Edward W. Marshall
@edmarshall.bsky.social
🌋 Geochemistry Postdoc at FAU Erlangen-Nürnberg in 🇩🇪. Studies Icelandic volcanism, magmas, and the mysteries of Earth's mantle.
Phew--- looks like the earthquake swarm at the tip of the Reykjanes sputtered out. An eruption there would come straight through the geothermal field and power plant there, so it would be devastating! Although magma injection is probably good for the longevity of the geothermal reservoir!
March 13, 2025 at 6:28 PM
Phew--- looks like the earthquake swarm at the tip of the Reykjanes sputtered out. An eruption there would come straight through the geothermal field and power plant there, so it would be devastating! Although magma injection is probably good for the longevity of the geothermal reservoir!
Looks like interplanetary controls 😂
December 13, 2024 at 4:25 PM
Looks like interplanetary controls 😂
In all, the image that our work puts together is that the base of the crust on the Reykjanes Peninsula is a really exciting place right now. Lots of magma on the move, and a volcanic system in the process of “reawakening”.
7/8
7/8
November 28, 2024 at 8:12 AM
In all, the image that our work puts together is that the base of the crust on the Reykjanes Peninsula is a really exciting place right now. Lots of magma on the move, and a volcanic system in the process of “reawakening”.
7/8
7/8
The trace element and isotope composition of the later 2021 Fagradalsfjall lavas are like unlike anything known to have erupted in Iceland before. The lava lie entirely off the compositional “Iceland array”. These lavas have the lowest 143Nd/144Nd of any Icelandic rift basalt!
4/8
4/8
November 28, 2024 at 8:11 AM
The trace element and isotope composition of the later 2021 Fagradalsfjall lavas are like unlike anything known to have erupted in Iceland before. The lava lie entirely off the compositional “Iceland array”. These lavas have the lowest 143Nd/144Nd of any Icelandic rift basalt!
4/8
4/8
We can use the compositions of the minerals and the lava to calculate what depth the eruption is sourced from. We find that the eruption is sourced from close to the crust-mantle boundary- the place where melts ascending from the mantle “meet up” to make big magma bodies.
3/8
3/8
November 28, 2024 at 8:10 AM
We can use the compositions of the minerals and the lava to calculate what depth the eruption is sourced from. We find that the eruption is sourced from close to the crust-mantle boundary- the place where melts ascending from the mantle “meet up” to make big magma bodies.
3/8
3/8
We find that erupted lava compositions change rapidly, with large geochemical changes occurring even between two trips to the eruption. By “large” I mean larger than all mantle geochemical variability observed in the entire previous cycle of eruptions on the Reykjanes.
2/8
2/8
November 28, 2024 at 8:09 AM
We find that erupted lava compositions change rapidly, with large geochemical changes occurring even between two trips to the eruption. By “large” I mean larger than all mantle geochemical variability observed in the entire previous cycle of eruptions on the Reykjanes.
2/8
2/8
Post a picture you took (no description) to bring some zen to the timeline.
November 17, 2024 at 7:16 AM
Post a picture you took (no description) to bring some zen to the timeline.
An eruption might be brewing on the Reykjanes. There's been a sill inflating for the past weeks, and it may have finally reached a tipping point and made a dike. Well see if the dike makes it to the surface, but hopefully not!
November 10, 2023 at 10:13 PM
An eruption might be brewing on the Reykjanes. There's been a sill inflating for the past weeks, and it may have finally reached a tipping point and made a dike. Well see if the dike makes it to the surface, but hopefully not!