The Danville 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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Danville’s center stands about 810 ft above sea level. Within three miles the land runs from 580 ft to 870 ft, a difference of 290 ft: rolling country.
Under the town center the state geologic map shows Cherokee Group - Cabaniss Subgroup, Krebs Subgroup (shale, sandstone, siltstone), from the Carboniferous, 299 to 324 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 48×. 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, shale. Age: Carboniferous, 299 to 324 million years old. About 8 mi of the line.
Dolostone, limestone. Age: Ordovician, 445 to 487 million years old. About 4 mi of the line.
Shale, sandstone, siltstone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 3 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Limestone, sandstone. Age: Early Devonian to Late Devonian, 359 to 422 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 Danville reaches the Gulf of America by way of Rumbo Branch, the Loutre, the Missouri and the Mississippi: about 1,300 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Danville; river miles along the main stem, rounded.
