Cabrillo Formation

Cabrillo Formation
Stratigraphic range: Maastrichtian stage,
Late Cretaceous Epoch
Cabrillo Formation; Stratigraphic range: Maastrichtian stage,; Late Cretaceous Epoch
Type	Geological formation
Unit of	Rosario Group
Overlies	Point Loma Formation
Lithology
Primary	sandstones, conglomerates
Location
Region	North America
Country	United States
Extent	Point Loma and Mount Soledad,; San Diego County; California
Type section
Named for	Cabrillo National Monument
Named by	Kennedy and Moore, 1971[1]

The Cabrillo Formation is a Maastrichtian stage geologic formation in coastal San Diego County, southern California. It is part of the Rosario Group.[2]

The Maastrichtian stage is of the Late Cretaceous Epoch, during the Mesozoic Era. It is found on the eastern and southwestern sides of the Point Loma peninsula including in Cabrillo National Monument, and on Mount Soledad, both within the city of San Diego.[2][3]

The Cabrillo Formation overlies the Point Loma Formation.

Fossils

A single tooth from the cartilaginous fish Squalicorax has been recovered from the Cabrillo Formation sediments of Cabrillo National Monument.[2][4]

Kennedy, M.P., and Moore, G.W., 1971, Stratigraphic relations of Upper Cretaceous and Eocene formations, San Diego coastal area, California: American Association of Petroleum Geologists Bulletin, v. 55, no. 5, p. 709-722. article
"Cabrillo National Park," Hunt, Santucci, and Kenworthy (2006); page 65.
"General Plan Final Program EIR: 3.11 Paleontological Resources" (PDF). City of San Diego.
Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69.