The Shawnee 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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Shawnee’s center stands about 1,060 ft above sea level. Within three miles the land runs from 970 ft to 1,100 ft, a difference of 130 ft: gently rolling country.
Under the town center the state geologic map shows Terrace Deposits (coarse-detrital, fine-detrital), from the Pleistocene, less than 2.6 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 8 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 5 mi of the line.
Shale, sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Shale, limestone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 1 mi of the line.
Shale, sandstone, limestone. Age: Carboniferous, 299 to 324 million years old. About 0.8 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 Shawnee reaches the Gulf of America by way of Deer Creek, the North Canadian, the Canadian, the Arkansas and the Mississippi: about 1,200 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Shawnee; river miles along the main stem, rounded.
