DC Metro area residents, you're hereby invited to join me (NOVA) or Phil Justus (NRC) or Michelle Arsenault (NSF) on a geology hike along the Billy Goat Trail, a popular and rugged hiking trail upstream from DC on the Potomac River, downstream from Great Falls. Michelle and Phil and I take turns leading this excellent hike. You'll learn about the Iapetus Ocean, Appalachian mountain-building, and the incision history of the Potomac River. You'll see potholes, amphibolites, metagraywacke, migmatite, and the mysteriously-straight Mather Gorge. The Park Service has just posted the spring schedule online here. Reserve your space today!

Labels: appalachians, dc, geologists, piedmont