The Unionville 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.
Mostly sunny
Mostly cloudy; warmer
Showers likely; cooler
Mostly sunny
Showers likely
Chance of showers
Chance of showers
Unionville’s center stands about 5,140 ft above sea level. Within three miles the land runs from 4,420 ft to 7,520 ft, a difference of 3,100 ft: mountain country. The highest named summit within 15 miles is Star Peak, about 9,800 ft, 6 miles north-northwest.
Under the town center the state geologic map shows Older alluvium and alluvial fan deposits (coarse-detrital, fine-detrital), from the Pliocene to Pleistocene, less than 5.3 million years old.
The section below crosses 7 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.
Coarse-detrital, fine-detrital. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 11 mi of the line.
Limestone, dolostone, shale. Age: Early Triassic to Late Triassic, 227 to 251 million years old. About 8 mi of the line.
Andesite, rhyolite, clastic. Age: Early Triassic to Middle Triassic, 237 to 252 million years old. About 3 mi of the line.
Clastic. Age: Late Triassic to Middle Jurassic, 164 to 227 million years old. About 1 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.4 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene to Holocene, less than 2.6 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. 1 smaller unit 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.
