The Thomaston 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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Thomaston’s center stands about 730 ft above sea level. Within three miles the land runs from 590 ft to 800 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Betts Mountain, about 1,290 ft, 15 miles west.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 23×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss, mica-schist, amphibolite. Age: Precambrian to Paleozoic. About 6 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. About 6 mi of the line.
Biotite-gneiss. Age: Precambrian to Paleozoic. About 5 mi of the line.
Age: Precambrian to Paleozoic. About 3 mi of the line.
Mica-schist. Age: Precambrian to Paleozoic. About 2 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. 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. 3 smaller units 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 Thomaston reaches the Gulf of America by way of Town Branch, Bell Creek, Potato Creek, the Flint and the Apalachicola: about 360 river miles.
240 miles of the trip are on the Flint.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Thomaston; river miles along the main stem, rounded.
