The Gabbs 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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Gabbs’s center stands about 4,720 ft above sea level. Within three miles the land runs from 4,520 ft to 6,630 ft, a difference of 2,110 ft: mountain country. The highest named summit within 15 miles is Sherman Peak, about 8,620 ft, 9 miles east-northeast.
Under the town center the state geologic map shows Alluvium, undifferentiated (coarse-detrital, fine-detrital), from the Pleistocene to Holocene, less than 2.6 million years old.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Coarse-detrital, fine-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 8 mi of the line.
Carbonate, arenite, clastic. Age: Middle Triassic to Middle Jurassic, 164 to 247 million years old. About 6 mi of the line.
Sedimentary, volcanic. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 3 mi of the line.
Granodiorite, granite. Age: Cretaceous, 66 to 145 million years old. About 3 mi of the line.
Andesite, basalt. Age: Oligocene to Miocene, 5.3 to 34 million years old. About 2 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. 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. 2 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 Gabbs reaches the Great Basin by way of Finger Rock Wash: about 25 river miles. The Great Basin has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Often dry. About 100% of the way is mapped as streams that run only after rain or snowmelt; the water makes the whole trip in floods.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Gabbs; river miles along the main stem, rounded.
