The Garfield 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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Garfield’s center stands about 9,560 ft above sea level. Within three miles the land runs from 8,930 ft to 13,080 ft, a difference of 4,150 ft: mountain country. The highest named summit within 15 miles is Mount Antero, about 14,180 ft, 9 miles north-northeast.
The section below crosses 13 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granitic. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 8 mi of the line.
Siltstone, sandstone, conglomerate. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 5 mi of the line.
Gravel, unconsolidated. Age: Pleistocene, 0.2 to 1.6 million years old. About 2 mi of the line.
Granite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 2 mi of the line.
Unconsolidated. Age: Pleistocene, less than 0.5 million years old. About 2 mi of the line.
Limestone. Age: Ordovician to Carboniferous, 324 to 487 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. 7 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 Garfield reaches the Gulf of America by way of the South Arkansas, the Arkansas and the Mississippi: about 1,980 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
1,070 miles of the trip are on the Arkansas.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Garfield; river miles along the main stem, rounded.
