Kinnick Formation
Kinnick Formation
early Miocene
Fluvial and pyroclastic deposits cropping out in the Tehachapi Mountains, in southern map area. This unit represents a (partial) distal equivalent to the Cache Peak volcanics (map unit cpv), from which the volcanic component is derived. Sedimentary strata are commonly tuffaceous and consist of arkosic to volcanic lithic sandstone, pebble to cobble conglomerate, siltstone, mudstone, and minor local (basal?) sedimentary breccia (e.g., Dibblee, 1967; Quinn, 1987). Pyroclastic strata are comprised of lenticular beds of quartz-bearing tuff and tuff breccia (Dibblee, 1967). Conformably overlain by middle Miocene Bopesta Formation (map unit bop). Early Miocene age based on stratigraphic relations to the Cache Peak Volcanics and Bopesta Formation. Boundary between Cache Peak Volcanics and Kinnick Formation is gradational, not discrete.