24 April 2020
Friday fold: The geologic map of Pennsylvania
Posted by Callan Bentley
This is such a gorgeous map:
Link 0.43 Gpx GigaPan of a geologic map by Berg, T.M., Edmunds, W.E., Geyer, A.R., Glover, A.D., Hoskins, D.M., MacLachlan, D.B., Root, S.I., Sevon, W.D., and Socolow, A.A., (1980)
I’ve been organizing a bunch of geologic maps this week for my Historical Geology students, and this is one of the most beautiful. I merged the two halves of the map that were available online and posted the result on GigaPan, which allows students to zoom in and out to various interesting parts of the map. To me, the contrast between the tightly-folded Valley & Ridge and the broader folds of the Allegheny Plateau is striking – and gorgeous!
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.
Beautiful job. You might try a SRTM90 elevation hillshade to add a little texture. Or leave it like it is.
Jack
Yes, they did this masterfully. The hillshade idea is one the Pennsylvania survey should definitely consider for their next iteration.