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6 May 2022
Book report
Underfoot: A Geologic Guide to the Appalachian Trail, by V. Collins Chew Published in 1988 by the Appalachian Trail Conference, this volume is a very AT-focused look at east coast geology. It’s also out of date, and a little hand-wringing when it comes to making clear conclusive statements about the arc of geologic history. The summary of geologic events is written for the beginner, not the professional. There’s lots of …
19 October 2015
The Martian, by Andy Weir
There’s a lot of talk about this book lately, since they just made it into what I’m told is a very good movie. I heard the scuttlebutt and watched the preview for the film, and when the protagonist/narrator said “I’m going to have to science the shit out of this,” I knew this was probably a story for me. I was lucky to score a copy of the audiobook from …
19 November 2010
Is this an angular unconformity on Mars?
Jason Buchheim, one of the people I met last week in Pittsburgh, just posted a Gigapan of images stitched together from the Mars Observer MER HiRise. Part of it jumped out at me as being similar to the map pattern we see on Earth where an angular unconformity outcrops: Here, I’ve highlighted the pattern which caught my eye: On the other hand, the increasing inflection of the “lower” (in the …
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.