The Slater 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.
Slater’s center stands about 4,990 ft above sea level. Within three miles the land runs from 4,920 ft to 5,320 ft, a difference of 400 ft: hilly country. The highest named summit within 15 miles is Maxwell Hill, about 6,650 ft, 12 miles west-southwest.
Under the town center the state geologic map shows Alluvium and Colluvium (clay, silt, sand), 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 9×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate, conglomerate-sandstone. Age: Oligocene, 23 to 34 million years old. About 5 mi of the line.
Claystone, conglomerate. Age: Late Eocene to Early Oligocene, 31 to 35 million years old. About 5 mi of the line.
Sand, unconsolidated. Age: Pleistocene to Holocene, less than 2.6 million years old. About 4 mi of the line.
Clay, silt, sand. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Claystone, sandstone, conglomerate. Age: Oligocene, 23 to 34 million years old. About 3 mi of the line.
Claystone, sandstone. Age: Oligocene, 23 to 34 million years old. About 3 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 Slater reaches the Gulf of America by way of Chugwater Creek, the Laramie, the North Platte, the Platte, the Missouri and the Mississippi: about 2,380 river miles.
Lake on the way: Grayrocks Reservoir.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Slater; river miles along the main stem, rounded.