The Dickson 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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Dickson’s center stands about 820 ft above sea level. Within three miles the land runs from 700 ft to 980 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is White Mound, about 1,010 ft, 13 miles north.
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 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 47×. 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 11 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 8 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
Limestone, shale. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 2 mi of the line.
Limestone, shale, sandstone. Age: Middle Ordovician, 459 to 471 million years old. About 0.9 mi of the line.
Sandstone, conglomerate, shale. Age: Carboniferous, 299 to 324 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 Dickson reaches the Gulf of America by way of the Washita, the Red River, the Atchafalaya and the Lower Atchafalaya: about 880 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 Dickson; river miles along the main stem, rounded.
