SDSU Geological Sciences - Seminar - Robert Gaines

submitted by: tcarrasc
Paleoenvironments, Paleoecology, and Exceptional Preservation in Burgess Shale-type Deposits - Robert Gaines; Department of Geology, Pomona College: Cambrian Burgess Shale-type (BST) deposits occur worldwide and offer a remarkable window on the initial Phanerozoic radiation of the Metazoa. However, BST deposits also represent significant deviations from the constraints that govern the typical operation of the fossil record. These deviations remain to be adequately accounted for,...

SDSU Geological Sciences - Seminar - Kim Bak Olsen

linked profile(s): KimOlsen
submitted by: tcarrasc

LA's Future Earthquake;
Kim Bak Olsen -
Department of Geological Sciences,
San Diego State University

How to Use Portable Steam Collector

submitted by: drscottkelley

This video shows a demonstration of how to use a custom made steam collector designed to condense steam from geothermal vents (aka., fumaroles). This device was used used to collect samples of halophilic Archaea from fumaroles around the world, work which was published in:

Ellis, D., R.W. Bizzoco, and S.T. Kelley. (2008) Halophilic Archaea identified in fumarole steam vapor from vents around the world. Environmental Microbiology, 10: 1582-1590.

SDSU Geological Sciences - Seminar - Eleanora (Norrie) Robbins

submitted by: tcarrasc
Utilization of Geological Techniques to Help Solve an Archaeological Puzzle: When Did People Arrive in North America? Eleanora (Norrie) Robbins Department of Geological Sciences San Diego State University Knut Fladmark hypothesized that as soon as boat technology was developed 40,000 years ago, people probably traveled the oceans. The 40,000-year-ago shoreline is now below 150-160 ft (50 m) of water and an unknown thickness of sediment. So evidence for boat transport by maritime...

Emperors of the Extreme

submitted by: ucsandiego

Emperor penguins can flourish in locales where few other animals roam. But scientists now wonder if they can adapt to a new threat: climate change.

SDSU Geological Sciences - Seminar - Shuo Ma

submitted by: tcarrasc
A Physical Model for Widespread Near-Surface and Fault Zone Damage Induced by Earthquakes - Seismic observations indicate that material velocities at shallow depths decrease over a large area after large earthquakes. The reductions are widespread, and occur at distances of up to several source dimensions. A persistent low-velocity fault zone has also been documented extensively from seismic and geodetic observations, in which the velocity drops further after large earthquakes. Dynamic...