The Aspen Park 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.
Aspen Park’s center stands about 8,110 ft above sea level. Within three miles the land runs from 7,660 ft to 8,990 ft, a difference of 1,330 ft: steep hill country. The highest named summit within 15 miles is Rosedale Peak, about 11,770 ft, 13 miles west.
Under the town center the state geologic map shows Biotitic gneiss, schist, and migmatite (biotite-gneiss, schist, migmatite), from the Paleoproterozoic, 1.6 to 2.5 billion years old.
The section below crosses 12 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.
Granite, alkali-feldspar-granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 8 mi of the line.
Biotite-gneiss, schist, migmatite. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 7 mi of the line.
Alkali-feldspar-granite, granite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 4 mi of the line.
Arkose, conglomerate. Age: Carboniferous to Permian, 252 to 324 million years old. About 1 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 1 mi of the line.
Gneiss. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 0.6 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 6 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 Aspen Park reaches the Gulf of America by way of South Turkey Creek, Turkey Creek, Bear Creek, the South Platte, the Platte, the Missouri and the Mississippi: about 2,430 river miles.
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 Aspen Park; river miles along the main stem, rounded.