California Coast Ranges




This article is about the mountain range. For the UNESCO Biosphere reserve, see California Coast Ranges (reserve). For the entire range of the Pacific Rim, see Pacific Coast Ranges.































California Coast Range

Conepeak 135711.jpg
Santa Lucia Range

Highest point
Peak Mount Linn
Elevation 8,098 ft (2,468 m)
Dimensions
Length 400 mi (640 km)
Geography
Country United States
State California
Parent range Pacific Coast Ranges

The Coast Ranges of California span 400 miles (640 km) from Del Norte or Humboldt County, California, south to Santa Barbara County.[1] The other three coastal California mountain ranges are the Transverse Ranges, Peninsular Ranges and the Klamath Mountains.[1]


Physiographically, they are a section of the larger Pacific Border province, which in turn are part of the larger Pacific Mountain System physiographic division. UNESCO has included the "California Coast Ranges Biosphere Reserve" in its Man and the Biosphere Programme of World Network of Biosphere Reserves since 1983.[2]




Contents






  • 1 Physiography


  • 2 Mineralogy


  • 3 Northern Coast Ranges


    • 3.1 Geography


    • 3.2 Outer and Inner ranges


    • 3.3 Natural history




  • 4 Southern Coast Ranges


    • 4.1 Geography


    • 4.2 Natural history




  • 5 Ranges


  • 6 See also


  • 7 References


  • 8 External links





Physiography




Northern and Southern Coast Ranges and other major mountain ranges of California


The northern end of the California Coast Ranges overlap the southern end of the Klamath Mountains for approximately 80 miles on the west. They extend southward for more than 600 miles to where the coastline turns eastward along the Santa Barbara Channel, around the area of Point Conception. Here the southern end meets the Los Angeles Transverse Ranges, or Sierras de los Angeles.[3] The rocks themselves that comprise the mountains are of a great variety and widely varying geologic ages. Most of the rocks were formed during the Tertiary, Cretaceous and Jurassic periods. Most were deposited on the sea bottom as sediments, but in many places also had the cracks, crevices and other gaps infused with molten lava or other masses of igneous rock, which were forced in molten condition into the sedimentary rocks. All of the range has been folded and faulted during several periods, with erosion of the softer rock giving much of the current appearance.



Mineralogy


The California Ranges had a high production of mercury following the discovery of gold in the Sierra Nevada. In the Cache Creek Basin, Cenozoic cinnabar deposits near Clear Lake are the northernmost of a group of similar deposits associated with volcanism and migration of a transform fault system. During 1877, these deposits hit their peak production of mercury, producing approximately 2,776 metric tons. These abandoned mines are still a source of mine waste runoff in Cache Creek and other downstream bodies of water.[4]



Northern Coast Ranges


The Northern Coast Ranges are a section of the California Coast Ranges. They run parallel to the Pacific Coast from the North San Francisco Bay Area to coastal Del Norte County. The Klamath Mountains, including the Siskiyou Mountains sub-range, lie to the north and northeast. The Southern Coast Ranges lie to the south.




Outer Northern Coast Ranges: King Range meets the sea on the Lost Coast.



Geography


The Northern Coast Ranges run north-south parallel to the coast. Component ranges within the Northern Coast Ranges include the Mendocino Range of western Mendocino County and the Mayacamas, Sonoma, and Vaca Mountains and the Marin Hills of the North Bay.


They also include the King Range, which meet the sea in the "Lost Coast" region. The southernmost peak of the Northern Coast Ranges is Mount Tamalpais.


The highest point in the Northern Coast Ranges is Mount Linn, at 8,098 ft. (2,468 m).



Outer and Inner ranges


The Northern Coast Ranges consist of two main parallel belts of mountains, the Outer Northern Coast Ranges lying along the coast, and the Inner Northern Coast Ranges running inland to the east. They are separated by a long system of valleys. The northern valley portion is drained by the Eel River and its tributaries, and the southern by the Russian River. A series of short rivers, including the Mattole, Gualala, and Navarro rivers, drain the western slopes of the ranges. The eastern slopes of the ranges drain into the Sacramento Valley. Clear Lake lies in the southeast portion of the range, and drains eastward via Cache Creek.


U.S. Route 101 runs generally north-south in the valleys between the Outer and Inner Northern Coast Ranges.



Natural history


The seaward face of the coastal Outer Northern Coast Ranges is part of the Northern California coastal forests ecoregion, home to lush forests of Coast Redwood and Coast Douglas-fir.[1]


The inland and dryer Inner Northern Coast Ranges, are part of the California chaparral and woodlands ecoregion, home to a number of plant communities including: mixed evergreen forest; oak woodland; and Interior chaparral and woodland. A major specific plant community of the inner ranges is Mediterranean California Lower Montane Black Oak-Conifer Forest, which supports particularly high biodiversity within the California Coast Ranges, including the nominate California Black Oak.


Columbian Black-tailed Deer are the most widespread large mammal, after humans, of the Northern Coast Ranges. The rivers in the ranges are home to several species of salmon.



Southern Coast Ranges




Monument Peak over Milpitas, California



Geography


The Southern Coast Ranges, of the California Coast Ranges in the Pacific Coast Ranges System, run north and south, parallel to the Pacific Coast in north-central through north-southern California. The Southern Coast Ranges begin on the San Francisco Peninsula and in the East San Francisco Bay Area, and run south into Santa Barbara County. The Transverse Ranges lie to the south. The San Joaquin Valley is on the east, and Pacific Ocean on the west.


The Southern Coast Ranges include the Berkeley Hills, the Diablo Range, the Santa Cruz Mountains, the Gabilan Range, the Santa Lucia Range and Sierra de Salinas, the Temblor Range, and the Sierra Madre Mountains.


As for the Northern Coast Ranges, there are Outer Southern Coast Ranges along the Pacific Ocean on the west, and Inner Southern Coast Ranges to the east, inland to the San Joaquin Valley. The central and southern San Francisco Bay and the Salinas Valley lie between them.


The highest point of the Southern Coast Ranges is Junipero Serra Peak in the Santa Lucia Range, at 5,862 feet (1,787 m).[5] Other peaks include Mount Diablo at 3,864 feet (1,178 m), and Mount Hamilton at 4,196 feet (1,279 m).



Natural history


The Southern Coast Ranges have a predominantly Mediterranean climate, and are primarily within the California chaparral and woodlands ecoregion. However, the moister areas of the Santa Cruz Mountains lie within the Northern California coastal forests ecoregion, characterized by forests of Coast redwood. Isolated groves of Coast redwoods are also found in the Big Sur region of the Santa Lucia Range, making them the southernmost natural occurrences of the species.


Some of the rarest forest habitat that occurs in the California Coast Ranges are the Maritime Coast Range Ponderosa Pine forests of the western Santa Cruz Mountains.[6] These isolated groves may include Ponderosa pine, Douglas fir, and knobcone pine.


Notably, the highest slopes of the Santa Lucias contain small patches of Sierran Conifer forest, including Incense Cedar, and Ponderosa, Jeffrey, and Sugar Pines. Steep rocky slopes harbor the endemic Santa Lucia Fir, the rarest species of fir on earth.


The California chaparral and woodlands ecoregion has a great range of plant communities in the Southern Coast Ranges, including mixed evergreen forests, oak woodland and savannas, grasslands, northern coastal scrub, and the Monterey Pine woodlands of the Monterey Peninsula and two other coastal enclaves of the Santa Lucia Range. The name "chaparral" comes from the Spanish word chaparro, applied to California scrub oaks and Coastal scrub oaks.


Common tree species of oak woodlands include oaks, California bay, and buckeye.[5]
Riparian species of the coast ranges include sycamore, White alder, Willows, and Big-Leaf Maple.


Columbian Black-tailed deer occupy the northern and more coastal portions of the Southern Coast Ranges, and California mule deer occupy inland and southernmost portions of the Southern Coast Ranges.



Ranges











See also



  • California Coast Ranges topics

  • Coast Range Geomorphic Province

  • Inner Coast Ranges

  • Natural history of the California Coast Ranges

  • Mountain ranges of California

  • North American Cordillera



References





  1. ^ abc California Coastal Commission (November 1987). The California Coastal Resource Guide. University of California Press. pp. 384 pages. ISBN 9780520061866. Archived from the original on 2007-12-22..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}


  2. ^ "Searchable list of UNESCO World Network of Biosphere Reserves". Ecological Sciences for Sustainable Development. The United Nations Organization for Education, Science and Culture (UNESCO). Retrieved 20 October 2012. also pdf http://www.unesco.org/new/fileadmin/MULTIMEDIA/HQ/SC/pdf/sc_mab_BR2012.pdf


  3. ^ Diller, Joseph Silas (1915). Guidebook of the Western United States: Part D. The Shasta Route and Coastline. U.S. Geological Survey, Bulletin 614, U.S. Government Printing Office. p. 7.
    ISBN 1130070328, 9781130070323.


  4. ^ Domagalski, Joseph L.; Alpers, Charles N.; Slotten, Darell G.; Suchanek, Thomas H.; Ayers, Shaun M. (2004). Mercury and methylmercury concentrations and loads in the Cache Creek Basin, California, January 2000 - May 2001. U.S. Geological Survey, Scientific Investigations Report 2004-5037. p. 3. ISBN 1-4289-8430-5.


  5. ^ ab Ron Adkison (1 July 2000). Hiking Northern California. Globe Pequot. p. 26. ISBN 978-1-56044-701-6. Retrieved 19 January 2012.


  6. ^ Earth Metrics Inc. (1990) Environmental Impact Report for the Scotts Valley Redevelopment Area, State of California Clearinghouse Report 7888, Sacramento, California




External links







  • Early History of the California Coast, a National Park Service Discover Our Shared Heritage Travel Itinerary

  • Map: Where the Coast Ranges Meet the Klamath Mountains

  • Climate of Coastal Northwest California











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