In the past it was thought that the boundary between continental and oceanic crust at the edge of the ocean basins was close to the edge of the flat “abyssal plains”, but over the past 20 years it has been revealed that true oceanic crust is often not present until much further out into the… Read More Searching for the limits of the continents
Stephan Ker from Ifremer (the French national institute for marine research) and co-authors including Graham Westbrook and Tim Minshull from G&G have published a paper in Geophysical Journal International that uses novel deep-towed seismic data and a novel technique to infer the detailed properties of gas pockets in marine sediments. The seismic data were collected… Read More Fine-scale gas distribution in marine sediments assessed from deep-towed seismic data
Kate Rychert and Nick Harmon have a new paper published in Earth and Planetary Science Letters about seismic imaging of crust and mantle discontinuity structure beneath the Galapagos Archipelago. They image a lithosphere-asthenosphere boundary that is too thick to be consistent with a thermally defined plate, indicating a compositional component. They also image discontinuities related… Read More Seismic imaging of lithospheric structure and the onset of melting beneath Galapagos
Catherine Annen from Bristol University, with Tim Minshull and former PhD student Michele Paulatto from G&G, have published a paper in the Journal of Petrology in which they estimate on different timescales the rate that magma flows into the magma storage region beneath the active Soufriere Hills Volcano. They use computer models of magma chamber… Read More Magma fluxes at Soufrière Hills Volcano, Montserrat
Five PhD students from the Geology and Geophysics research group presented their work at the annual British Geophysical Association Postgraduate Research in Progress Meeting, hosted by the University of Cambridge. Seismologists, Ryan Gallacher, Thomas Hall and Saikiran Tharimena, and exploration geophysicists Kelvin Amalokwu and Melis Cevatoglu presented a broad range of work from imaging deep… Read More British Geophysical Association Postgraduate Research in Progress Meeting 2013