The Wynnewood 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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Wynnewood’s center stands about 900 ft above sea level. Within three miles the land runs from 820 ft to 980 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Robbers Roost, about 1,070 ft, 15 miles southeast.
Under the town center the state geologic map shows Woodford Shale (black-shale), from the Late Devonian, 359 to 384 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 48×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, sandstone, limestone. Age: Carboniferous, 299 to 324 million years old. About 11 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 9 mi of the line.
Shale, sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Limestone, conglomerate, dolostone. Age: Early Ordovician, 471 to 487 million years old. About 0.8 mi of the line.
Limestone, dolostone, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 0.1 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 Wynnewood reaches the Gulf of America by way of Turkey Sandy Creek, Kickapoo Sandy Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 930 river miles.
680 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Wynnewood; river miles along the main stem, rounded.
