P8. Peralta Tuff Member of Bearhead Rhyolite of Keres Group. Consists predominantly of bedded air-fall tuffs but includes probable hot-avalanche deposits, as well as reworked tuffs that are interbedded with and grade laterally into volcanic gravels of the Cochiti Formation. [Age is middle Pliocene.]
Named from typical exposures in Peralta Canyon near its junction with Colle Canyon [in area of Canada de Cochiti Grant-Santa Fe National Forest bdry., Santo Domingo Pueblo 15-min quadrangle, Sandoval Co., north-central NM].
Source: Publication.
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