Silurian Hills | |
---|---|
Highest point | |
Elevation | 1,056 ft (322 m) |
Geography | |
location of Silurian Hills in California [1] | |
Country | United States |
State | California |
Region | Mojave Desert |
District | San Bernardino County |
Range coordinates | 35°31′59.912″N116°7′38.059″W / 35.53330889°N 116.12723861°W |
Topo map | USGS Silurian Lake |
The Silurian Hills are a small range of hills in the Mojave Desert, southeast of Death Valley National Park, in southern California. The surrounding lower elevation lands provide important connectivity habitat between nearby mountain ranges. The area provides critical habitat and movement corridors for bighorn sheep, desert tortoises, nesting golden eagles, kit foxes and burrowing owls. [2] The Silurian Valley is a largely undisturbed valley that supports wildlife and is an important link for this portion of the northern Mojave Desert. [3]
The range lies in a northwest-southeasterly direction, and is about 9 miles (14 km) long. The Shadow Mountains lies to the east, and the Avawatz Mountains, on the west, across the Silurian Valley. [4] Salt Creek [5] flows intermittently through the 19-mile-long (30 km) Silurian Valley connecting Silver Lake [6] to the south with Death Valley to the north. [7] Other nearby ranges are Salt Spring Hills and Sperry Hills.
Highway 127, traversing through the Silurian Valley in a northwest-southeasterly direction, connects three protected areas: Joshua Tree National Park, the Mojave National Preserve and Death Valley National Park. This portion of highway 127 has been described as one of the most scenic in the state. [3] The small community of Halloran Springs near Interstate 15 lies about 12 miles (19 km) to the southeast.
The Old Spanish Trail developed several variations to take advantage of better water sources and to shorten the length and time of travel. The Kingston Cutoff went southwest from Mountain Springs, Nevada, to Silurian Lake. [8] [9]
Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is thought to be the hottest place on Earth during summer.
California is a U.S. state on the western coast of North America. Covering an area of 163,696 sq mi (423,970 km2), California is among the most geographically diverse states. The Sierra Nevada, the fertile farmlands of the Central Valley, and the arid Mojave Desert of the south are some of the geographic features of this U.S. state. It is home to some of the world's most exceptional trees: the tallest, most massive, and oldest. It is also home to both the highest and lowest points in the 48 contiguous states.
The Great Basin is the largest area of contiguous endorheic watersheds, those with no outlets to the ocean, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California. It is noted for both its arid climate and the basin and range topography that varies from the North American low point at Badwater Basin in Death Valley to the highest point of the contiguous United States, less than 100 miles (160 km) away at the summit of Mount Whitney. The region spans several physiographic divisions, biomes, ecoregions, and deserts.
The Mojave Desert is a desert in the rain shadow of the southern Sierra Nevada mountains and Transverse Ranges in the Southwestern United States. Named for the indigenous Mohave people, it is located primarily in southeastern California and southwestern Nevada, with small portions extending into Arizona and Utah.
The Mojave River is an intermittent river in the eastern San Bernardino Mountains and the Mojave Desert in San Bernardino County, California, United States. Most of its flow is underground, while its surface channels remain dry most of the time, except for the headwaters and several bedrock gorges in the lower reaches.
The Black Rock Desert is a semi-arid region of lava beds and playa, or alkali flats, situated in the Black Rock Desert–High Rock Canyon Emigrant Trails National Conservation Area, a silt playa 100 miles (160 km) north of Reno, Nevada, that encompasses more than 300,000 acres (120,000 ha) of land and contains more than 120 miles (200 km) of historic trails. It is in the northern Nevada section of the Great Basin with a lakebed that is a dry remnant of Pleistocene Lake Lahontan.
The Great Basin Desert is part of the Great Basin between the Sierra Nevada and the Wasatch Range. The desert is a geographical region that largely overlaps the Great Basin shrub steppe defined by the World Wildlife Fund, and the Central Basin and Range ecoregion defined by the U.S. Environmental Protection Agency and United States Geological Survey. It is a temperate desert with hot, dry summers and snowy winters. The desert spans large portions of Nevada and Utah, and extends into eastern California. The desert is one of the four biologically defined deserts in North America, in addition to the Mojave, Sonoran, and Chihuahuan Deserts.
The San Bernardino Mountains are a high and rugged mountain range in Southern California in the United States. Situated north and northeast of San Bernardino and spanning two California counties, the range tops out at 11,503 feet (3,506 m) at San Gorgonio Mountain – the tallest peak in Southern California. The San Bernardinos form a significant region of wilderness and are popular for hiking and skiing.
The Santa Rosa Mountains are a short mountain range in the Peninsular Ranges system, located east of the Los Angeles Basin and northeast of the San Diego metropolitan area of southern California, in the southwestern United States.
The Amargosa River is an intermittent waterway, 185 miles (298 km) long, in southern Nevada and eastern California in the United States. The Amargosa River is one out of two rivers located in the California portion of the Mojave Desert with perenial flow. It drains a high desert region, the Amargosa Valley in the Amargosa Desert northwest of Las Vegas, into the Mojave Desert, and finally into Death Valley where it disappears into the ground aquifer. Except for a small portion of its route in the Amargosa Canyon in California and a small portion at Beatty, Nevada, the river flows above ground only after a rare rainstorm washes the region. A 26-mile (42 km) stretch of the river between Shoshone and Dumont Dunes is protected as a National Wild and Scenic River. At the south end of Tecopa Valley the Amargosa River Natural Area protects the habitat.
The Great Salt Lake Desert is a large dry lake in northern Utah, United States, between the Great Salt Lake and the Nevada border. It is a subregion of the larger Great Basin Desert, and noted for white evaporite Lake Bonneville salt deposits including the Bonneville Salt Flats.
The Sacramento Mountains are a mountain range in the Eastern Mojave Desert and within Mojave Trails National Monument, in San Bernardino County, California.
The Grapevine Mountains is a mountain range located along the border of Inyo County, California and Nye County, Nevada in the United States. The mountain range is about 22 miles (35 km) long and lies in a northwest-southeasterly direction along the Nevada-California state line. The range reaches an elevation of 8,738 feet (2,663 m) at Grapevine Peak, near Phinney Canyon on the Nevada side. Daylight Pass is at the southern end of the range. Most of the Grapevine Mountain chain is in Death Valley National Park.
The deserts of California are the distinct deserts that each have unique ecosystems and habitats. The deserts are home to a sociocultural and historical "Old West" collection of legends, districts, and communities, and they also form a popular tourism region of dramatic natural features and recreational development. Part of this region was even proposed to become a new county due to cultural, economic and geographic differences relative to the rest of the more urban region.
The Dumont Hills are a low mountain range in the Mojave Desert, in northeastern San Bernardino County, southern California.
The Saddle Peak Hills are a mountain range in the Mojave Desert, in northern San Bernardino County, southern California.
The Salt Spring Hills are a low mountain range in the Mojave Desert, in northern San Bernardino County, California. They are just outside the southeastern corner of Death Valley National Park, southeast of the Saddle Peak Hills. The road between Shoshone and Baker passes through the hills.
The Sperry Hills are a low mountain range in the northern Mojave Desert—southern Amargosa Desert region, in northeastern San Bernardino County, southern California.
The Valjean Hills are a low mountain range in the eastern Mojave Desert, in northern San Bernardino County, southern California.
Silurian Valley is a valley in the Mojave Desert, in San Bernardino County, California. The valley trends in a north–south direction, its mouth located just southeast of the south end of Death Valley at 35°37′17″N116°16′07″W. Its head is at 35°23′36″N116°08′02″W. The valley is drained by Salt Creek a tributary of the Amargosa River and contains Silurian Lake and Dry Sand Lake.