Repetto Formation

The Repetto Formation is a Pliocene epoch sedimentary unit in the greater Los Angeles Basin composed primarily of sandstone and conglomerate.

Repetto Formation
Stratigraphic range: Early Pliocene, 5.33–3.60 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geologic formation
Unit of	Los Angeles Basin
Underlies	Pico Formation
Overlies	Puente Formation
Location
Region	Los Angeles Basin Los Angeles County, California
Country	United States

Geology

The unit records deposition of a submarine fan environment at lower bathyal depths, and is recognized as a productive petroleum reservoir.^[1][2]

The formation underlies the Pico Formation, both of the Neogene period. It overlies the Miocene-aged Puente Formation.^[3]

Classification

The Repetto Formation is equivalent in age to the Fernando Formation; some researchers consider it (as well as the overlying Pico Formation) to be a junior synonym based on benthic foraminifera stages.^[4] Other researchers maintain that the Repetto and Pico Formations are distinct stratigraphic units, and that the use of the name "Fernando Formation" should be stopped due to several issues with stratigraphic correlation and access to the type section.^[2]

See also

• Geology of Los Angeles County, California
• List of fossiliferous stratigraphic units in California