9 February 2018
Friday fold: Taiwanese metasediments
Posted by Callan Bentley
Brian Yanites of Indiana University is the source for today’s Friday fold:
Zooming in on the outcrop:
Brian tells me that this is
~10 km west of the earthquake(s) in Taiwan this week. These are interbedded marble/schist and gneiss (was across river and location is really messed up geologically). Photos were taken along the Shakadang Trail in Taroko Gorge National Park. Beyssac, et al. (2007) found Zircon He ages from these rocks to be only about 1 Ma.
Here’s another:
Pretty gorgeous. I love the high-contrast coloring.
Brian reports that this second image shows:
schist/phyllite taken near the bridge at Tianxiang in Taroko National Park. That same Beyssac study as above found Zircon-He ages of only 0.5 Ma here.
Thanks for sharing, Brian! Happy Friday, all!
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.