English: This image shows an outcrop of the Flechado Formation at its type section in the Rio Pueblo Valley, New Mexico, USA. The Flechado Formation is a lower to middle Pennsylvanian formation. It is so completely indurated at its type section that it can be difficult to distinguish from nearby Precambrian quartzites.
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Captions
Close view of Flechado Formation at its type section, Rio Pueblo Valley, New Mexico, USA