GD
Geodynamics

edited by Betti Hegyi

Betti Hegyi third-year PhD student at ETH Zürich, in the Structural Geology and Tectonics group. Her work focuses on earthquake cycle modeling and the effects of fluids in seismic events. She is interested in topics related to tectonics, lithosphere dynamics and fault mechanics.

A New Look at the Rheology of Deep Subduction Zones

and November 27, 2024
A New Look at the Rheology of Deep Subduction Zones
Field photos of shear zones from Syros Island, Greece. Photo credit: Ana Lorena Abila

Subduction zones are dynamic regions where intense geological processes like earthquakes, volcanic eruptions, and the recycling of oceanic crust are constantly at play. A key factor that influences the behavior of these zones is *interface rheology*—the strength and viscosity of the boundary (the interface) between the subducting and overriding plates. Understanding this interface is crucial for i ...[Read More]

Biogeodynamics – Let’s model the entire world!

and May 15, 2024
Biogeodynamics – Let’s model the entire world!

All models are wrong, but some are useful – we all have heard this quote. But it raises several questions (including but not limited to) – What would a model of the entire world look like? Can you couple geodynamical models with climate and biological evolution models? Would these models be useful? In this week’s blog post, Timothy Gray, a PhD student from ETH Zürich is looking for ans ...[Read More]

H2 production associated with mantle wedge hydration in subduction zones

and February 14, 2024
H2 production associated with mantle wedge hydration in subduction zones
Zoom in the H2 production zone. (Image credit: Alexis Gauthier)

Dihydrogen (H2) is a promising source of energy that may allow reducing carbon emissions in industry and transportation. Artificial production methods have been explored, natural sources of H2 (also called white dihydrogen) offer a more eco-friendly and cost-effective production process. In this week’s blog post, Alexis Gauthier, a PhD student from ISTeP, France, is discussing the H2 production pr ...[Read More]

Geoscience in Alaska: From Fjords to Flysch

and October 25, 2023
Geoscience in Alaska: From Fjords to Flysch

In this week’s blog post, one of our blog illustrators, Emily Hinshaw will take us on a journey to the faraway land of Alaska, which is well known for its rugged terrain, exciting wildlife, and being very remote. Despite these challenges, and many others, Emily loves this work and feels very lucky to be part of the research team which explores the geology and geodynamics of the region!  Alaska is ...[Read More]