Pg. 46 (footnote), 50-51. Name Acebedo formation applied by Leo Herrera (unpub. thesis, 1951) to siltstones underlying Avenal sandstone in Tent Hills area. Consists, at least locally, of a basal conglomerate containing a coarse orbitoidal sandstone and a siltstone sequence. Rests unconformably on Cretaceous. May represent a coarser clastic phase of Lodo formation deposition, about equivalent, at least in upper part, in age and stratigraphic position to Arroyo Hondo member of Lodo farther north at Cantua Creek. Age is middle Eocene. Falls within Ulatisian stage. Footnote, page 46, refers to unit as member of Lodo formation.
Well exposed in Tent Hills region, south of Reef Ridge area, about 18 mi southwest of Avenal, Kern Co., southern CA.

Source: US geologic names lexicon (USGS Bull. 1200, p. 15).