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2 December 2010
How to make a Grand Canyon in seven easy steps
This series of cartoon images ended up on the board yesterday in Historical Geology lab… E = erosion D = deposition Yes, oversimplified: I didn’t include the newest thinking about the subtleties involved in putting together the Brahma and Vishnu Schists and Zoroaster Granite, and I didn’t include mention of faulting (either ancient or more recent). And no mention of magmatism – either of the Cardenas generation, or the more …
1 December 2010
Suspicious email
Geobloggers, Anyone else ever get notes like this in their email? Hello, I was reading http://mountainbeltway.wordpress.com/2010/08/23/rocks-of-glacier-national-park/ and had a comment from the piece. The image of the Belt rocks of the Altyn and Appekunny formations was really helpful in understanding how the cliffs are formed. This piece had a lot of really interesting and indepth information of Glacier National Park. Also, I’m interested in purchasing a text link on this …
The Konnarock Formation
A detailed description of one of the Virginia Blue Ridge’s most intriguing geologic formations: a maroon sedimentary sequence showing the advance of “Snowball Earth” glaciers in the Neoproterozoic.
Callan Bentley is Associate Professor of Geology at Piedmont Virginia Community College in Charlottesville, Virginia. He is a Fellow of the Geological Society of America. For his work on this blog, the National Association of Geoscience Teachers recognized him with the James Shea Award. He has also won the Outstanding Faculty Award from the State Council on Higher Education in Virginia, and the Biggs Award for Excellence in Geoscience Teaching from the Geoscience Education Division of the Geological Society of America. In previous years, Callan served as a contributing editor at EARTH magazine, President of the Geological Society of Washington and President the Geo2YC division of NAGT.