Manzano Group
The Manzano Group is a group of geologic formations in central New Mexico. These have radiometric ages of 1601 to 1662 million years (Ma), corresponding to the late Statherian period of the Paleoproterozoic.
| Manzano Group | |
|---|---|
| Stratigraphic range: | |
Outcrops of Manzano Group (Sevilleta Metarhyolite) west of Abo Pass, New Mexico, US | |
| Type | Group |
| Sub-units | Blue Springs Formation Sais Quartzite Estadio Schist White Ridge Quartzite Abajo Formation Sevilleta Metarhyolite Bootleg Canyon Sequence Tijeras Greenstone |
| Thickness | 2,700 meters (8,900 ft) |
| Lithology | |
| Primary | Metarhyolite, quartzite |
| Other | Schist, amphibolite |
| Location | |
| Coordinates | 34.33°N 106.59°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Manzano Mountains |
| Named by | A. Luther |
| Year defined | 2006 |
Manzano Group (the United States) Manzano Group (New Mexico) | |
The name Manzano Group was previously applied to a group of sedimentary formations of Permian age in roughly the same geographical area. The original Manzano Group was historically important in the establishment of the paleontological time scale of the Permian period in western North America. However, the name was abandoned after 1920.
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