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The Santa Rosa Plateau Ecological Reserve was assembled in several stages; two parcels, comprising 3,100 acres (13 km 2), were purchased by The Nature Conservancy in 1984. The intervening parcels were purchased in the 1990s by the State of California , the Riverside County Regional Park and Open-Space District , [ 3 ] and the Metropolitan Water ...
The oldest rocks in California date back 1.8 billion years to the Proterozoic and are found in the San Gabriel Mountains, San Bernardino Mountains, and Mojave Desert.The rocks of eastern California formed a shallow continental shelf, with massive deposition of limestone during the Paleozoic, and sediments from this time are common in the Sierra Nevada, Klamath Mountains and eastern Transverse ...
The Santa Rosa Mountains extend for approximately 30 miles (48 km) along the western side of the Coachella Valley within Riverside, San Diego, and Imperial Counties in Southern California. The range connects to the San Jacinto Mountains on its northern end, where the Pines to Palms Highway— California State Route 74 , crosses them.
Geologic map of the Yucca Mountain region, Nye County, Nevada: U.S. Geological Survey Geologic Investigations Series. Vol. I-2755. Denver, Colorado: U.S. Geological Survey; Matthew E. Brueseke & William K. Hart (2008). Geology and Petrology of the Mid-Miocene Santa Rosa-Calico Volcanic Field, northern Nevada (PDF). Reno, Nevada: Mackay School ...
Map of California topography and geomorphic provinces California's major mountain ranges. California is a U.S. state on the western coast of North America.Covering an area of 163,696 sq mi (423,970 km 2), California is among the most geographically diverse states.
Southeast of the Elsinore Mountains is the Santa Rosa Plateau, named for the Rancho Santa Rosa that once encompassed it. At the south end of the plateau there is a steep escarpment from the basalt capped mesas that line it, that descends from about 500 feet at Mesa de Burro to Sandia Creek on the east to about 1800 feet at Avenaloca Mesa to De ...
The Santa Rosa and San Jacinto Mountains National Monument is managed by a mosaic of entities, including the Bureau of Land Management (89,500 acres (362 km 2)), US Forest Service (65,000 acres (260 km 2)), Cahuilla peoples (19,800 acres (80 km 2)), California Department of Parks and Recreation (12,900 acres (52 km 2)), other State of ...
The main park access is from the north via the city of Santa Rosa. An important secondary access is from the Lawndale Road trailhead in Kenwood , which access is the shortest route to Ledson Marsh. There are 35 miles (56 km) of trails for running, hiking, mountain biking , and trail riding . [ 1 ]