Big Rock Formation
Videos
The Big Rock Formation is a formation that crops out in the Tusas Mountains of northern New Mexico. Detrital zircon geochronology gives a maximum age for the formation of 1665 Mya, corresponding to th
Exposure of Big Rock Formation at Mesa la Jara, New Mexico
Burned Mountain Formation
Videos
The Burned Mountain Formation is a geologic formation that crops out in the Tusas Mountains of northern New Mexico. It has a U–Pb radiometric age of 1700 Mya, corresponding to the Statherian period.
Big Rock Formation
…This assumes the clasts were not imbricated in the original deposit. The Big Rock Formation lies above the undivided lower Vadito Group and below the Burned Mountain Formation. It was long thought to correlate with the Marquenas Formation, but Marquenas Quartzite has been found via detrital zircon geochronology be much younger…
Burned Mountain Formation exposures near Placer Creek, New Mexico, United States
An outcrop of Burned Mountain Formation at Mesa la Jara, previously assigned to the Petaca Schist