Marquenas Formation
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The Marquenas Formation is a geological formation that crops out in the Picuris Mountains of northern New Mexico. Detrital zircon geochronology gives it a maximum age of 1435 million years, correspond
Marquenas Formation with crosscutting dike, Picuris Mountains
Coarse conglomerate at the base of the Marquenas Formation
Middle quartzite section of Marquenas Formation
Sample of quartzite from the middle section of the Marquenas Formation
Big Rock Formation
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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
Marquenas Formation
…shows that the layering is overturned, and this supported the interpretation of the formation as part of the Vadito Group, likely correlating with the Big Rock Formation of the Tusas Mountains. However, detrital zircon geochronology establishes a maximum age of 1435 Mya, much younger than the Vadito Group. The provenance…
Exposure of Big Rock Formation at Mesa la Jara, New Mexico