The Greenville 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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Greenville’s center stands about 750 ft above sea level. Within three miles the land runs from 680 ft to 910 ft, a difference of 230 ft: rolling country. The highest named summit within 15 miles is Peak Hill, about 960 ft, 6 miles south-southeast.
Under the town center the state geologic map shows Antlers Sand or Antlers Sandstone, from the Early Cretaceous, 100 to 145 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 54×. 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. Age: Early Cretaceous, 100 to 145 million years old. About 16 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 1 mi of the line.
Shale, sandstone, limestone. Age: Carboniferous, 299 to 324 million years old. About 0.4 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 Greenville reaches the Gulf of America by way of Little Hickory Creek, Hickory Creek, the Red River, the Atchafalaya and the Lower Atchafalaya: about 870 river miles.
710 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Greenville; river miles along the main stem, rounded.
