The Tuskahoma 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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Tuskahoma’s center stands about 610 ft above sea level. Within three miles the land runs from 550 ft to 1,690 ft, a difference of 1,140 ft: steep hill country. The highest named summit within 15 miles is Buffalo Mountain, about 2,140 ft, 11 miles northeast.
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 16×. 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 7 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Shale, sandstone. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 0.7 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 0.3 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 Tuskahoma reaches the Gulf of America by way of the Kiamichi, the Red River, the Atchafalaya and the Lower Atchafalaya: about 790 river miles.
Lake on the way: South Lake.
550 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Tuskahoma; river miles along the main stem, rounded.
