Dear Colleagues,
We would like to invite you to submit your recent work to session T046: Shaping Slow- and Ultraslow-Spreading Seafloor with Faults, Magma, and Fluids at this years Fall Meeting of AGU in San Francisco. See below for the session abstract.
Deadline for abstract submission: July 31, 2019
Link to session: https://agu.confex.com/agu/fm19/prelim.cgi/Session/82795
Abstract
Crustal accretion at slow- and ultraslow spreading ridges is fundamentally different from that at faster spreading ridges, and accounts for vast areas of the Atlantic, Indian and Arctic Oceans. Plate separation in these settings occurs in a thick brittle lithosphere and is accommodated by a combination of magmatic and tectonic extension, leading to deformation often dominated by large-offset detachment faults. The ridge magma supply is highly variable in space and time, and the seafloor has a diverse range of morphologies including corrugated domes, non-corrugated massifs, back-tilted fault breakaways, and broad smooth hills. Despite recent advances in seafloor observations and modeling techniques, the mechanics of this mode of seafloor spreading remain controversial. We welcome contributions from a broad range of approaches, including geophysical and geological observations, geodynamic modeling, fluid chemistry, seismology, experimental rock mechanics and petrology.
Best,
Eric Mittelstaedt (U. of Idaho)
Manon Bickert (IPGP)
Mathilde Cannat (IPGP)
Jean-Arthur Olive (ENS Paris)