Geologic Map of the Abiquiu Quadrangle, Rio Arriba County, New Mexico
Scientific Investigations Map
2998
By: Florian Maldonado
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Abstract
The Abiquiu 1:24,000-scale quadrangle is located along the Colorado Plateau-Rio Grande rift margin in north-central New Mexico. The map area lies within the Abiquiu embayment, an early (pre-Miocene) extensional basin of the Rio Grande rift. Rocks exposed include continental Paleozoic and Mesozoic rocks of the Colorado Plateau and Cenozoic basin-fill deposits and volcanic rocks of the Rio Grande rift. Paleozoic units include the Late Pennsylvanian to Early Permian Cutler Group, undivided. Mesozoic units are Upper Triassic Chinle Group, undivided, middle Jurassic Entrada Sandstone, and Todilto Limestone Member of the Wanakah Formation. Mesozoic rocks are folded in some areas and overlain disconformably by Cenozoic rocks. Cenozoic sedimentary rocks are composed of the Eocene El Rito Formation, Oligocene Ritito Conglomerate, Oligocene-Miocene Abiquiu Formation, and Miocene Chama-El Rito and Ojo Caliente Sandstone Members of the Tesuque Formation of the Santa Fe Group. Volcanic rocks include the Lobato Basalt, the El Alto Basalt, and dacite of the Tschicoma Formation. Quaternary deposits consist of inset ancestral axial and tributary Rio Chama deposits and Holocene floodplain alluvium, fan and pediment alluvium, and landslide colluvium.
Suggested Citation
Maldonado, F., 2008, Geologic Map of the Abiquiu Quadrangle, Rio Arriba County, New Mexico (Version 1.0): U.S. Geological Survey Scientific Investigations Map 2998, Report: ii, 19 p.; Map Sheet: 49 x 33.5 inches; Downloads Directory, https://doi.org/10.3133/sim2998.
ISSN: 2329-132X (online)
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic Map of the Abiquiu Quadrangle, Rio Arriba County, New Mexico |
| Series title | Scientific Investigations Map |
| Series number | 2998 |
| DOI | 10.3133/sim2998 |
| Edition | Version 1.0 |
| Year Published | 2008 |
| Language | ENGLISH |
| Publisher | Geological Survey (U.S.) |
| Contributing office(s) | U.S. Geological Survey |
| Description | Report: ii, 19 p.; Map Sheet: 49 x 33.5 inches; Downloads Directory |
| Projection | Polyconic |
| Scale | 24000 |
| Additional Online Files (Y/N) | Y |