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...

SDSU Geological Sciences Webinar - Mario V Caputo

submitted by: tcarrasc
Quaternary limestones of San Salvador Island, Bahamas, and Jurassic sandstones and Holocene sand, United States – a first approach in comparative eolian architecture Mario V. Caputo Secretary/Managing Editor Pacific Section SEPM (Society for Sedimentary Geology) ABSTRACT Quaternary calcarenites, forming cliffs along the northeastern and southern margins of San Salvador Island, Bahamas, display a host of eolian features that have counterparts in Jurassic quartzarenites of the...

To What Degree? What Science is Telling Us About Climate Change

submitted by: nsf

How do we know the climate is changing? How do we know what's causing it? Some of the world's leading climate scientists explore the science behind the headlines in this lively documentary.

SDSU Geological Sciences Webinar - Yehuda Ben-Zion

submitted by: tcarrasc
Rock damage, Earthquakes and Faults in the Brittle Crust Yehuda Ben-Zion Department of Earth Sciences University of Southern California, Los Angeles We review observational and theoretical results on seismic radiation and brittle rock damage in two complementary problems. (i) Rapid damage generation by sources with sufficiently high amplitude and subsequent gradual healing. (ii) Effects of brittle rock damage within the source volume on the seismic radiation to the bulk. (i) Analysis...