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Piedmont Limestone/Dolomite Lowlands

Ecoregion in Piedmont in VA, MD, PA

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The Piedmont Limestone/Dolomite Lowlands ecoregion is a very fertile and intensively farmed area underlain mostly by limestone and dolomite. These carbonates have been weathered to form a nearly level to undulating terrain that contains sinkholes, caverns, and disappearing streams. Ecoregion 64d is lithologically distinct from the metamorphic rock of the neighboring Piedmont Uplands (64c). Elevations are lower than adjacent ecoregions, typically 250-525 feet (76-160 m). In the York Valley, however, they rise to about 675 feet (206 m). There is little dissection and local relief is typically only 30-125 feet (9-38 m).

— EPA

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