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HYDROLOGIC CONTROLS ON NITROGEN CYCLING AND NITRATE TRANSPORT THROUGH THE VADOSE ZONE OF A SUBSURFACE ARTIFICIALLY-DRAINED DRYLAND AGROECOSYSTEM IN THE PALOUSE BASIN OF EASTERN WASHINGTON
Advances in the application of stable isotopes to address environmental issues have led to new understandings of biogeochemical cycles for both natural and agricultural systems. Of particular concern, is understanding ...
POST-CALDERA VOLCANISM IN YELLOWSTONE NATIONAL PARK: PETROGENESIS OF THE INTRACALDERA UPPER BASIN MEMBER OF THE PLATEAU RHYOLITE AND EXTRA-CALDERA MINGLED MAGMA COMPLEXES
The Plateau Rhyolite erupted following the last large Yellowstone caldera collapse and may have erupted from a rejuvenating magmatic system. Our preferred model for rhyolite genesis is by assimilation of continental crust ...
Structure of the arc-continent transition in the Riggins region of west-central Idaho
New U-Pb zircon geochronology from the Riggins region of west-central Idaho refines the timing of synmetamorphic deformation across the Salmon River suture zone, a broad NNE-striking belt (>25 km-wide) of high strain ...
Mapping, geologic evolution and petrogenesis of the McDermitt caldera center, northern Nevada & southern Oregon, USA
The McDermitt caldera center ("McDermitt") is a polygenetic mid-Miocene volcanic center along the border of northern Nevada and southern Oregon, USA, and is one of the first silicic centers associated with the Yellowstone ...
ORIGIN AND EVOLUTION OF A LARGE SILICIC CALDERA COMPLEX: VALLES CALDERA AND THE ASSOCIATED UPPER BANDELIER TUFF
The Jemez Mountains Volcanic Field, New Mexico, has been active for more than 20 Ma and it is a very complex system that has attracted much scientific attention for many decades, but some areas are remain poorly understood. ...