Folds in schist Location: Great Falls of the Potomac National Park - Billygoat Trail, near Potomac, MD Year: 2003 Merckslides catalogue number: 06-17773 Comments:

Lamprophyre dikes on Virginia side of Mather Gorge Location: Great Falls of the Potomac National Park - Billygoat Trail, near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50242 Comments:

Mather Gorge Location: Great Falls of the Potomac National Park near Potomac, MD Year: 2006 Merckslides catalogue number: 06-23138 Comments: Shotgun straight, but why?

Winter vegitation (laurel?) and schist on Billy-goat Trail Location: Great Falls of the Potomac National Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50048 Comments:

Folded quartz veins in schist in ceiling of overhang on Billy-goat Trail Location: Great Falls of the Potomac National Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-52896 Comments:

Quartzite at base of the big climb - Billy-goat Trail Location: Great Falls of the Potomac National Park near Potomac, MD Year: 2008 Merckdigitals catalogue number: 06-50055 Comments:

Mather Gorge with swimmers Location: Great Falls of the Potomac National Park near Potomac, MD Year: 2006 Merckslides catalogue number: 06-23139 Comments:

Granite dike cross-cutting amphibolite Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2001 Merckslides catalogue number: 06-14351 Comments:

Shear zone in gneiss Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2006 Merckslides catalogue number: 06-23137 Comments:

Outcrop of gneiss Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2006 Merckslides catalogue number: 06-23136 Comments:

Kyanite pseudomorphs in gneiss Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2005 Merckslides catalogue number: 06-21456 Comments: This is always our last stop on the Geology 100 field trip.

Eroded kyanite pseudomorphs in gneiss Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2008 Merckdigitals catalogue number: 06-50251 Comments: This is always our last stop on the Geology 100 field trip.

Detail of eroded kyanite pseudomorphs (above) Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2008 Merckdigitals catalogue number: 06-50251 Comments: This is always our last stop on the Geology 100 field trip.

Amphibolite Location: Great Falls of the Potomac National Park - Billygoat Trail near "the beach", MD Year: 2005 Merckslides catalogue number: 06-21455 Comments:

Return to list