Search results
Results from the Health.Zone Content Network
The California Geological Survey has had many names over its history. The original Geological Survey of California was replaced in April 1880 by the new California State Mining Bureau. This was renamed the Division of Mines in 1927. In 1962 the division's name was expanded to be California Division of Mines and Geology, a name that lasted until ...
In 1961, the name was changed to Division of Mines and Geology (DMG), with a greater emphasis on environmental geology in urban areas. Following the 1971 San Fernando earthquake, DMG was authorized to delineate regulatory zones along faults and install instruments to record earthquake strong motion. In 1976, it was authorized to help assure ...
CGS is California's primary source of geologic and seismologic products and services for decision making by California's government agencies, its businesses and the public. Since the 1960s, when it was known as the California Division of Mines and Geology, CGS has produced many maps that depict landslide features and potential slope-failure areas.
Like many of California's estimated 47,000 abandoned mines, the Idaho-Maryland has a toxic legacy. An arsenic-laden tailing berm near the site of the abandoned mine. (Elias Funez / Union)
Porter (1932) [4] Wikimedia Commons has media related to 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 million years old). [5]
This list of mines in California is subsidiary to the list of mines article and lists working, defunct and future mines in the state and is organised by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list.
Established. 1999. Governing body. California Department of Parks and Recreation. The California State Mining and Mineral Museum is a museum of the state park system of California, United States. The museum exhibits and interprets the state's mineral resources and mining heritage. It is located in Mariposa, a city in central California, on the ...
South Table Mountain. South Table Mountain, at 39°33′23″N 121°33′00″W, is mostly privately owned, and contains the "O", which is a big "O" on the side of the plateau, that stands for "Oroville", the city that it towers over. Dedicated on June 8, 1929 by Oroville High School (OHS) alumni Morrow Steadman, the "big O" has a concrete ...