The Lindsay 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.
Lindsay’s center stands about 980 ft above sea level. Within three miles the land runs from 960 ft to 1,100 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Table Hill, about 1,300 ft, 13 miles south-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 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 55×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 9 mi of the line.
Sandstone, conglomerate. Age: Permian, 252 to 299 million years old. About 6 mi of the line.
Sandstone. Age: Permian, 252 to 299 million years old. About 4 mi of the line.
Conglomerate, shale, siltstone. Age: Permian, 252 to 299 million years old. About 2 mi of the line.
Shale, sandstone, siltstone. Age: Permian, 252 to 299 million years old. About 2 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 0.9 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 Lindsay reaches the Gulf of America by way of Hybarger Creek, Bear Creek, the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 1,000 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 Lindsay; river miles along the main stem, rounded.