The Peebles 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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Peebles’s center stands about 830 ft above sea level. Within three miles the land runs from 630 ft to 970 ft, a difference of 340 ft: rolling country. The highest named summit within 15 miles is Brown Hill, about 1,350 ft, 14 miles north.
Under the town center the state geologic map shows Peebles Dolomite, Lilley and Bisher Formations, Undivided (dolostone), from the Silurian, 425 to 434 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 30×. 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: Silurian, 425 to 434 million years old. About 8 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Limestone, shale. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.
Shale. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.
Shale, siltstone, sandstone. Age: Devonian to Carboniferous, 324 to 422 million years old. About 3 mi of the line.
Shale, limestone, dolostone. Age: Late Ordovician, 445 to 454 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 Peebles reaches the Gulf of America by way of Ohio Brush Creek, the Ohio and the Mississippi: about 1,590 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Peebles; river miles along the main stem, rounded.
