SDSU Geological Sciences - Thesis Defense - Leah Carrigan

submitted by: tcarrasc
Paleodepth reconstruction through the Pennsylvanian Finis Shale of Texas: Insights from brachiopod oxygen isotopes Leah Carrigan ABSTRACT The Upper Pennsylvanian Finis Shale occurs within the Graham Formation of the Cisco Group and represents a mud-dominated environment along the eastern shelves of the sub-equatorial Midland Basin (Pierce et al., 2010). In a representative section of the Finis Shale, Forcino et al. (2010) documented a fundamental decrease in the abundance and biomass...

SDSU Geological Sciences - Thesis Defense - Rachel Errthum

submitted by: tcarrasc

The Geochemical Characteristics of the lower Miocene Volcanic and Epiclastic Unit, Picacho State Recreation Area, SE California

Rachel Errthum

SDSU Geological Sciences - Thesis Defense - Kaitlin Wessel

submitted by: tcarrasc
The West Bullion-Mesquite Lake Fault Step-Over: Assessment and Comparison With Faults of the Eastern California Shear Zone, Twenty-Nine Palms Marine Corps Base, California Kaitlin Wessel ABSTRACT Twenty-nine Palms Marine Corps Base is positioned in a step-over region between the West Bullion Fault and Mesquite Lake Fault. Both of these belong to a series of transform faults located in the Mojave Desert called the Eastern California Shear Zone (ECSZ) that trends northwest to southeast....

SDSU Geological Sciences - Thesis Defense - Luke Ranieri

submitted by: tcarrasc
Enigmatic new Osagean unit sitting atop Lower Mississippian Joana Limestone at Granite Mountain Island, Middle Range, West-Central Utah Luke A. Ranieri ABSTRACT The enigmatic Middle Range (MR) unit that unconformably overlies the Joana Limestone in the Middle Range, Utah, was deposited on the eroded surface of the Joana bank of the Antler forebulge in the Lower Mississippian in warm, tropical sea water, and fits the classification of a Waulsortian or Waulsortian-like mudmound due to...

SDSU Geological Sciences - Thesis Defense - Marck Maroun

submitted by: tcarrasc
Saprock: A long term recorder of ground shaking, Peninsular Ranges, southern California Marck Maroun ABSTRACT Saprolization is commonly viewed as an isovolumetric process. However, it has not been studied extensively in seismogenic areas. Hence, we undertook a detailed study of five sites located at disparate distances to the seismically active Elsinore fault. Data obtained during this study along with the results of earlier investigation of five additional sites, support the idea of...

Search for Rare Earths, Key Materials for Energy Innovation

submitted by: RASEIBoulder
Rare earth minerals are difficult and expensive to mine. And like most mining activities, doing so results in environmental damage, particularly because the ores from which these metals are extracted can be radioactive. Chinese mines have produced rare earths at a much lower cost, forcing competitors to shut down in recent years and creating a near monopoly. Japan is developing technology to improve recycling of some rare earths from discarded electronic products. And it is seeking...