Understanding the global pattern of glaciation can aid interpretation of what caused late-Pleistocene glacial cycles. Here I investigate the glacial history of the Khumbu Glacier of the Mount Everest region of Nepal. Prominent hypotheses for Himalayan glaciation suggest importan…
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A Faixa Piritosa Ibérica é uma das províncias metalogenéticas mundiais mais estudadas e a sua prospecção e exploração extensivamente documentadas. Mesmo após mais de 5000 anos de contínua exploração mineira, as reservas demonstradas continuam excepcionalmente altas, embora confi…
Red siliciclastics and evaporites of Permian Nippewalla Group in mid-continental US were deposited in western equatorial Pangea. Previous studies of these rocks record Permian air temperatures as high as 73 °C, saline lake waters with a pH as low as ~1, and sedimentology that sh…
The Battle Mountain mining district in north-central Nevada hosts deposits of magmatic-hydrothermal origin, including porphyry, skarn, and distal disseminated deposits, as well as sedimentary-rock hosted Au deposits of uncertain origin. This dissertation examines the ages of mag…
Fiordland, New Zealand provides an opportunity to study the complex relationship between magmatism and metamorphism in the lower crust of a magmatic arc. The Eastern McKerr Intrusives, which are well exposed along George Sound, are a constituent of the Western Fiordland Orthogne…