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Sag Pond
A sag pond is a body of fresh water collected in the lowest parts of a depression (geology), depression formed between two sides of an active geologic fault, strike-slip, transtensional or normal fault zone. Formation A sag pond is formed along a strike-slip fault, which may create a topography, depression in the earth. When water enters the depression from rivers, streams, rainfall or snowfall, it fills the low-lying area, and a pond is the result. Scientific significance Sag pond formation is common in California, and many of them can be found on the San Andreas Fault, which runs through the western part of the state. Aerial photography or high-resolution topography can easily determine their locations. Uses Sag ponds have been converted into stock reservoirs. Larger sag ponds are converted into reservoirs for public water sources, such as San Andreas Lake Examples Sag ponds of various sizes can be found along the San Andreas Fault, most notably within the Carrizo Plain and S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elizabeth Lake-kmf
Elizabeth or Elisabeth may refer to: People * Elizabeth (given name), a female given name (including people with that name) * Elizabeth (biblical figure), mother of John the Baptist Ships * HMS ''Elizabeth'', several ships * ''Elisabeth'' (schooner), several ships * ''Elizabeth'' (freighter), an American freighter that was wrecked off New York harbor in 1850; see Places Australia * City of Elizabeth ** Elizabeth, South Australia * Elizabeth Reef, a coral reef in the Tasman Sea United States * Elizabeth, Arkansas * Elizabeth, Colorado * Elizabeth, Georgia * Elizabeth, Illinois * Elizabeth, Indiana * Hopkinsville, Kentucky, originally known as Elizabeth * Elizabeth, Louisiana * Elizabeth Islands, Massachusetts * Elizabeth, Minnesota * Elizabeth, New Jersey, largest city with the name in the U.S. * Elizabeth City, North Carolina * Elizabeth (Charlotte neighborhood), North Carolina * Elizabeth, Pennsylvania * Elizabeth Township, Pennsylvania (other) * Elizabeth, West Vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Pelona Mountains
The Sierra Pelona, also known as the Sierra Pelona Ridge or the Sierra Pelona Mountains, is a mountain ridge in the Transverse Ranges in Southern California. Located in northwest Los Angeles County, the ridge is bordered on the north by the San Andreas fault and lies within and is surrounded by the Angeles National Forest. Geography The Sierra Pelona Mountains lie northwest of the San Gabriel Mountains, which are divided by the wide Soledad Canyon formation. The mountains are flanked to the south by the Santa Clarita Valley and separated from the Antelope Valley and the Mojave Desert to the north by the San Andreas Fault. Toward the southeast lie Vasquez Rocks, thrust up by the fault. The Tejon Pass separates the Sierra Pelonas, the San Emigdios and the Tehachapis near Gorman and Lebec. Within the Sierra Pelonas lie the rural areas of Neenach, Three Points, Lake Hughes, Elizabeth Lake, Acton, Agua Dulce and Green Valley. The cities of Santa Clarita, Palmdale, and Lanca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depressions (geology)
Depression may refer to: Mental health * Depression (mood), a state of low mood and aversion to activity * Mood disorders characterized by depression are commonly referred to as simply ''depression'', including: ** Dysthymia, also known as persistent depressive disorder ** Major depressive disorder, also known as clinical depression Economics * Economic depression, a sustained, long-term downturn in economic activity in one or more economies ** Great Depression, a severe economic depression during the 1930s, commonly referred to as simply ''the Depression'' ** Long Depression, an economic depression during 1873–96, known at the time as the ''Great Depression'' Biology * Depression (kinesiology), an anatomical term of motion, refers to downward movement, the opposite of elevation * Depression (physiology), a reduction in a biological variable or the function of an organ * Central nervous system depression, physiological depression of the central nervous system that can resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graben
In geology, a graben () is a depressed block of the crust of a planet or moon, bordered by parallel normal faults. Etymology ''Graben'' is a loan word from German, meaning 'ditch' or 'trench'. The word was first used in the geologic context by Eduard Suess in 1883. The plural form is either ''graben'' or ''grabens''. Formation A graben is a valley with a distinct escarpment on each side caused by the displacement of a block of land downward. Graben often occur side by side with horsts. Horst and graben structures indicate tensional forces and crustal stretching. Graben are produced from parallel normal faults, where the displacement of the hanging wall is downward, while that of the footwall is upward. The faults typically dip toward the center of the graben from both sides. Horsts are parallel blocks that remain between graben; the bounding faults of a horst typically dip away from the center line of the horst. Single or multiple graben can produce a rift valley. Half-g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azores
) , motto =( en, "Rather die free than subjected in peace") , anthem= ( en, "Anthem of the Azores") , image_map=Locator_map_of_Azores_in_EU.svg , map_alt=Location of the Azores within the European Union , map_caption=Location of the Azores within the European Union , subdivision_type=Sovereign state , subdivision_name=Portugal , established_title=Settlement , established_date=1432 , established_title3=Autonomous status , established_date3=30 April 1976 , official_languages=Portuguese , demonym= ( en, Azorean) , capital_type= Capitals , capital = Ponta Delgada (executive) Angra do Heroísmo (judicial) Horta (legislative) , largest_city = Ponta Delgada , government_type=Autonomous Region , leader_title1=Representative of the Republic , leader_name1=Pedro Manuel dos Reis Alves Catarino , leader_title2= President of the Legislative Assembly , leader_name2= Luís Garcia , leader_title3= President of the Regional Government , leader_name3=José Manuel Bolieiro , le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pico Island
Pico Island (''Ilha do Pico,'' ) is an island in the Central Group of the Portuguese Azores. The landscape features an eponymous volcano, Ponta do Pico, which is the highest mountain in Portugal, the Azores, and the highest elevation of the Mid-Atlantic Ridge. In the tradition of the Portuguese poet, Raul Brandão, Pico is referred to as the ''Ilha Preta'' ("Black Island"), for its black volcanic soils, which nourish its UNESCO-designated vineyards that once allowed the development of the island's economy. Pico is the second largest and, geologically speaking, the most recently formed island of the Azores, being around 300,000 years old. History The exact date of the island's discovery is not known. However, in the 1375 Catalan Atlas, Pico is depicted along several other islands of the Azores, where it is labelled as ''li colunbj''. In Cristoforo Soligo's map from 1475, Pico is described both as Dom Diniz (or São Diniz) island and as ''Insula Columbi''. Although the Azor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Achada Plateau
The Achada Plateau (Portuguese: ) is an extensive volcanic mountain range located on Pico Island, Azores. It is a protected area with many valuable features that characterize the Azorean landscape. It is included in two Natura 2000 sites, one of which is classified as an Important Bird Area. Part of the plateau also includes a ramsar wetland. It is one of the three main geomorphological units that comprise Pico Island. Location and geomorphology The Achada Plateau is located on the highlands of Pico, the highest and second largest island on the archipelago of the Azores. The extensive volcanic mountain range, located in the eastern half of the island at a mean altitude of , stretches from Lagoa do Capitão (northeast of Mount Pico) to the easternmost part of the island. It is characterized by the steep slopes that limit it to the south and north and by the presence in the axial zone of the range of various volcano-tectonic alignments of cinder and spatter cones and eruptive fiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Bruno, California
San Bruno (Spanish for " St. Bruno") is a city in San Mateo County, California, United States, incorporated in 1914. The population was 43,908 at the 2020 United States Census. The city is between South San Francisco and Millbrae, adjacent to San Francisco International Airport and Golden Gate National Cemetery; it is approximately south of Downtown San Francisco. Geography The city is located between South San Francisco and Millbrae, adjacent to San Francisco International Airport to the east and Golden Gate National Cemetery to the northwest. It is approximately south of Downtown San Francisco. According to the United States Census Bureau, the city has a total area of , all of it land. The city spreads from the mostly flat lowlands near San Francisco Bay into the foothills of the Santa Cruz Mountains, which rise to more than above sea level in Crestmoor and more than above sea level in Portola Highlands. San Bruno City Hall sits at an official elevation of 41 feet (12. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Andreas Reservoir
San Andreas Lake is a reservoir adjacent to the San Francisco Peninsula cities of Millbrae and San Bruno in San Mateo County, California. It is situated directly on the San Andreas Fault, which is named after the valley it is in. History After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolá expedition descended what Portolà called the ''Cañada de San Francisco'', now San Andreas Creek, to camp in the vicinity of today's San Andreas Lake. The next day they reached a "Laguna Grande" which today is covered by the Upper Crystal Springs Reservoir. The campsite is marked by California Historical Marker No. 94 "Portola Expedition Camp", located at Crystal Springs Dam, on Skyline Boulevard, 0.1 mi south of Crystal Springs Road. They camped here a second time on November 12, on their return trip. Padre Palóu, on an expedition from Monterey to explore the western side of San Francisco Bay led by Captain Fernando Rivera y Moncada, renamed Por ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrizo Plain
The Carrizo Plain ( Obispeño: ''tšɨłkukunɨtš'', "Place of the rabbits") is a large enclosed grassland plain, approximately long and up to across, in southeastern San Luis Obispo County, California, about northwest of Los Angeles. It contains the Carrizo Plain National Monument, and it is the largest single native grassland remaining in California. It includes Painted Rock in the Carrizo Plain Rock Art Discontiguous District, which is listed on the National Register of Historic Places. In 2012 it was further designated a National Historic Landmark due to its archeological value. The San Andreas Fault occurs along the eastern edge of the Carrizo Plain at the western base of the Temblor Range. Geography and geology The Carrizo Plain extends northwest from the town of Maricopa, following the San Andreas Fault. Bordering the plain to the northeast is the Temblor Range, on the other side of which is California's Central Valley. Bordering the plain to the southwest is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depression (geology)
In geology, a depression is a landform sunken or depressed below the surrounding area. Depressions form by various mechanisms. Types Erosion-related: * Blowout: a depression created by wind erosion typically in either a partially vegetated sand dune ecosystem or dry soils (such as a post-glacial loess environment). * Glacial valley: a depression carved by erosion by a glacier. * River valley: a depression carved by fluvial erosion by a river. * Area of subsidence caused by the collapse of an underlying structure, such as sinkholes in karst terrain. * Sink: an endorheic depression generally containing a persistent or intermittent (seasonal) lake, a salt flat (playa) or dry lake, or an ephemeral lake. * Panhole: a shallow depression or basin eroded into flat or gently sloping, cohesive rock.Twidale, C.R., and Bourne, J.A., 2018Rock basins (gnammas) revisited.''Géomorphologie: Relief, Processus, Environnement,'' Vol. 24, No. 2. January 2018. Retrieved 9 June 2020. Coll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Andreas Lake
San Andreas Lake is a reservoir adjacent to the San Francisco Peninsula cities of Millbrae and San Bruno in San Mateo County, California. It is situated directly on the San Andreas Fault, which is named after the valley it is in. History After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolá expedition descended what Portolà called the ''Cañada de San Francisco'', now San Andreas Creek, to camp in the vicinity of today's San Andreas Lake. The next day they reached a "Laguna Grande" which today is covered by the Upper Crystal Springs Reservoir. The campsite is marked by California Historical Marker No. 94 "Portola Expedition Camp", located at Crystal Springs Dam, on Skyline Boulevard, 0.1 mi south of Crystal Springs Road. They camped here a second time on November 12, on their return trip. Padre Palóu, on an expedition from Monterey to explore the western side of San Francisco Bay led by Captain Fernando Rivera y Moncada, renamed Por ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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