Search
Now showing items 1-8 of 8
Unraveling the fluid-present metamorphism of schists from garnet compositions in the Black Hills, South Dakota
(University of Missouri--Columbia, 2012)
Garnets in Proterozoic metapelites in the Black Hills, South Dakota, were analyzed to determine their pressure, temperature and hydrothermal conditions of growth and to elucidate pressure-temperature-time paths of their ...
Role of Li and B bearing fluids in crystallization and alteration of granitic pegmatites, San Diego, California
(University of Missouri--Columbia, 2014)
The San Diego County pegmatites occur in the Mesozoic Peninsular Ranges Batholith that stretches from southwestern California to Baja California, Mexico. These zoned, lithium-cesium-tantalum type pegmatite dikes intruded ...
Variation and fractionation of lithium isotopes within single tourmaline crystals in the pegmatites of the Black Hills, SD
(University of Missouri--Columbia, 2014)
Extremely large elongated crystals, attributed to low nucleation rates and rapid growth during fast cooling (Nabelek et al., 2010), are just one example of the intriguing and unusual disequilibrium features found in granitic ...
Composition of magmatic fluids in the Harney Peak granite, Black Hills, South Dakota
(University of Missouri--Columbia, 2013)
Fluid inclusions are potential trapped samples of magmatic fluids, and they therefore provide a way to directly measure the composition of magmatic fluids. Understanding the composition of magmatic fluids is important ...
Petrogenesis of the main petrologic and chronologic volcanic phases in the Charyan Province, NW Libya
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Gharyan Volcanic Province (GVP) is one of the four major Cenozoic volcanic provinces, together with Jabal as Sawda, Jabal Al Haruj, and Jabal Nuqay, ...
Geochemistry, petrogenesis and tectonic setting of igneous rocks of the Hartville uplift, Eastern Wyoming
(University of Missouri--Columbia, 2016)
The location of the eastern margin of the Wyoming Archaean Province and its Proterozoic evolution are still debated. Previous studies have attributed north-south and east-west directed structures to the Proterozoic Black ...
Influences of pluton growth on magma crystallinity, aureole rheology, chamber stability and metamorphic fluid flow : numerical modeling of the growth of papoose flat pluton, White-Inyo Range, California /
(University of Missouri--Columbia, 2017)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Magma is a molten rock that rises in the Earth's crust because it is hotter and less dense than the surrounding rocks. If the magma finds a way to the ...
Paleoproterozoic metamorphic, structural, and tectonic evolution of the Hartville Uplift, Southeastern Wyoming
(University of Missouri--Columbia, 2016)
The Hartville Uplift (HU) of southeastern Wyoming lies near the intersection of two major Paleoproterozoic crustal boundaries, the Cheyenne Belt (CB) and the Dakotan Orogen. Previous structural and geochronologic studies ...