The Chalk Hills are a north–south-running low 'mountain' range in the

San Fernando Valley The San Fernando Valley, known locally as the Valley, is an urbanized valley in Los Angeles County, California. Located to the north of the Los Angeles Basin, it contains a large portion of the City of Los Angeles, as well as unincorporated ar ...

perpendicular to and adjoining the

Santa Monica Mountains The Santa Monica Mountains is a coastal mountain range in Southern California, next to the Pacific Ocean. It is part of the Transverse Ranges. Because of its proximity to densely populated regions, it is one of the most visited natural areas in ...

. They are located in the Woodland Hills District of the

City of Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world ...

Southern California Southern California (commonly shortened to SoCal) is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban ...

. They run between DeSoto and Winnetka Avenues, from south of

Ventura Boulevard Ventura Boulevard is one of the primary east–west thoroughfares in the San Fernando Valley region of the City of Los Angeles, California. Ventura Boulevard is one of the oldest routes in the San Fernando Valley as it was originally a part ...

north to near Victory Boulevard.

Geography

The Chalk Hills host an expansive, low-density, semi-urban suburb of the San Fernando Valley. Los Angeles Pierce College is located on the northern portion of the Chalk Hills. Historically the free-flowing

Los Angeles River , name_etymology = , image = File:Los Angeles River from Fletcher Drive Bridge 2019.jpg , image_caption = L.A. River from Fletcher Drive Bridge , image_size = 300 , map = LARmap.jpg , map_size ...

ran around that portion.

U.S. Route 101 U.S. Route 101, or U.S. Highway 101 (US 101), is a north–south United States Numbered Highway that runs through the states of California, Oregon, and Washington, on the West Coast of the United States. It is also known as (The Royal Roa ...

, the Ventura Freeway, cuts deeply through the southern part since the 1960s. The range has a white soil and bedrock, resembling chalk, and was a 'white landform' Valley landmark before suburban development on it in the 1960s. The white rocks are marine shales. Geologists are unsure of its relationship with other rock formations in Southern California, although

Thomas Dibblee Thomas Wilson Dibblee, Jr. (11 October 1911, in Santa Barbara, California – 17 November 2004, in Santa Barbara, California) was an American geologist best known for his geological mapping. He is also known, together with co-author Mason H ...

has identified it as a member of the

Sisquoc Formation The Sisquoc Formation is a sedimentary geologic unit widespread in Southern California, both on the coast and in mountains near the coast. Overlying the Monterey Formation, it is of upper Miocene and lower Pliocene age (from about 4 to 6 mil ...

.Dibblee, T.W., and Ehrenspeck, H.E., ed., 1992, Geologic map of the Topanga and Canoga Park (south 1/2) quadrangles, Los Angeles County, California: Dibblee Geological Foundation, Dibblee Foundation Map DF-35, scale 1:24,000 A small remnant

California oak woodland California oak woodland is a plant community found throughout the California chaparral and woodlands ecoregion of California in the United States and northwestern Baja California in Mexico. Oak woodland is widespread at lower elevations in coastal ...

plant community A plant community is a collection or association of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types. The components of each plant ...

remains in an undeveloped southeastern area of the Pierce campus.

Local ranges

— ''adjacent on south'' *

Simi Hills The Simi Hills are a low rocky mountain range of the Transverse Ranges in eastern Ventura County and western Los Angeles County, of southern California, United States. Geography The Simi Hills are aligned east-west and run for , and average aro ...

— ''to west'' *

Santa Susana Mountains The Santa Susana Mountains are a transverse range of mountains in Southern California, north of the city of Los Angeles, in the United States. The range runs east-west, separating the San Fernando and Simi valleys on its south from the Santa C ...

— ''to north, across valley'' *

San Gabriel Mountains The San Gabriel Mountains ( es, Sierra de San Gabriel) are a mountain range located in northern Los Angeles County and western San Bernardino County, California, United States. The mountain range is part of the Transverse Ranges and lies betw ...

— ''to northeast, across valley'' *

Verdugo Mountains The Verdugo Mountains, also known as the Verdugo Hills or simply The Verdugos, are a small, rugged mountain range of the Transverse Ranges system in Los Angeles County, California. Located just south of the western San Gabriel Mountains, the Ve ...

— ''to east, across valley''

References

Hills of California Transverse Ranges Mountain ranges of Los Angeles County, California Geography of the San Fernando Valley Los Angeles Pierce College Santa Monica Mountains Woodland Hills, Los Angeles Mountain ranges of Southern California {{LosAngeles-geo-stub

Geography

Local ranges

See also

References