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The geology of New Mexico includes bedrock exposures of four physiographic provinces, with ages ranging from almost 1800 million years (Ma) to nearly the present day. Here the Great Plains, southern Rocky Mountains, Colorado Plateau, and Basin and Range Provinces meet, giving the state great geologic diversity.
Santa Fe, New Mexico. Named by. Hayden. Year defined. 1869. The Santa Fe Group is a group of geologic formations in New Mexico and Colorado. It contains fossils characteristic of the Oligocene through Pleistocene epochs. The group consists of basin -filling sedimentary and volcanic rocks of the Rio Grande rift, and contains important regional ...
The Menefee Formation consists of fluvial sandstone, shale, and coal. Based on ammonite biostratigraphy, the age of the Menefee Formation can be constrained to 84.2-79 million years (Ma), based on the presence of Baculites perplexus in the overlying Cliff House Sandstone, and ammonites from the late Santonian in the underlying Point Lookout ...
From the White Place, painting by Georgia O'Keefe depicting the Abiquiu Formation. The Abiquiu Formation is a geologic formation found in northern New Mexico. Radiometric dating constrains its age to between 18 million and 27 million years, corresponding to the late Oligocene to Miocene epochs. [1]
Access to the range is primarily via New Mexico State Road 152 (NM 152), which crosses the Black Range on its way from Kingston on the east towards San Lorenzo on the west. NM 152 crosses the range at 8,228-foot (2,508 m) Emory Pass, where there is a hiking trail that covers the entire length of the mountains along the central ridge.
McRae Group near its type location, Elephant Butte Reservoir, New Mexico, USA. The light bands are "bathtub rings" from stands of the reservoir. The McRae Group is a geological group exposed in southern New Mexico whose strata, including layers of the Hall Lake Formation and Jose Creek Formation, date to the Late Cretaceous. [1]
Albuquerque Basin. The Albuquerque Basin (or Middle Rio Grande Basin[1]) is a structural basin and ecoregion within the Rio Grande rift in central New Mexico. It contains the city of Albuquerque. Geologically, the Albuquerque Basin is a half-graben that slopes down towards the east to terminate on the Sandia and Manzano mountains. [2]
Hondo Group (New Mexico) Map of Hondo Group outcrops. The Hondo Group is a group of geologic formations that crops out in most of the Precambrian -cored uplifts of northern New Mexico. Detrital zircon geochronology gives a maximum age for the lower Hondo Group of 1765 to 1704 million years (Mya), corresponding to the Statherian period.