The Glasgow 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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Glasgow’s center stands about 760 ft above sea level. Within three miles the land runs from 700 ft to 2,310 ft, a difference of 1,610 ft: steep hill country. The highest named summit within 15 miles is Apple Orchard Mountain, about 4,220 ft, 8 miles south-southwest.
Under the town center the state geologic map shows Shady Dolomite (dolostone), from the Cambrian, 487 to 542 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 6×. 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 8 mi of the line.
Granulite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 6 mi of the line.
Quartzite, conglomerate, sandstone. Age: Cambrian, 487 to 542 million years old. About 4 mi of the line.
Dolostone, limestone. Age: Cambrian, 487 to 542 million years old. About 3 mi of the line.
Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Dolostone. Age: Cambrian, 487 to 542 million 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. 1 smaller unit 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 Glasgow reaches Chesapeake Bay and the Atlantic Ocean by way of the Maury and the James: about 280 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Glasgow; river miles along the main stem, rounded.
