Geologic Unit: Biscara

Usage:

No current usage?
(†Biscara Member of Los Pinos Formation (NM) considered abandoned? Uncertain if used by the NM Geol. Survey. Possibly abandoned and replaced with Cordito and Esquibel members of Los Pinos Formation, El Rito Formation, and Conejos(?) Formation. See Cordito, Esquibel, El Rito, and Conejos.)

Geologic age:

Tertiary (Oligocene to Miocene)

Type section, locality, area and/or origin of name:

Named from exposures in Biscara Canyon about 1 to 5 mi from its mouth, Rio Arriba Co., [Carson National Forest area], central northern NM (Butler). These strata of the type locality, however, are here included in Biscara-Esquibel member (new). Mapped in lower Tusas Valley east of Tusas Canyon, from 1.3 mi north of Petaca to a point about 3.5 mi north-northwest of Las Tablas, Las Tablas quadrangle, Rio Arriba Co., [Carson National Forest area], central northern NM (Barker, 1958).

AAPG geologic province:

San Juan basin