| Harold Formation Stratigraphic range: Cenozoic Era | |
|---|---|
| Type | Geologic formation |
| Overlies | Crowder Formation |
| Location | |
| Region | Mojave Desert, San Bernardino County, California |
| Country | United States |
The Harold Formation is a geologic formation in the Central Mojave Desert, west of Victorville and north of the San Gabriel Mountains, in eastern San Bernardino County, Southern California. [1]
The formation, with Shoemaker Gravel in other areas, overlies the Pliocene epoch Crowder Formation. [2]
The Harold Formation preserves Cenozoic Era fossils. [3]
The Pacific Coast Ranges are the series of mountain ranges that stretch along the West Coast of North America from Alaska south to Northern and Central Mexico. Although they are commonly thought to be the westernmost mountain range of the continental United States and Canada, the geologically distinct Insular Mountains of Vancouver Island lie further west.
The Transverse Ranges are a group of mountain ranges of southern California, in the Pacific Coast Ranges physiographic region in North America. The Transverse Ranges begin at the southern end of the California Coast Ranges and lie within Santa Barbara, Ventura, Los Angeles, San Bernardino, Riverside and Kern counties. The Peninsular Ranges lie to the south. The name Transverse Ranges is due to their east–west orientation, making them transverse to the general northwest–southeast orientation of most of California's coastal mountains.
The Merced Formation is a geologic formation in California, and also in Oregon and Washington state. It is named for Lake Merced, a natural lake on the western San Francisco coastline.
The Etchegoin Formation is a Pliocene epoch geologic formation in the lower half of the San Joaquin Valley in central California.
The Crowder Formation is a geologic formation in the Central and Western Mojave Desert, in northern Los Angeles County and eastern San Bernardino County, in Southern California.
The Tulare Formation is a Pliocene to Holocene epoch geologic formation in the central and southern San Joaquin Valley of central 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 San Joaquin Formation is a Pliocene epoch geologic formation in the lower half of the San Joaquin Valley in central California.
The Friars Formation is a geologic formation in San Diego County, 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 Santa Susana Formation is a Paleogene period geologic formation in the Simi Hills and western Santa Susana Mountains of southern California.
The Scripps Formation is a geologic formation in coastal San Diego County, 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.
The Brawley Formation is a geologic formation in the Colorado Desert of southern California, located in northwestern Imperial County and eastern San Diego County.
The Tecopa Lake Beds is a Blancan Pleistocene geologic formation in the Mojave Desert in eastern California. It is in the Tecopa area, east of Death Valley, in southeastern Inyo and northeastern San Bernardino County.
The Palm Spring Formation is a Pleistocene Epoch geologic formation in the eastern Colorado Desert of Imperial County and San Diego County County, Southern California.
The Imperial Formation is the name of two distinct and unrelated geologic formations in North America, of different geologic Eras.
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