The Bruni 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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Mostly cloudy; cooler
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Mostly cloudy; warmer
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Bruni’s center stands about 780 ft above sea level. Within three miles the land runs from 710 ft to 860 ft, a difference of 150 ft: gently rolling country.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 54×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, sandstone. Age: Miocene, 5.3 to 23 million years old. About 20 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Clay. Age: Oligocene, 23 to 34 million years old. About 0.4 mi of the line.
Clay. Age: Late Eocene to Early Oligocene, 28 to 38 million years old. About 0.2 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.
