Difficult Run (pre-trip)
This week, I'm taking some of my Honors students to Difficult Run, Virginia.
It's right across the Potomac River from my beloved Billy Goat Trail. Here's a map of the area:
Some discussion of the bedrock geology of Difficult Run can be found here, in an excellent field trip guide by Scott Southworth (USGS) and colleagues that's part of Excursions in Geology and History (Frank Pazzaglia, editor).
Here's a look at Difficult Run, looking upstream from below one of the several waterfalls there:
These outcrops were all relatively recently scoured (in 1972 by Hurricane Agnes), so there are some good exposures. We're going to look for a fault reported to be there, as well as the incision geomorphology of Difficult Run itself, and some nice exposures of granite pegmatites (keys for scale):
This field trip is less a guided tour, and more of an exploration, so I hope when we get back, I'll have some photos of new and interesting things to share.
It's right across the Potomac River from my beloved Billy Goat Trail. Here's a map of the area:
Some discussion of the bedrock geology of Difficult Run can be found here, in an excellent field trip guide by Scott Southworth (USGS) and colleagues that's part of Excursions in Geology and History (Frank Pazzaglia, editor).
Here's a look at Difficult Run, looking upstream from below one of the several waterfalls there:
These outcrops were all relatively recently scoured (in 1972 by Hurricane Agnes), so there are some good exposures. We're going to look for a fault reported to be there, as well as the incision geomorphology of Difficult Run itself, and some nice exposures of granite pegmatites (keys for scale):
This field trip is less a guided tour, and more of an exploration, so I hope when we get back, I'll have some photos of new and interesting things to share.
Labels: faults, granite, igneous, metamorphism, ordovician, piedmont, rivers, virginia
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