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derekkeir.bsky.social
@derekkeir.bsky.social
210 followers 310 following 53 posts
earthquakes, volcanoes, breaking the continents
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derekkeir.bsky.social
@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
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...
www.frontiersin.org
November 26, 2025 at 7:56 AM
derekkeir.bsky.social
@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
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...
www.frontiersin.org
November 26, 2025 at 7:56 AM
derekkeir.bsky.social
@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
November 26, 2025 at 7:05 AM
derekkeir.bsky.social
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
November 26, 2025 at 6:45 AM
Reposted
sasbrune.bsky.social
⚒️ 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...
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”
November 25, 2025 at 4:42 PM
Reposted
sasbrune.bsky.social
👇 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) 👇
gfz.bsky.social GFZ Helmholtz-Zentrum für Geoforschung @gfz.bsky.social · 17d
Many oceanic islands far from active plate tectonic boundaries contain materials clearly originating from continents, even though they are located in the middle of an oceanic plate. Where do the continental remnants come from? @sasbrune.bsky.social, and lead author Thomas Gernon from 1/5
A mosaic-like picture with many colours showing a thin slice of rock under a microscope. This is a fragment of the lowermost continental mantle — the crystalline roots of the continents. This is the type of material that the authors propose is stripped away and laterally transported into the oceanic mantle. (Photo: Prof. Tom Gernon (University of Southampton).)
November 13, 2025 at 6:07 AM
Reposted
derekkeir.bsky.social
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
November 25, 2025 at 2:34 AM
Reposted
derekkeir.bsky.social
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
November 25, 2025 at 2:29 AM
derekkeir.bsky.social
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
November 25, 2025 at 2:34 AM
derekkeir.bsky.social
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
November 25, 2025 at 2:29 AM
Reposted
sorcerinsar.bsky.social
Basaltic dike in Erta Ale triggers explosive eruption in Hayli Gubbi. Read our new paper!
www.frontiersin.org/journals/ear...
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...
www.frontiersin.org
November 25, 2025 at 1:54 AM
Reposted
simoncarn.bsky.social
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.
November 23, 2025 at 5:23 PM
Reposted
derekkeir.bsky.social
Advert for geophysics / tectonics PhD on the Corinth rift advertised now @unisouthampton.bsky.social
www.findaphd.com/phds/project...
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
www.findaphd.com
November 13, 2025 at 12:22 PM
Reposted
derekkeir.bsky.social
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...
November 13, 2025 at 12:16 PM
derekkeir.bsky.social
Advert for geophysics / tectonics PhD on the Corinth rift advertised now @unisouthampton.bsky.social
www.findaphd.com/phds/project...
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
www.findaphd.com
November 13, 2025 at 12:22 PM
derekkeir.bsky.social
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...
November 13, 2025 at 12:16 PM
Reposted
sasbrune.bsky.social
⚒️ 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...
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
October 28, 2025 at 7:28 AM
Reposted
derekkeir.bsky.social
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
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 …
www.sciencedirect.com
October 18, 2025 at 5:42 AM
derekkeir.bsky.social
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
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 …
www.sciencedirect.com
October 18, 2025 at 5:42 AM
Reposted
sorcerinsar.bsky.social
When Italian airports have an edge!
August 30, 2025 at 6:46 PM
derekkeir.bsky.social
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...
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...
www.frontiersin.org
October 8, 2025 at 7:36 AM
Reposted
alarosa.bsky.social
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
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...
se.copernicus.org
October 7, 2025 at 7:17 AM
Reposted
sasbrune.bsky.social
⚒️ Interested in the latest analog modelling advances for understanding rifts? ⚒️

Join our #RiftAndRiftedMarginsSeminar with Valentina Armeni, Timothy Schmid, & Daniele Maestrelli

Monday, Oct 6th, 4 pm CEST

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

Past talks
www.youtube.com/@riftandrift...
October 6th: “Analog modelling of rifting processes” 16:00 Valentina Armeni (University of Potsdam) - Analog and DEM modeling of magma pathways and volcano distribution between adjacent rift segments 16:20 Timothy Schmid (University of Bern) - Rift-axis parallel lower-crustal flow and its implication on rift propagation: A quantitative view of rift dynamics from analogue models 16:40: Daniele Maestrelli (CNR Florence) - Rifting triple junctions: insights from modelling on the Afar RRR junction
September 30, 2025 at 9:54 AM
Reposted
derekkeir.bsky.social
The fully published version of a comparison of seismic v geodetic moment rate of Afar and Corinth rifts available at authors.elsevier.com/c/1lodn_wVTd...
@sorcerinsar.bsky.social
authors.elsevier.com
September 20, 2025 at 7:02 AM
derekkeir.bsky.social
The fully published version of a comparison of seismic v geodetic moment rate of Afar and Corinth rifts available at authors.elsevier.com/c/1lodn_wVTd...
@sorcerinsar.bsky.social
authors.elsevier.com
September 20, 2025 at 7:02 AM