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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.
Year defined. 1909. Coordinates. 34°12′06″N 106°46′32″W / . 34.2017512°N 106.7754422°W. / 34.2017512; -106.7754422. Yeso Group (New Mexico) The Yeso Group is a group of geologic formations in New Mexico. It contains fossils characteristic of the Kungurian Age of the early Permian Period. [ 1][ 2]
Geography of New Mexico. With a total area of 121,590 square miles (314,900 km 2), [1] New Mexico is the fifth-largest state, after Alaska, Texas, California, and Montana. Its eastern border lies along 103°W longitude with the state of Oklahoma, and 2.2 miles (3.5 kilometres) west of 103°W longitude with Texas (due to a 19th-century surveying ...
F. List of fossiliferous stratigraphic units in New Mexico. Categories: Stratigraphy of the United States by state. Geology of New Mexico.
Spears Group. / 34.281; -107.296. The Spears Group is a group of geologic formations exposed in and around the northeast Mogollon-Datil volcanic field of southwestern New Mexico. [ 2][ 3] It has a radiometric age of 33 to 39 million years, corresponding to the Eocene to Oligocene epochs .
The San Juan Basin is an asymmetric structural depression in the Colorado Plateau province, with varying elevation and nearly 3,000 feet (910 m) in topographic relief. Its most striking features include Chaco Canyon (northwestern New Mexico, between Farmington and Santa Fe) and Chacra Mesa. The basin lies west of the Continental Divide, and its ...
The geology of New Mexico. A geologic history: New Mexico Geological Society Special Volume 11. pp. 95–136. ISBN 978-1-58546-010-6. Mazzullo, S. J. (1995). "Permian Stratigraphy and Facies, Permian Basin (Texas—New Mexico) and Adjoining Areas in the Midcontinent United States". The Permian of Northern Pangea: 41–60.
Charts the Dakota unit and adjacent units with the new understanding of the discontinuities from the Kansas west border through the type location to Minnesota. Stephen C. Hook, William A. Cobban (2009). "The type section of the Upper Cretaceous Tokay Tongue of the Mancos Shale (new name), Carthage coal field, Socorro County, New Mexico" (PDF).