The McIntosh 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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McIntosh’s center stands about 6,150 ft above sea level. Within three miles the land runs from 6,120 ft to 6,260 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Baldy, about 6,720 ft, 9 miles northwest.
Under the town center the state geologic map shows Lacustrine and playa-lake deposits (unconsolidated), from the Holocene, less than 12,000 years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 17×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Unconsolidated. Age: Holocene, less than 12,000 years old. About 13 mi of the line.
Limestone, sandstone, shale. Age: Carboniferous, 299 to 324 million years old. About 5 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 2.6 million years old. About 5 mi of the line.
Limestone, dolostone. Age: Permian, 260 to 290 million years old. About 0.8 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 0.1 million years old. About 0.3 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
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.
