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Sibley Volcanic Regional Preserve
Robert Sibley Volcanic Regional Preserve is located in the Oakland Hills of the East Bay region of the San Francisco Bay Area, California. The park is part of the East Bay Regional Parks District (EBRPD), covers , and lies east of Oakland, partly in Alameda County and partly in Contra Costa County. It can be entered from Oakland via Skyline Boulevard, or from Contra Costa County via Old Tunnel Road. History The park was one of the first three parks established by the East Bay Regional Parks District (EBRPD) in 1936. It was originally named Round Top Regional Park. Round Top (elevation ) is an extinct volcano in the Oakland Hills which started to erupt 10.2 Million years ago. It is home to at least two stone labyrinths of recent origin. The park was renamed after the second president of the EBRPD, Robert Sibley, shortly after his death. U.C. Berkeley Professor Emeritus Garniss Curtis studied the Sibley Regional Preserve extensively, dating the volcano to be 10.2 million years old. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oakland, California
Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast of the United States, West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the Bay Area and the List of largest California cities by population, eighth most populated city in California. With a population of 440,646 in 2020, it serves as the Bay Area's trade center and economic engine: the Port of Oakland is the busiest port in Northern California, and the fifth busiest in the United States of America. An act to municipal corporation, incorporate the city was passed on May 4, 1852, and incorporation was later approved on March 25, 1854. Oakland is a charter city. Oakland's territory covers what was once a mosaic of California coastal prairie, California coastal terrace prairie, oak woodland, and north coastal scrub. In the late 18th century, it became part of a large ''rancho'' grant in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hayward Fault
The Hayward Fault Zone is a right-lateral strike-slip geologic fault zone capable of generating destructive earthquakes. This fault is about long, situated mainly along the western base of the hills on the east side of San Francisco Bay. It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. The Hayward Fault is parallel to the San Andreas Fault, which lies offshore and through the San Francisco Peninsula. To the east of the Hayward Fault lies the Calaveras Fault. In 2007, the Hayward Fault was discovered to have merged with the Calaveras Fault east of San Jose at a depth of , with the potential of creating earthquakes much larger than previously anticipated. Some geologists have suggested that the Southern Calaveras should be renamed as the Southern Hayward. North of San Pablo Bay is the Rodgers Creek Fault, which was shown in 2016 to be linked with the Hayward Faul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Vetch Vicia Americana (18460840912)
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthony Chabot Regional Park
Anthony Chabot Regional Park is a regional park in Oakland, Alameda County, California in the United States. It is part of the East Bay Regional Park District system, and covers in the San Leandro Hills adjacent to Oakland, San Leandro and Castro Valley. Popular activities include hiking, cycling and horseback riding. A gun range operated by the Chabot Gun Club was shut down in 2016, following complaints about pollution. The terrain of the park is often steep, consisting of grasslands, chaparral, and eucalyptus groves. Recreational activities The park is adjacent to Lake Chabot Regional Park, Redwood Regional Park, Dunsmuir Ridge Open Space, and the Upper San Leandro Reservoir. There are trails for hiking, horseback riding, and cycling that connect to other regional parks. Trailheads are located along Redwood Road and Skyline Boulevard in Oakland. The park houses two equestrian centers for private horse boarding and lessons: Chabot Equestrian Center and Skyline Ranch Equestrian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildcat Canyon Regional Park
Wildcat Canyon Regional Park is a East Bay Regional Parks District park bordering the city of Richmond in Contra Costa County in the San Francisco Bay Area of California. It includes a portion of Wildcat Canyon as well as a portion of the adjoining San Pablo Ridge, and is directly connected to the more heavily used Tilden Regional Park. History The area was inhabited by Native Americans until 1772 when a group of "Catalan volunteers" led by Pedro Fagas and Fray Juan Crespi came across the settlement while searching for trade routes north beyond the Carquinez Strait. The Spanish settled the general area and by 1840 had parceled the land for missions and cattle raising coming into conflict with the historical communal practices of the Native Americans. Juan Jose and Victor Castro were given rights to all vacant land in the area. They kept some valuable lands and gave much of the land over to municipal authorities for water usage. In 1935, the East Bay Regional Parks District a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibley Volcanic Regional Preserve - Stierch B , a 1904 New York disaster
{{disambiguation, geo ...
Sibley may refer to: * Sibley (surname) * Sibley (automobile) Places and landmarks In Canada: * Sibley Peninsula, Ontario (on Lake Superior) In the United States: * Sibley, Illinois * Sibley, Iowa * Sibley, Kansas * Sibley, Louisiana * Sibley, Mississippi * Sibley, Missouri * Sibley, North Dakota * Sibley County, Minnesota * Sibley Memorial Hospital, in Washington, D.C. * Robert Sibley Volcanic Regional Preserve, in California * Sibley Park Other * Sibley–Ahlquist taxonomy of birds, a phenetic DNA-based taxonomy of birds * Sibley's, a former New York state department store chain * Sibley's Shoes, a former Michigan retail footwear chain * Sibley fire The Sibley fire was a 1904 fire in Rochester, New York. The worst conflagration in the city's history at the time, the fire broke out shortly before 5 o'clock on February 26, 1904, in the basement of the Rochester Dry Goods company's store at 156 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dike (geology)
A dike or dyke, in Geology, geological usage, is a sheet of rock that is formed in a Fracture (geology), fracture of a pre-existing rock body. Dikes can be either Intrusive rock, magmatic or Sedimentary rock, sedimentary in origin. Magmatic dikes form when magma flows into a crack then solidifies as a sheet intrusion, either cutting across layers of rock or through a contiguous mass of rock. Clastic dikes are formed when sediment fills a pre-existing crack.Essentials of Geology, 3rd Ed, Stephen Marshak Magmatic dikes A magmatic dike is a sheet of igneous rock that cuts across older rock beds. It is formed when magma fills a fracture in the older beds and then cools and solidifies. The dike rock is usually more resistant to weathering than the surrounding rock, so that erosion exposes the dike as a natural wall or ridge. It is from these natural walls that dikes get their name. Dikes preserve a record of the fissures through which most mafic magma (fluid magma low in silica) reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial planet, rocky planet or natural satellite, moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of volcanism on Venus, Venus, which cover ~80% of the surface, are basaltic; the lunar mare, lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claremont Formation
Claremont may refer to: Places Australia *Claremont, Ipswich, a heritage-listed house in Queensland * Claremont, Tasmania, a suburb of Hobart * Claremont, Western Australia, a suburb of Perth ** Claremont Football Club, West Australian Football League ** Claremont Oval, home stadium for Claremont Football Club * Claremont Airbase, aerial firefighting base near Brukunga, South Australia Canada * Claremont, Ontario Ireland * Claremount, County Westmeath Jamaica * Claremont, Jamaica South Africa * Claremont, Cape Town * Claremont, a suburb in the western side of Pretoria United Kingdom * Claremont (country house), a stately house in Surrey * Claremont, Salford, Greater Manchester * Claremont (ward), electoral ward for Claremont, Salford United States * Claremont, California * Claremont, Oakland/Berkeley, California, a neighborhood in two adjoining cities * Claremont, Illinois * Claremont, Minnesota * Claremont, Mississippi * Claremont (Port Gibson, Missis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orinda Formation
The Orinda Formation is a Miocene epoch geologic formation in the Berkeley Hills of the East Bay region of the San Francisco Bay Area, California.USGS.gov: "Upper Cretaceous and Lower Tertiary Rocks Berkeley and San Leandro Hills, California" by J. E. Case, GEOLOGICAL SURVEY BULLETIN 1251-J, 1968. It is found within and . Geology The Orinda Formation is a coarse alluvial[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UC Berkeley
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public university, public land-grant university, land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant university and the founding campus of the University of California system. Its fourteen colleges and schools offer over 350 degree programs and enroll some 31,800 undergraduate and 13,200 graduate students. Berkeley ranks among the world's top universities. A founding member of the Association of American Universities, Berkeley hosts many leading research institutes dedicated to science, engineering, and mathematics. The university founded and maintains close relationships with three United States Department of Energy National Laboratories, national laboratories at Lawrence Berkeley National Laboratory, Berkeley, Lawrence Livermore National Laboratory, Livermore and Los Alamos National Laboratory, Los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Coast Ranges
The Coast Ranges of California span from Del Norte or Humboldt County, California, south to Santa Barbara County. The other three coastal California mountain ranges are the Transverse Ranges, Peninsular Ranges and the Klamath Mountains. Physiographically, they are a section of the larger Pacific Border province, which in turn is 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. * Physiography 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''. The rocks themselves that com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
