| Martinez Formation Stratigraphic range: Eocene | |
|---|---|
| Type | Geologic formation |
| Underlies | Tejon Formation (regionally), Ione Formation (regionally) |
| Overlies | Chico Formation |
| Location | |
| Region | California |
| Country |  United States |
The Martinez Formation is an Eocene Epoch geologic formation in California.
The formation regionally overlies the Chico Formation and regionally underlies the Tejon Formation or the Ione Formation.
It is exposed in the Clevelin Hills in Riverside County, Santa Ana Mountains in Orange County, northwestern Santa Monica Mountains near Calabasas (California) in Los Angeles County, and north of Mount Diablo/south of the Sacramento Delta in Contra Costa County. [1]
The formation preserves fossils dating back to the Paleogene period. [2]
The Chico Formation is a geologic formation of the Campanian Age during the Cretaceous Period, found in California and southern Oregon.
The Cowlitz Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Paleogene period
The Chatsworth Formation is a Cretaceous period sandstone geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.
The Coso Formation is a geologic formation in the Coso Range of the Mojave Desert, in Inyo County, California.
The Towsley Formation is a geologic formation in the Santa Susana Mountains, in Los Angeles County, California.
The Topanga Canyon Formation is a Miocene epoch geologic formation in the Santa Monica Mountains, Simi Hills, Santa Ana Mountains and San Joaquin Hills, in Los Angeles County, Ventura County, and Orange County, southern California. It is primarily composed of hard sandstone with some inter-bedded siltstone.
The Santa Clara Formation is a geologic formation in the southeastern Santa Cruz Mountains, in Santa Clara County, California.
The Capay Formation is a geologic formation in Yolo County, western Sacramento Valley, California. It preserves fossils dating back to the Paleogene period.
The Friars Formation is a geologic formation in San Diego County, Southern California.
The Goler Formation is a geologic formation in California. It preserves fossils dating back to the Paleogene period.
The La Jolla Group is a group of geologic formations in coastal southwestern San Diego County, Southern California. Its locations include the coastal La Jolla San Diego region.
The Llajas Formation is a non-marine to marine conglomerate geologic formation in Southern California.
The Mission Valley Formation is a marine sandstone geologic formation in the Mission Valley region of southwestern San Diego County in Southern California.
The Montgomery Creek Formation is a geologic formation in California. It preserves fossils dating back to the Paleogene period.
The Pomerado Conglomerate Formation is a geologic formation in southwestern San Diego County, California.
The Poway Group is a geologic group in San Diego County, Southern California. It preserves fossils dating back to the Paleogene period.
The Santa Susana Formation is a Paleogene period geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.
The Stadium Conglomerate is a geologic formation in San Diego County, California. It is found at the northern end of Mission Valley near San Diego Stadium.
The Tejon Formation is a Paleogene period geologic formation in California.
The San Francisquito Formation is a geologic formation in northern Los Angeles County, California.
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