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Spring 2010
Human activities have profoundly altered the biogeochemical cycle of many elements including mercury (Hg). Since ~1850 AD, industrial processes are suggested to have led to a 3-fold increase in Hg deposition above natural, pre-industrial levels. Despite extensive historical evidence for...
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Electrical Resistivity Structure of the Altiplano-Puna Magma Body and Volcan Uturuncu from Magnetotelluric Data
DownloadFall 2015
An intense episode of silicic volcanism in the Southern Altiplano over the past ten million years has created a major volcanic province in the Central Andes known as the Altiplano-Puna Volcanic Complex (APVC). Geophysical evidence indicates that magma is still present in a large mid-crustal...
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Fall 2017
The central Andes (18° - 26°S) is an active Cordilleran orogen, formed through the subduction of the Nazca oceanic plate beneath the South American continent. Despite significant tectonic crustal shortening and thickening (60 -70 km), deep seismic imaging indicates a thin to absent mantle...