The Steelville 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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Steelville’s center stands about 770 ft above sea level. Within three miles the land runs from 700 ft to 1,020 ft, a difference of 320 ft: rolling country. The highest named summit within 15 miles is Camels Hump, about 1,370 ft, 14 miles south-southeast.
Under the town center the state geologic map shows Gasconade Dolomite (dolostone), from the Early Ordovician, 471 to 487 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 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, chert. Age: Early Ordovician, 471 to 487 million years old. About 9 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 9 mi of the line.
Shale, limestone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Dolostone. Age: Cambrian, 487 to 497 million years old. About 1 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million 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 Steelville reaches the Gulf of America by way of Yadkin Creek, Whittenburg Creek, the Meramec and the Mississippi: about 1,290 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Steelville; river miles along the main stem, rounded.
