The Las Quintas Fronterizas 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.
Partly cloudy
Partly cloudy
Mostly cloudy; cooler
Mostly cloudy
Mostly cloudy
Mostly cloudy
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Las Quintas Fronterizas’s center stands about 750 ft above sea level. Within three miles the land runs from 680 ft to 890 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Chapotal Hill, about 920 ft, 9 miles northeast.
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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Black-shale. Age: Late Cretaceous, 66 to 72 million years old. About 11 mi of the line.
Gravel. Age: Late Pliocene to Pleistocene, less than 3.6 million years old. About 3 mi of the line.
Sandstone, claystone. Age: Late Cretaceous, 66 to 72 million years old. About 0.8 mi of the line.
Sand. 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.
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 Las Quintas Fronterizas reaches the Gulf of America by way of the Rio Grande: about 490 river miles.
Lake on the way: Paz Ramirez Lake.
270 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Las Quintas Fronterizas; river miles along the main stem, rounded.
