Nacimiento Formation
A geologic formation in New Mexico / From Wikipedia, the free encyclopedia
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The Nacimiento Formation is a sedimentary rock formation found in the San Juan Basin of western New Mexico (United States).[1] It has an age of 61 to 65.7 million years, corresponding to the early and middle Paleocene. The formation has yielded an abundance of fossils from shortly after the Cretaceous-Paleogene extinction event that provide clues to the recovery and diversification of mammals following the extinction event.
Quick Facts Type, Underlies ...
Nacimiento Formation | |
---|---|
Stratigraphic range: Paleocene ~65.7–61 Ma | |
Type | Formation |
Underlies | San Jose Formation |
Overlies | Ojo Alamo Formation |
Thickness | 254 m (833 ft) |
Lithology | |
Primary | Shale |
Other | Siltstone, sandstone |
Location | |
Coordinates | 36.0126977°N 106.9855481°W / 36.0126977; -106.9855481 |
Region | New Mexico |
Country | United States |
Type section | |
Named for | Nacimiento (now Cuba, New Mexico) |
Named by | J.H. Gardner |
Year defined | 1910 |
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