English: This image shows an outcrop of the middle quartzite section of the Marquenas Formation. The Marquenas Formation was deposited in the Pilar Basin during the Mazatzal Orogeny, 1.45 billion years ago, and its age is confirmed by dendritic zircon geochronology. Exposed in theh Picuris Mountains, New Mexico, USA.
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Captions
Middle quartzite section of Marquenas Formation, Picuris Mountains, New Mexico, USA