersin.org/articles/10.... @sorcerinsar.bsky.social @sasbrune.bsky.social @wattsvolcanology.bsky.social

26.11.2025 07:54 — 👍 10    🔁 5    💬 0    📌 0
Preview
Frontiers | Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa) IntroductionDike intrusions can assist continental rifting and plate divergence. However, our understanding of the magma dynamics during diking and the archi...

@alarosa.bsky.social new paper of dike intrusion at Erta Ale in July 2025 now out
www.frontiersin.org/articles/10.... @sorcerinsar.bsky.social @sasbrune.bsky.social @wattsvolcanology.bsky.social

26.11.2025 07:54 — 👍 10    🔁 5    💬 0    📌 0
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@rehachandresh.bsky.social at a sheeted dike swarm of the www.afarstratoid.com during @talents-dn.bsky.social fieldwork. @seismatters.bsky.social @sasbrune.bsky.social @sorcerinsar.bsky.social @gimmi-p.bsky.social

26.11.2025 07:00 — 👍 9    🔁 3    💬 1    📌 0
Post image

Alex Whittaker and @rehachandresh.bsky.social on @talents-dn.bsky.social fieldwork in Dobi graben if Afar Looking at a fault breccia in a normal fault zone. #tectonics #geology
@sasbrune.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social

26.11.2025 06:45 — 👍 9    🔁 3    💬 0    📌 0
16:00 Sarah Stamps (Virginia Polytechnic, U.S.A.)
“Open Access GNSS datasets for investigations of extensional settings”

16:20 Carolina Pagli (University of Pisa, Italy)
“InSAR insights into earthquakes and volcanoes of the East African Rift”

16:40 James Wood (Imperial College London, U.K.)
“Resolving coseismic and aseismic normal fault slip behaviours from InSAR time series: examples from Central Greece”

16:00 Sarah Stamps (Virginia Polytechnic, U.S.A.) “Open Access GNSS datasets for investigations of extensional settings” 16:20 Carolina Pagli (University of Pisa, Italy) “InSAR insights into earthquakes and volcanoes of the East African Rift” 16:40 James Wood (Imperial College London, U.K.) “Resolving coseismic and aseismic normal fault slip behaviours from InSAR time series: examples from Central Greece”

⚒️ What can geodetic techniques reveal about continental rifting? ⚒️

Find out in our next #RiftAndRiftedMarginsSeminar

on Dec 1st, 4 pm CET

with Sarah Stamps, @sorcerinsar.bsky.social, James Wood

Register
uni-potsdam.zoom-x.de/meeting/regi...

Past talks
www.youtube.com/@riftandrift...

25.11.2025 16:42 — 👍 5    🔁 4    💬 0    📌 0

👇 A great collaboration with @gernon.bsky.social, Thea Hincks, Martin Palmer (all @unisouthampton.bsky.social), Chris Spencer (Queen’s University), @wattsvolcanology.bsky.social (Swansea University) and Anne Glerum (@gfz.bsky.social) 👇

13.11.2025 06:07 — 👍 13    🔁 5    💬 0    📌 1

Thanks Simon
Your post was super useful yesterday while in the field. Samples have bene collected bsky.app/profile/dere...

25.11.2025 02:38 — 👍 1    🔁 0    💬 0    📌 0
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Hayli Gubbi - some of my photos from the Hayli Gubbi tephra sampling expedition on 24 Nov 2025 from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social @wattsvolcanology.bsky.social @volckaren.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social

25.11.2025 02:33 — 👍 16    🔁 7    💬 0    📌 1
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The Hayli Gubbi tephra has been sampled. These are photos from my sampling expedition on 24 Nov with the University of Semera from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social

25.11.2025 02:29 — 👍 37    🔁 14    💬 0    📌 1
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Hayli Gubbi - some of my photos from the Hayli Gubbi tephra sampling expedition on 24 Nov 2025 from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social @wattsvolcanology.bsky.social @volckaren.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social

25.11.2025 02:33 — 👍 16    🔁 7    💬 0    📌 1
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The Hayli Gubbi tephra has been sampled. These are photos from my sampling expedition on 24 Nov with the University of Semera from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social

25.11.2025 02:29 — 👍 37    🔁 14    💬 0    📌 1
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Mirova reporting decreasing hotspot signals from Hayli Gubbi since the eruption on 23 November 2025

25.11.2025 02:22 — 👍 3    🔁 1    💬 0    📌 0
Preview
Frontiers | Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa) Dike intrusions can assist continental rifting and plate divergence. However, our understanding of the magma dynamics during diking and the architecture of t...

Basaltic dike in Erta Ale triggers explosive eruption in Hayli Gubbi. Read our new paper!
www.frontiersin.org/journals/ear...

25.11.2025 01:54 — 👍 11    🔁 2    💬 1    📌 1
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An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.

23.11.2025 17:23 — 👍 240    🔁 103    💬 11    📌 19
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Faulting, earthquakes and fluid flow during continental extension at University of Southampton on FindAPhD.com PhD Project - Faulting, earthquakes and fluid flow during continental extension at University of Southampton, listed on FindAPhD.com

Advert for geophysics / tectonics PhD on the Corinth rift advertised now @unisouthampton.bsky.social
www.findaphd.com/phds/project...

13.11.2025 12:22 — 👍 2    🔁 2    💬 0    📌 0
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Advert and application information for PhD on magma production and evolution during continental rifting @unisouthampton.bsky.social @sorcerinsar.bsky.social @wattsvolcanology.bsky.social
www.findaphd.com/phds/project...

13.11.2025 12:16 — 👍 3    🔁 3    💬 0    📌 0
Preview
Faulting, earthquakes and fluid flow during continental extension at University of Southampton on FindAPhD.com PhD Project - Faulting, earthquakes and fluid flow during continental extension at University of Southampton, listed on FindAPhD.com

Advert for geophysics / tectonics PhD on the Corinth rift advertised now @unisouthampton.bsky.social
www.findaphd.com/phds/project...

13.11.2025 12:22 — 👍 2    🔁 2    💬 0    📌 0
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Advert and application information for PhD on magma production and evolution during continental rifting @unisouthampton.bsky.social @sorcerinsar.bsky.social @wattsvolcanology.bsky.social
www.findaphd.com/phds/project...

13.11.2025 12:16 — 👍 3    🔁 3    💬 0    📌 0
November 3rd: “Topography data and rift processes”

16:00 Reha Chandresh (University of Florence) - Spatio-temporal fault evolution patterns in magma-rich rifts using quantitative geomorphology - insights from Central Afar, Ethiopia

16:20 Ramon Arrowsmith (Arizona State University) - Topography Data and Rift Processes: mapping, landscape reconstruction, tectonic geomorphology, and topographic differencing

16:40 David Fernández-Blanco (Chinese Academy of Sciences) - Decoding continental rift mechanics with uplifted relief

November 3rd: “Topography data and rift processes” 16:00 Reha Chandresh (University of Florence) - Spatio-temporal fault evolution patterns in magma-rich rifts using quantitative geomorphology - insights from Central Afar, Ethiopia 16:20 Ramon Arrowsmith (Arizona State University) - Topography Data and Rift Processes: mapping, landscape reconstruction, tectonic geomorphology, and topographic differencing 16:40 David Fernández-Blanco (Chinese Academy of Sciences) - Decoding continental rift mechanics with uplifted relief

⚒️ What does rift topography reveal about tectonic, magmatic and surface processes? ⚒️

Nov 3rd, 4 pm CET
#RiftAndRiftedMarginsSeminar
with
@rehachandresh.bsky.social
@jrarrowsmith.bsky.social
David Fernández-Blanco

Register
uni-potsdam.zoom-x.de/meeting/regi...

www.youtube.com/@riftandrift...

28.10.2025 07:28 — 👍 10    🔁 3    💬 0    📌 1
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Subsurface magmatic structure beneath the nested Awasa-Corbetti caldera complex, Main Ethiopian Rift, as determined from gravity data The nested Awasa–Corbetti caldera complex (ACC) in the central Main Ethiopian Rift (MER) encompasses the Corbetti caldera complex, which is presently …

Interested in geothermal resources in East Africa? If so then have a read of this new paper on the use of gravity data at Corbetti volcano in Ethiopia by Simeneh Wassihun
www.sciencedirect.com/science/arti... @robrizzo.bsky.social @rvinews.bsky.social @afardalloldrilling.bsky.social

18.10.2025 05:42 — 👍 8    🔁 2    💬 0    📌 0
Preview
Subsurface magmatic structure beneath the nested Awasa-Corbetti caldera complex, Main Ethiopian Rift, as determined from gravity data The nested Awasa–Corbetti caldera complex (ACC) in the central Main Ethiopian Rift (MER) encompasses the Corbetti caldera complex, which is presently …

Interested in geothermal resources in East Africa? If so then have a read of this new paper on the use of gravity data at Corbetti volcano in Ethiopia by Simeneh Wassihun
www.sciencedirect.com/science/arti... @robrizzo.bsky.social @rvinews.bsky.social @afardalloldrilling.bsky.social

18.10.2025 05:42 — 👍 8    🔁 2    💬 0    📌 0
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When Italian airports have an edge!

30.08.2025 18:46 — 👍 3    🔁 1    💬 0    📌 0
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Frontiers | The first observation of seismicity beneath the northwestern Ethiopian plateau and its seismotectonic implications The seismotectonics of the Northwestern (NW) Ethiopian plateau and the adjacent rift flanks were studied using local earthquake data recorded by broadband se...

This new paper by Sisay Alemaheyu of Addis Ababa University shows that there are earthquakes beneath the Ethiopian plateau, far away from the East African rift. Distributed extension.
@afardalloldrilling.bsky.social @rvinews.bsky.social
www.frontiersin.org/journals/ear...

08.10.2025 07:36 — 👍 4    🔁 1    💬 0    📌 0
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Cross-scale strain analysis in the Afar rift (East Africa) from automatic fault mapping and geodesy Abstract. The formation of continental rift systems is characterised by the interplay of magmatic and tectonic processes. Their evolution involves a wide range of timescales, from centennial scales of...

Our new study on @egu.eu SE combines automatic fault mapping, geodesy and rock dating to reconstruct the tectonic and magmatic evolution of the Afar rift during the last 4.5 Myrs. @sasbrune.bsky.social @sorcerinsar.bsky.social @derekkeir.bsky.social @gimmi-p.bsky.social @earth-science.bsky.social

07.10.2025 07:17 — 👍 19    🔁 7    💬 0    📌 1

@derekkeir is following 20 prominent accounts