The Greenville plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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Greenville’s center stands about 1,580 ft above sea level. Within three miles the land runs from 1,490 ft to 2,020 ft, a difference of 530 ft: hilly country. The highest named summit within 15 miles is Great North Mountain, about 4,460 ft, 14 miles northwest.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 9×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Cambrian to Ordovician, 445 to 542 million years old. About 7 mi of the line.
Dolostone, limestone. Age: Ordovician, 445 to 487 million years old. About 6 mi of the line.
Quartzite, conglomerate, sandstone. Age: Cambrian, 487 to 542 million years old. About 3 mi of the line.
Charnockite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Dolostone, limestone. Age: Cambrian, 487 to 542 million years old. About 2 mi of the line.
Charnockite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 smaller units along the line are not listed.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Greenville reaches Chesapeake Bay and the Atlantic Ocean by way of the South River, the South Fork Shenandoah, the Shenandoah and the Potomac: about 370 river miles.
180 miles of the trip are on the Potomac.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Greenville; river miles along the main stem, rounded.
