Seismometer Deployments for the PULSE and CAUGHT projects

Fieldwork in Peru In Fall, 2010, students, faculty, and staff from the University of North Carolina at Chapel Hill, the University of Arizona, Yale University, and the Instituto Geofisico de Peru gathered in Cusco, Peru to install stations for two PASSCAL deployments. The first project, "Central Andean Uplift and the Geodynamics of High Topography", a.k.a. CAUGHT, is an NSF-Continental Dynamics project to look at the timing and causes of uplift of the Altiplano Plateau. The Altiplano Plateau is second only to the Tibetan Plateau in size, but did not result from continent-continent collision as is the case for the Tibetan Plateau. The second project, "Peru Lithosphere and Slab Experiment", or PULSE, is an NSF-Geophysics funded project to investigate the causes and consequences of flat-slab subduction. Flat-slab subduction occurs when the downgoing oceanic plate subducts normally to a depth of ~100 km and then flattens, traveling horizontally for several hundred kilometers before resuming its descent into the mantle. This type of subduction geometry is present today in southern Peru, and a similar geometry is often inferred to be responsible for the formation of the Rocky Mountains in the western United States during the Laramide Orogeny.

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