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Potomac River, Maryland (left)-Virginia (right)
Looking downstream at Mather Gorge on the Potomac River. Bedrock is Proterozoic-Cambrian Mather Gorge Formation. Great Falls Park, Virginia (220909-86)
Download Imagefolded quartz in schist, Virginia
folded quartz in schist of the Proterozoic-Cambrian Mather Gorge Formation, Great Falls Park, Virginia (220909-83)
Download ImageSchist of Mather Gorge Formation, Virginia (vertical)
Outcrop of Proterozoic-Cambrian schist of the Mather Gorge Formation and the Potomac River, Virginia. The other side of the river lies in Maryland. (220909-77)
Download ImageGreat Falls of the Potomac River. Virginia (L)- Maryland (R)
Great Falls of the Potomac River. Virginia (L)- Maryland (R) at Great Falls Park. Bedrock is metagraywacke and schist of the Proterozoic-Cambrian Mather Gorge Formation. (220909-74)
Download ImageSchist of Mather Gorge Formation, Virginia
Outcrop of Proterozoic-Cambrian schist of the Mather Gorge Formation and the Potomac River, Virginia (220909-69)
Download ImagePotomac River. Virginia (L)- Maryland (R) (Vertical)
Great Falls of the Potomac River. Virginia (L)- Maryland (R) at Great Falls Park. Bedrock is metagraywacke and schist of the Proterozoic-Cambrian Mather Gorge Formation. (220909-67)
Download ImageGreat Falls of the Potomac River. (vertical)
Great Falls of the Potomac River. Virginia (L)- Maryland (R) at Great Falls Park. Bedrock is mostly metagraywacke of the Proterozoic-Cambrian Mather Gorge Formation. (220909-62)
Download ImageGreat Falls of the Potomac River. Virginia (L)- Maryland (R)
Great Falls of the Potomac River. Virginia (L)- Maryland (R) at Great Falls Park. Bedrock is mostly metagraywacke and schist of the Proterozoic-Cambrian Mather Gorge Formation. (220909-57)
Download ImageOrdovician Perry Hall Gneiss, Baltimore, Maryland
Ordovician Perry Hall Gneiss, a felsic part of the Baltimore Mafic Complex, Maryland (220909-56)
Download ImageSalem River Estuary, New Jersey (Pan)
Panorama of the Salem River Estuary, New Jersey (220909-52)
Download ImageSalem River Estuary, New Jersey (Vertical)
Grasses along the Salem River Estuary, New Jersey (220909-48)
Download ImageSalem River Estuary, New Jersey (Vertical)
Grasses along the Salem River Estuary, New Jersey (220909-47)
Download ImageSalem River Estuary, New Jersey (Vertical)
Wetlands of the Salem River Estuary, New Jersey (220909-45)
Download ImageFolded pelitic schist, Delaware
Folded foliation in Proterozoic-Cambrian pelitic schist of the Wissahickon Formation, Delaware (220909-42)
Download ImageFolded pelitic schist, Delaware (vertical)
Folded foliation in Proterozoic-Cambrian pelitic schist of the Wissahickon Formation, Delaware (220909-35)
Download ImageBanded gneiss, Delaware
Near-vertical foliation in Pelitic gneiss of the Proterozoic-Cambrian Wissahickon Formation, Delaware. (220909-25)
Download ImageGroundwater seeping from cracks in gneiss, DE (vertical)
Groundwater seeping from cracks in Ordovician Brandywine Blue Gneiss of the Wilmington Complex, Delaware. Note the inclined foliation (220909-20)
Download ImageBrandywine Blue Gneiss, Delaware (vertical)
Ordovician Brandywine Blue Gneiss of the Wilmington Complex, Delaware (220909-15)
Download ImageBrandywine Blue Gneiss, Delaware (vertical)
Close-up of foliation in Ordovician Brandywine Blue Gneiss of the Wilmington Complex, Delaware (220909-6)
Download ImageBrandywine Blue Gneiss, Delaware (vertical)
Ordovician Brandywine Blue Gneiss of the Wilmington Complex, Delaware (220909-1)
Download Image
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