TS
Tectonics and Structural Geology

Oceanic ridges

TS Must-Read – Cannat et al. (2006) Modes of seafloor generation at a melt-poor ultraslow-spreading ridge

January 18, 2023
TS Must-Read – Cannat et al. (2006) Modes of seafloor generation at a melt-poor ultraslow-spreading ridge

For the first time in 2006 Cannat and co-workers described a smooth seafloor type in the mid-ocean ridge located in the SW Indian Ocean (SWIR). The 660-km-long off-axis bathymetry, gravity, and magnetic dataset presented in the study lies near the Rodrigues triple junction (RTJ in Fig. 1). The must read paper expanded the previous conceptual models that considered mid ocean ridges as primarily vol ...[Read More]

Extensional tectonics at oceanic transform faults: a new perspective on plate tectonics

November 24, 2021
Extensional tectonics at oceanic transform faults: a new perspective on plate tectonics
Viscosity structure of the oceanic transform fault revealed by geodynamic simulations. Credit: Grevemeyer et al., 2021.

Yu Ren is a PhD candidate at GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany. He uses three primary tools to study marine tectonics: geomorphology, seismology, and numerical modelling. His PhD project is on the structural and tectonic characterization of oceanic transform faults.   Oceanic transform faults (OTFs), usually considered as first-order tectonic segmentation of mid-ocean r ...[Read More]

Minds over Methods: What controls the shape of oceanic ridges?

November 27, 2018
Minds over Methods: What controls the shape of oceanic ridges?
Bathymetry of an oceanic ridge. Credit: Ryan et al., 2009

In this edition of Minds over Methods, Aurore Sibrant, postdoc at Bretagne Occidentale University (France) explains how she studies the shape of oceanic ridges, and which parameters are thought to control this shape. By using laboratory experiments combined with observations from nature, she gives new insights into how spreading rates and lithosphere thickness influence the development of oceanic ...[Read More]