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Simi Valley (valley)
Simi Valley (Chumash: ''Shimiyi'') is a synclinal valley in Southern California in the United States. It is an enclosed or hidden valley surrounded by mountains and hills. It is connected to the San Fernando Valley to the east by the Santa Susana Pass and the 118 (Ronald Reagan) freeway, and in the west the narrows of the Arroyo Simi and the Reagan Freeway connection to Moorpark. The relatively flat bottom of the valley contains soils formed from shales, sandstones, and conglomerates eroded from the surrounding hills of the Santa Susana Mountains to the north, which separate Simi Valley from the Santa Clara River Valley, and the Simi Hills. Geology Simi Valley borders the Santa Susana Mountains to the north and Simi Hills to the east and south. The valley covers an area of about 62 square miles in southern Ventura County, bordering the San Fernando Valley in Los Angeles County. The Santa Clara River Valley occupies the northwestern corner of the valley. Mountainous terrain of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles County
Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the most populous non–state-level government entity in the United States. Its population is greater than that of 40 individual U.S. states. At and with 88 incorporated cities and many unincorporated areas, it is home to more than one-quarter of California residents and is one of the most ethnically diverse counties in the United States. Its county seat, Los Angeles, is also California's most populous city and the second-most populous city in the United States, with about 3.9 million residents. In recent times, statewide droughts in California have placed great strain on the County’s (and the City of Los Angeles's) water security. History Los Angeles County is one of the original counties of California, created at the time of stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breccia
Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of different origins, as indicated by the named types including sedimentary breccia, tectonic breccia, igneous breccia, impact breccia, and hydrothermal breccia. A megabreccia is a breccia composed of very large rock fragments, sometimes kilometers across, which can be formed by landslides, impact events, or caldera collapse. Types Breccia is composed of coarse rock fragments held together by cement or a fine-grained matrix. Like conglomerate, breccia contains at least 30 percent of gravel-sized particles (particles over 2mm in size), but it is distinguished from conglomerate because the rock fragments have sharp edges that have not been worn down. These indicate that the gravel was deposited very close to its source area, since otherwise th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventura County Star
The ''Ventura County Star'' (Marked online as VC Star) is a daily newspaper published in Camarillo, California and serves all of Ventura County. It is owned by Gannett, the largest publisher of newspapers in the United States. It is a successor to a number of daily newspapers published around Ventura County during the 20th century. History and ownership The ''Ventura County Star'' was founded in 1925 by the John P. Scripps Newspaper Group, which merged with E. W. Scripps in 1986. Around 1936, the Star acquired the ''Ventura Free Press'' (which itself was founded in 1875), and began publishing as the ''Ventura County Star-Free Press'' in 1938. 1990s Ventura County "Newspaper Wars" E. W. Scripps purchased the ''Camarillo Daily News'' in 1992 from Harris Enterprises.Saillant, Kay Camarillo Daily News to Close in December : Media: The 67-year-old publication will be replaced with a zoned version of the Ventura County Star-Free Press.Los Angeles Times, November 12, 1993 The daily ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaqueros
The ''vaquero'' (; pt, vaqueiro, , ) is a horse-mounted livestock herder of a tradition that has its roots in the Iberian Peninsula and extensively developed in Mexico from a methodology brought to Latin America from Spain. The vaquero became the foundation for the North American cowboy. The ''vaqueros'' of the Americas were the horsemen and cattle herders of New Spain, who first came to California with the Jesuit priest Eusebio Kino in 1687, and later with expeditions in 1769 and the Juan Bautista de Anza expedition in 1774. They were the first cowboys in the region. In Alberta, Northern Mexico, and the Southwestern United States, especially in Texas the remnants of major and distinct ''vaquero'' traditions remain, most popular today as the Californio, Neomexicano, and Tejano traditions. In Central and South America, there are similar, related traditions. The cowboys of the Great Basin still use the term " buckaroo", which may be a corruption of ''vaquero'', to describe thems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Dibblee
Thomas Wilson Dibblee, Jr. (11 October 1911, in Santa Barbara, California – 17 November 2004, in Santa Barbara, California) was an American 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, pe ... geologist best known for his geological mapping. He is also known, together with co-author Mason Hill, for the assertion in 1953 that hundreds of miles of lateral movement had taken place along the San Andreas Fault in California, an idea that was radical at the time, but which has been vindicated by later work and the modern theory of plate tectonics. Dibblee was one of the most prolific field geologists in American history, and over a 60-year career of field mapping, including 25 years with the US Geological Survey, left a legacy of of geologic maps, covering approximately one fourth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chatsworth Formation
The Chatsworth Formation is a Cretaceous period sandstone geologic formation in the Simi Hills and western Santa Susana Mountains of southern California. It is found in western Los Angeles County and eastern Ventura County. The formation's thickness can be more than . Fossils The sedimentary marine formation preserves fossils dating from the Middle Campanian to Early Maestrichtian epochs of the Cretaceous period. It has diverse molluscan faunas. The most common taxa are: by Mary Stecheson, Department of Geological Sciences, California State Univ, Northridge. *ringiculid Biplica *naticids Gyrodes and Euspira *trocid Atira [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic. The name is derived from the Latin ''creta'', "chalk", which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation ''Kreide''. The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now- extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was ice free, and forests extended to the poles. During this time, new groups of mammals and birds appeared. During the Early Cretaceous, flowering plants appeared and began to rapidly diversify, becoming the dominant group of plants across the Earth b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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