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30 March 2012
Friday fold: ice in Iceland
Searching for Peter Luffi’s latest Where On Google Earth? challenge, I found myself touring Iceland last week. While I didn’t find the strange comet-shaped feature he posted, I did find this: And zooming in a bit, to the high-contrast area in the center: This appears to be volcanic ash layers distorted by glacial flow and then melting/sublimation/weathering/erosion/ablation of the glacier. I posted something similar as the Friday fold almost a …
15 April 2011
Friday fold: A cold one
The Friday fold is glimpsed from Google Earth. Atop a valley glacier in south-central Alaska’s Kenai mountain range, a fold of “transverse moraine” displays parasitic folds.
14 April 2011
Where on (Google) Earth #280
My former student Jared Fortner (now at Radford University) won Wo(G)E #279 with his immediate recognition of the tsingy of Madagascar. Jared asked that I host the next edition here also: Click on the image for the full screenshot: make it bigger and give it some context. Where is this place? Why should anyone care? First person to (a) identify the location and (b) describe why it’s interesting gets the …
7 April 2011
Where on (Google) Earth #279
Well, in spite of it being a busy week, I allowed myself ten minutes yesterday morning to search for Where on (Google) Earth #278, and I found it in southeast Australia. So now it’s my turn to put a screenshot of some location from Google Earth online, and it’s your job to figure out where it is, and what the geologic significance of the location is. The Schott Rule is …
3 December 2010
Outcropedia edits
Outcropedia launched yesterday, and I think it has the potential to be a cool resource for geologists and amateur geology aficionados. I’m particularly excited about the strong structural flavor of the featured outcrops so far. (The site was initiated by three structural geologists.) However, there are some issues that will need to be resolved. Ron Schott pointed out one — misplacing outcrops. There’s also a functional issue of having to …
26 November 2010
Friday fold: the Scottish coast
Whilst searching the coastline of the U.K. for Where On Google Earth? #226, I found these lovely folds exposed in wave-cut platforms on the east coast of Scotland. I missed the actual location of the Google Earth screenshot (It was in Wales, and Anne Jefferson found it), but I’m happy enough to have found some sweet folds exposed in map view.
16 October 2010
Where on Google Earth? #215
With a helpful Twitter hint from Ron Schott, I won my second “Where on (Google) Earth?” challenge, the 214th edition of this popular geoblogospheric competition. As a result, I get to host the next one, Where on Google Earth? #215. The aim of the game is to figure out where on Earth this satellite imagery comes from, and then post the coordinates (lat/long, UTM, whatever) and give a brief explanation …
20 April 2010
Where on Google Earth? #199
For the first time ever, I have won a Where on Google Earth? that Ron Schott hosted, heavy on the clues. Now that it’s my turn to host, I’d like to spice things up a bit with a dynamic view. Using Google Earth’s historical imagery feature (the little “clock” button up top), I managed to see this suite of very different views of the exact same spot over time: Click …
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.