The La Madera 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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La Madera’s center stands about 6,530 ft above sea level. Within three miles the land runs from 6,420 ft to 7,420 ft, a difference of 1,000 ft: steep hill country. The highest named summit within 15 miles is Kiowa Mountain, about 9,720 ft, 15 miles north-northwest.
Under the town center the state geologic map shows Los Pinos Formation of Lower Santa Fe Group (coarse-detrital, conglomerate), from the Late Oligocene to Miocene, 5.3 to 28 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 8×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate-sandstone, coarse-detrital, fine-detrital. Age: Late Oligocene to Late Miocene, 5.3 to 28 million years old. About 6 mi of the line.
Coarse-detrital, conglomerate. Age: Late Oligocene to Miocene, 5.3 to 28 million years old. About 6 mi of the line.
Quartzite. Age: Paleoproterozoic, 1.7 to 1.7 billion years old. About 5 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 0.8 million years old. About 3 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.
A raindrop that lands in La Madera reaches the Gulf of America by way of the Arroyo el Rito, the Cañada Ancha, the Rio Chama and the Rio Grande: about 1,670 river miles.
Lakes on the way: Paz Ramirez Lake, Amistad Reservoir, Elephant Butte Reservoir and Caballo Reservoir.
760 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of La Madera; river miles along the main stem, rounded.
