Pg. 14-17. Pyramid Shale Member of Carrara Formation. Name proposed for the 5th from lowermost member (of 9). Present in southeastern California and southern Nevada. Consists of green shale interbedded with brown and maroon siltstone and shale with minor quartzite and limestone. Is fissile, fossiliferous with slump folds. Thickness ranges from <1 to 172 m. Conformably underlies Red Pass Limestone Member (new) and overlies with sharp contact Gold Ace Limestone Member (new), both of Carrara Formation; is inseparable from Echo Shale Member (new) of Carrara Formation where Gold Ace is absent. Contains trilobite fauna of OLENELLUS MULTINODUS Zonule. Age is Early and Middle Cambrian. (Pyramid Shale Member of Carrara Formation adopted by the USGS.)
Type locality: exposures at west base of Pyramid Peak, Funeral Mountains, Inyo Co., southeasternl CA. Named from Pyramid Peak.

Source: GNU records (USGS DDS-6; Menlo GNULEX); US geologic names lexicon (USGS Bull. 1564, p. 136); Changes in stratigraphic nomenclature, 1979 (USGS Bull. 1502-A, p. A60).