Rare olivine-pyroxene cumulates and hornblende gabbros of the ca. 150 Ma Summit gabbro are scrutinized with the goal of revealing initial differentiation trajectories and source characteristics of mafic magmas within the Late Jurassic Sierra Nevada ar . . .

Crystal Lake is a small (0.02 km2), alpine lake in the San Gabriel Mountains. This hydrologically closed lake is one of the very few permanent, freshwater lakes in the range. as a result, it is ideal for recording coastal southwestern US hydrologic va . . .

Ancient authigenic dolomites (e.g., concretions) have been studied extensively in order to determine formation conditions and characterize shallow diagenetic environments. the formation of these dolomites is commonly attributed to the anaerobic microb . . .

The majority of lacustrine studies from the Mojave Desert Region focus on Mojave River fed lakes, specifically Silver and Soda Lake. the Mojave River headwaters, located in the San Bernardino Mountains, feed the Mojave River lakes and thus contain an . . .

Paleozoic shallow marine communities differ considerably from Modern shallow marine communities. for example, Modern animals such as gastropods and bivalves occupy niches once occupied by Paleozoic brachiopods and echinoderms. Researchers suggest the . . .

Detrital zircon U-Pb geochronology provides a statistical basis for identifying provenance and correlating deformed volcanosedimentary rocks. Uranium-lead (U-Pb) detrital zircon ages from the Schoonover Sequence of the Golconda allochthon (GA) are com . . .

This study utilized the stratigraphic record from the Seal Beach Wetlands (SBW), a coastal wetland in southern California straddling the active Newport-Inglewood Fault Zone, to: 1) Identify evidence of paleoseismic events and 2) Characterize wetland r . . .

Measuring geomorphic indices is tedious and laborious, whereas Arc-GIS is inflexible, requires a license and substantial time to learn. This project demonstrates that geomorphic indices may be measured rapidly and accurately using Google Earth. First, . . .

Gulf Coast salt domes occur in association with significant reserves of carbonate minerals, crude oil, natural gas, and elemental sulfur. As with other diagenetic carbonate minerals, cap rock calcites may form from microbial degradation of organic com . . .

Aliso Canyon gas storage facility is located in the Santa Susana Mountains, California. The facility is depleted oil field, re-purposed for gas storage in 1973. Porter Ranch is a residential community, adjacently located to the south of the facility. . . .