The New Cordell 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.
New Cordell’s center stands about 1,550 ft above sea level. Within three miles the land runs from 1,470 ft to 1,690 ft, a difference of 220 ft: rolling country.
Under the town center the state geologic map shows Cloud Chief Formation (shale, siltstone, sandstone), from the Permian, 252 to 299 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 35×. 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, siltstone, sandstone. Age: Permian, 252 to 299 million years old. About 13 mi of the line.
Shale, siltstone. Age: Permian, 252 to 299 million years old. About 6 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 0.6 mi of the line.
Sandstone. Age: Permian, 252 to 299 million years old. About 0.5 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 New Cordell reaches the Gulf of America by way of Cavalry Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 1,220 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 New Cordell; river miles along the main stem, rounded.