The Centerville 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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Centerville’s center stands about 750 ft above sea level. Within three miles the land runs from 730 ft to 1,200 ft, a difference of 470 ft: hilly country. The highest named summit within 15 miles is Wildcat Mountain, about 1,780 ft, 14 miles northeast.
Under the town center the state geologic map shows Eminence Dolomite, Potosi Dolomite (dolostone), from the Cambrian, 487 to 497 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 20×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone. Age: Cambrian, 487 to 497 million years old. About 12 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 8 mi of the line.
Rhyolite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Dolostone, shale, siltstone. Age: Cambrian, 487 to 497 million years old. About 1 mi of the line.
Alkali-feldspar-granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 0.6 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
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 Centerville reaches the Gulf of America by way of the West Fork Black, the Black River, the White River and the Mississippi: about 1,170 river miles.
620 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Centerville; river miles along the main stem, rounded.
