Misplaced Pages

#793206

21-821: Mount San Jacinto State Park is in the San Jacinto Mountains , of the Peninsular Ranges system, in Riverside County, California , United States. A majority of the park is within the Santa Rosa and San Jacinto Mountains National Monument . The park is near the Greater Los Angeles and San Diego metropolitan areas. The Mount San Jacinto State Park encompasses the weathered granite summit of Mount San Jacinto , which at 10,834 feet (3,302 m) above sea level makes this

42-455: A state deficit reduction program. During the 2008–10 California budget crisis the legislature considered the state park systems funding, operations, and closures. By 2011 the legislature and Governor Jerry Brown enacted Assembly Bill 95 in March, which closed the park temporarily over certain days. San Jacinto Mountains The range extends for approximately 30 mi (50 km) from

63-446: A very triangular shape. This formation is known as a triangular facet ; however, this landform is not limited to fault scarps. Fault scarps may vary in size from a few centimeters to many meters. Fault-line scarps are typically formed due to the differential erosion of weaker rocks along a fault. Such erosion, occurring over long time periods, may shift a physical cliff far from the actual fault location, which may be buried beneath

84-704: Is one of the most abrupt in North America, going from sea level to 10,000 feet in a few miles. The height and steepness of the range points out that the San Jacinto fault and San Andreas fault are very active and very capable of producing major earthquakes (well in excess of magnitude 7). The last massive quake struck the southern segment of the San Andreas-San Jacinto fault complex more than 200 years ago making another major earthquake likely but not currently possible to predict. Rock slides from

105-474: Is the eastern boundary of the San Jacinto Valley , location of Hemet ; it also marks the eastern edge of the fast-growing Inland Empire region and Greater Los Angeles as a whole. Much of the range is embraced by the Santa Rosa and San Jacinto Mountains National Monument created in 2000. Mount San Jacinto State Park is located along the flank of San Jacinto Peak. Part of the eastern flank of

126-591: The San Jacinto Wilderness protects two areas to the north and south of Mount San Jacinto State Park (the location of San Jacinto Peak ). The 32,168 acre wilderness area is all within the San Bernardino National Forest and is managed by the U.S. Forest Service . Fault scarp A fault scarp is a small step-like offset of the ground surface in which one side of a fault has shifted vertically in relation to

147-558: The Salton Watershed to the east. The hills east of Live Oak Canyon Road, in San Bernardino County, are the northernmost extent of the range. The Coachella Valley stretches along the eastern side of the range, including the cities of Palm Springs and Rancho Mirage . San Gorgonio Pass separates the range from Mount San Gorgonio to the north. The western slope holds the community of Idyllwild . The range

168-707: The San Bernardino Mountains southeast to the Santa Rosa Mountains . The San Jacinto Mountains are the northernmost of the Peninsular Ranges , which run 1,500 km (930 mi) from Southern California to the southern tip of the Baja California Peninsula . The highest peak in the range is San Jacinto Peak (3,302 m; 10,834 ft)  NAVD 88 , and the range is also a Great Basin Divide landform for

189-585: The San Jacinto mountains are home to several endemic species, including the San Jacinto shieldback katydid and shaggy-haired alumroot . The communities of Idyllwild-Pine Cove , Mountain Center , and Pinyon Pines are located in the San Jacinto Mountains. The indigenous Cahuilla live in the deserts around the San Jacinto Mountains and used the range for hunting, foraging, and to escape

210-473: The case of Pakistan's coastal cliffs. The height of the scarp formation tends to be defined in terms of the vertical displacement along the fault. Active scarp faults may reflect rapid tectonic displacement and can be caused by any type of fault including strike-slip faults . Vertical displacement of ten meters may occur in fault scarps in volcanic bedrock, but is usually the result of multiple episodic movements of 5 to 10 meters per tectonic event. Due to

231-428: The crest, there are often a few patches of snow that may persist all year in shady spots. The range can be thought of as a sky island , as it contains numerous species of flora and fauna that cannot tolerate the triple-digit-Fahrenheit heat of the surrounding valleys. Vegetation found on the mountain flanks is strongly influenced by elevation and climate. Near the valley floor, conditions are often arid and hot, limiting

SECTION 10

#1732797666794

252-460: The dramatic uplift along the fault, which exposes its surface, the fault scarp is very prone to erosion. This is especially true if the material being uplifted consists of unconsolidated sediment. Weathering, mass wasting, and water runoff can soon wear down these bluffs, sometimes resulting in V-shaped valleys along runoff channels. Adjacent V-shaped valley formations give the remaining fault spurs

273-774: The northeast facing slope. The sequoias (native to the Sierra Nevada Mountains) were planted by the U.S. Forest Service in the 1970s, and are now apparently healthy and producing seedlings. As in many other western U.S areas, bark beetle infestations have caused loss of some of the forest trees in recent years, especially during droughts. Wildfires, such as the Mountain Fire and the Cranston Fire , have also temporarily denuded some areas. Like many other isolated high elevation mountains in California,

294-505: The other. The topographic expression of fault scarps results from the differential erosion of rocks of contrasting resistance and the displacement of land surface by movement along the fault. Differential movement and erosion may occur either along older inactive geologic faults, or recent active faults . Fault scarps often involve zones of highly fractured rock and discontinuities of hard and weak consistencies of rock. Bluffs can form from upthrown blocks and can be very steep, as in

315-419: The range are possible during major earthquakes in the future, as they have been in the past. These slides may potentially impact the communities built directly adjacent to the steep escarpment on the desert side of the range. The San Jacinto Mountains, like the neighboring San Bernardino Mountains, are a humid island above the surrounding desert and semi-desert. Annual precipitation ranges from about 15 inches at

336-720: The range is located within the Agua Caliente Indian Reservation . In 1990, the California Legislature created the Coachella Valley Mountains Conservancy to protect the mountains surrounding the valley. The range is a fault block of granitic rocks squeezed between the San Jacinto fault on the west and the San Andreas fault system on the east. The fault scarp on the northern and eastern side

357-970: The second highest peak and mountain range in Southern California . It is accessible by the Palm Springs Aerial Tramway and lies on the Pacific Crest Trail . Newton B. Drury Peak within Mount San Jacinto State Park is named after the fourth director of the U.S. National Park Service , who was also a long-term leader of the Save the Redwoods League . The state park was one of 48 state parks proposed for closure in January 2008 by then Governor Arnold Schwarzenegger as part of

378-531: The spine of the range. A popular walking route runs from the Palm Springs Aerial Tramway Mountain Station above Palm Springs, to the high point of the range, with a relatively mild climb of 2,400 ft (700 m) compared to other routes with more elevation gain. Above Idyllwild is historic Tahquitz Peak and other rock climbing areas. Established in 1964 by the U.S. Congress with the original Wilderness Act ,

399-540: The summer heat. The range was a frequent subject for Palm Springs artists Carl Eytel (1862–1925) and Paul Grimm (1892–1974). Hollywood film directors have used the mountains to shoot film scenes. In Frank Capra 's 1937 film, Lost Horizon , the Tahquitz Falls in Tahquitz Canyon was used as a scene. Today, the range is a destination for outdoor recreation. The Pacific Crest Trail runs along

420-434: The vegetative palette to species that are adapted to such conditions. At lower elevations forestation of the San Jacinto Mountains includes considerable California black oak associated with Coulter pine . At higher elevations, forests include Ponderosa pine , Jeffrey pine , Lodgepole pine , Incense cedar , White fir , Red fir , Manzanita , and deciduous oak. There is also a grove of over 150 giant sequoia trees on

441-623: The western base (and only 6 inches on the eastern, desert base) to as much as 32 inches above 5,500 feet (the mountain town of Idyllwild averages 27 inches per year). The coastal (western) side of the range receives more precipitation than the eastern (desert) side. Most of the precipitation falls between November and March, with a secondary maximum associated with thunderstorms during the summer monsoon season between July and September. The precipitation totals are highly variable from year to year. Snow usually falls above 4,000 feet elevation in winter. Above 8,000 feet, snow sometimes persists until June. Near

SECTION 20

#1732797666794
#793206