Wednesday, December 16, 2009
Some geologic faults that appear strong and stable, slip and slide like weak faults. Now an international team of researchers has laboratory evidence showing why some faults that "should not" slip are weaker than previously thought. "Low-angle normal faults -- faults that dip less than 45 degrees -- are a problem," said Chris Marone, professor of geosciences, Penn State. "Standard analysis shows that these faults should not slip because it is easier to form a new fault than to slip on this orientation." (more)
Friday, January 30, 2009
The music may come out of the 1960s, but an open courseware class available at Penn State that includes a guitar playing and singing professor is definitely designed for the Millennial Generation. Highlighted with video clips, animations and song parodies, Professor Richard Alley's online course "Geology of the National Parks" (GEOSC 10) not only instructs, it also entertains and fulfills general education requirements for undergraduates not majoring in geoscience. (more)
Tuesday, July 29, 2008
Everywhere teachers and learners have access to the Internet, they now also have access to a rich collection of educational resources created for the popular Penn State course "Geology of the National Parks." Professor Richard Alley, principal author of the course, observed that "some of the world's best geological features are enshrined in the U.S. National Parks. Geology of the National Parks is a tour of important geological ideas as well as a virtual tour of some of the beautiful places in which these ideas are revealed." (more)
Monday, July 21, 2008
The May 12 Sichuan earthquake in China was unexpectedly large. Analysis of the area, however, now shows that topographic characteristics of the highly mountainous area identified the mountain range as active and could have pointed to the earthquake hazard. Topographic analysis can help evaluate other, similar fault areas for seismic risk, according to geologists from Penn State and Arizona State University. (more)