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The effect of metamorphism on the trace element composition of subducted oceanic crust and sediment
Metasedimentary and metabasaltic rocks of the Pelona schist of Sierra Pelona, southern California, preserve a relatively high P/T inverted metamorphic gradient (Graham and Powell, 1984) and provide an opportunity to study ...
Geology and stratigraphy of the Mount Bennett Hills, and the origin of west-central Snake River Plain rhyolites
Voluminous mid-Miocene (8-13 Ma) rhyolitic ash-flows and lava flows (Idavada volcanics) are exposed continuously along the northern (Mount Bennett Hills or MBH) and southern margins of the west-central Snake River Plain ...
Infrared spectroscopy of Mars
When measured with sufficient spectral range, resolution, and signal-to-noise ratio, nearly every mineral has a unique infrared spectral signature. However, determining which minerals are present on Mars using infrared ...
Petrogenesis of late Cenozoic volcanic rocks from the Raton-Clayton volcanic field, northeastern New Mexico and southeastern Colorado
Late Cenozoic volcanism on the Great Plains in northeastern New Mexico was closely related to the tectonic and thermal deformation along the transitional zone between the Colorado Plateau and southern Basin and Range ...
Investigation on the generation of primitive basalts in the southern Washington Cascades
An investigation of the petrography, mineralogy and chemistry of primitive basalts found in a E-W transect of southern Washington and northern Oregon provides constraints concerning the thermal structure and composition ...