The Selman 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.
Showers likely
Showers likely
Partly cloudy; warmer
Partly cloudy
Mostly sunny
Partly cloudy
Chance of showers
Selman’s center stands about 1,730 ft above sea level. Within three miles the land runs from 1,660 ft to 1,830 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Dog Creek Shale, from the Permian, 252 to 299 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 40×. 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, siltstone. Age: Permian, 252 to 299 million years old. About 8 mi of the line.
Gypsum, dolostone, shale. Age: Permian, 252 to 299 million years old. About 5 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Sandstone. Age: Permian, 252 to 299 million years old. About 3 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 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. 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 Selman reaches the Gulf of America by way of Buffalo Creek, the Cimarron, the Arkansas and the Mississippi: about 1,400 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 Selman; river miles along the main stem, rounded.
