Sais Quartzite
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| Formation | |
|---|---|
| Stratigraphic range: | |
 Sais Quartzite at its type location near Abo Pass, New Mexico, US | |
| Type | Formation |
| Unit of | Manzano Group |
| Underlies | Blue Springs Formation |
| Overlies | Estadio Schist |
| Thickness | 600 feet (180 m) |
| Lithology | |
| Primary | Quartzite |
| Location | |
| Coordinates | 34°24′43″N 106°30′58″W / 34.412°N 106.516°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Sais railroad station |
| Named by | J.T. Stark and E.C. Dapples |
| Year defined | 1946 |
  Sais Quartzite (the United States)  Sais Quartzite (New Mexico) | |
The Sais Quartzite is a geologic formation exposed in the Los Pinos Mountains of central New Mexico.
The formation consists of up to 600 feet (180 m) of massive gray quartzite beds, 3 to 5 feet (0.91 to 1.52 m) thick, interbedded with thinner sericite-bearing quartzite beds. A few beds are greenish to white. The individual grain size in the beds is generally less than 1mm.[1] The formation is underlain by the Estadio Schist and unconformably overlain by the Blue Springs Formation.[2]
Detrital zircon geochronology a minimum age of 1670 million years (Ma), corresponding to the Statherian period of the Paleoproterozoic.[2]
