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Porvenir Volcano
Porvenir Volcano is an inactive volcano, of stratovolcano type, in Costa Rica. Located in San Carlos canton of Alajuela, 3km from the related Platanar Volcano and part of the Cordillera Central mountain range. It is within the Juan Castro Blanco National Park. Physical aspects Towering 430m over an area of 15 km2, with an eroded crater of around 160 m diameter, it is located in the same line as Poás Volcano, Barva Volcano and Irazú Volcano. The crater border is truncated in the east side by a fault, inside of which there is a small cone of around 20 to 40 meters high, to the south there is another possible cone. Lake Congo is located on its slopes to the west as well as Lake Pozo Verde Lake Pozo Verde ( es, Laguna Pozo Verde, translated as Lake Green Pond), is a lake of volcanic origin in San Carlos, Alajuela province, Costa Rica. Location Lake Pozo Verde is located in the Juan Castro Blanco National Park, on the slopes .... Activity There are no reports of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inactive Volcano
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratovolcano
A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and periodic intervals of explosive eruptions and effusive eruptions, although some have collapsed summit craters called calderas. The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma. Extensive felsic lava flows are uncommon, but have travelled as far as . Stratovolcanoes are sometimes called composite volcanoes because of their composite stratified structure, built up from sequential outpourings of erupted materials. They are among the most common types of volcanoes, in contrast to the less common shield ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costa Rica
Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, the Pacific Ocean to the southwest, and maritime border with Ecuador to the south of Cocos Island. It has a population of around five million in a land area of . An estimated 333,980 people live in the capital and largest city, San José, Costa Rica, San José, with around two million people in the surrounding metropolitan area. The sovereign state is a Unitary state, unitary Presidential system, presidential Constitution of Costa Rica, constitutional republic. It has a long-standing and stable democracy and a highly educated workforce. The country spends roughly 6.9% of its budget (2016) on education, compared to a global average of 4.4%. Its economy, once heavily dependent on agriculture, has diversif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Carlos (canton)
San Carlos is a canton in the Alajuela province of Costa Rica. The capital city of the canton is Ciudad Quesada. History San Carlos was created on 26 September 1911 by decree 17. Geography San Carlos has an area of km² and a mean elevation of metres. The canton encompasses a major portion of the San Carlos Plain, a wide expanse on the Caribbean side of the Cordillera Central (Central Mountain Range). San Carlos reaches north to the border of Nicaragua, east to the province of Heredia, west to the province of Guanacaste, and south into the heights of the Cordillera. San Carlos is noted as the home of Arenal Volcano, one of the most active volcanoes in the world. The canton's principal economic activities include the production of oranges, yuca, pineapple, sugar cane, beef and dairy products. More than 50% of the national dairy production in Costa Rica comes from San Carlos. Districts The canton of San Carlos is subdivided into the following districts: # Quesada # ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alajuela Province
Alajuela () is a province of Costa Rica. It is located in the north-central part of the country, bordering Nicaragua to the north. It also borders the provinces of Heredia to the east, San José to the south, Puntarenas to the southwest and Guanacaste to the west. As of 2011, the province had a population of 885,571. Alajuela is composed of 16 cantons, which are divided into 111 districts. It covers an area of 9,757.53 square kilometers. The provincial capital is Alajuela. Other large cities include Quesada, Aguas Zarcas, Naranjo, Zarcero, Orotina, Sarchí Norte, Upala, San Ramón, Grecia and Los Chiles. Provincial history Pre-Columbia and the arrival of the Spanish Costa Rica has been inhabited for nearly 10,000 years, but little is known of its pre-Columbian history. Alajuela was occupied by several indigenous groups just before the arrival of the Spanish. Despite being between two major civilizations, indigenous groups sparsely populated the area.undefinedIS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platanar Volcano
Platanar Volcano is located in the Cordillera Central mountain range. Part of a complex that covers and is dominated by Porvenir Volcano at . It is located within the Juan Castro Blanco National Park. Physical aspects It has a destroyed crater to the northwest. Prehistoric lava flows on its western flank; one of them, the so-called Florida flow, was perhaps created by Platanar's most recent activity. Cerro Porvenir has a truncated caldera at the summit with a cone inside. Both of these are part of a composed stratovolcano of Upper Pleistocene age that on Platanar's side overlies the remains of Palmera's collapsed caldera, of probable late Pleistocene The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ... age. Platanar has erupted lavas ranging from basalts to andesites in composi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cordillera Central (Costa Rica)
The Cordillera Central is a volcanic mountain range in central Costa Rica which continues from the Continental Divide to east of Cordillera de Tilarán. It extends 80 km from Tapezco Pass to the Turrialba Volcano and ending on the Pacuare River. It is separated from Cordillera de Tilarán by Balsa River and Platanar and Zarcero hills. The Cordillera Central is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America and Antarctica. It contains four large volcanoes Poás (2,708 m), Barva (2,906 m), Irazú and Turrialba (3,340 m). The highest peak is Irazú at 3,432 m. South of the range lie elevated plains of central tectonic depression of Costa Rican Central Valley. Cordillera Central's four main volcanoes are protected as national parks. Volcanic massif of the Poás Volcano is the central feature of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan Castro Blanco National Park
Juan Castro Blanco National Park is a National Park, part of the Arenal Huetar Norte Conservation Area, in the northern part of Costa Rica. Location Located about 100 km north of San José, to the east of Ciudad Quesada in Alajuela Province. Geography It contains the active Platanar Volcano, the dormant Porvenir Volcano, and the inactive El Viejo Volcano. It was created in 1992 and covers an area of both rain and cloud forest. The reserve contains the sources of the Aguas Zarcas, Platanar, Tora, Tres Amigos and La Vieja rivers. Lake Pozo Verde is located within the park. Flora and fauna The park contains a wide variety of orchids and birds as well as natural hot springs. At least 57 species of mammal recorded in the reserve and include jaguar, tapir, ocelots, sloths, howler monkeys, red brocket deer and at least 22 species of bats. Over 233 species of birds, resident and migratory have been recorded including the national bird of Costa Rica th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poás Volcano
The Poás Volcano, ( es, Volcán Poás), is an active stratovolcano in central Costa Rica and is located within Poas Volcano National Park. It has erupted 40 times since 1828, including April 2017 when visitors and residents were evacuated. The volcano and surrounding park were closed for nearly 17 months, with a 2.5 kilometer safety perimeter established around the erupting crater. As of September 1, 2018 the park has reopened with limited access only to the crater observation area and requires a reservation to be made on the National Park Website. Adjacent trails to Lake Botos as well as the museum at the visitor center remained closed. The volcano erupted briefly twice in September 2019. Crater lakes There are two crater lakes near the summit. The northern lake is known as the ''Laguna Caliente'' ("hot lagoon") and is located at a height of 2,300 m in a crater approximately 0.3 km wide and 30 m deep. It is one of the world's most acidic lakes. The acidity va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barva Volcano
Barva Volcano is an andesitic stratovolcano complex in central Costa Rica, 22 km north of San José, in Heredia Province. On the eastern side of the mountain it has a lake in what was the volcanic crater, called "Laguna de Barva", and in the western side it has three hills on the top which are called "Las Tres Marías". It is located in the small agricultural community of Sacramento. Barva has several eruptive centres at its summit and many parasitic cones on its flanks. Its three principal summits visible from the Central Valley give it the common local name of ''Las Tres Marías'' (The Three Marys). Four pyroclastic cones are present within the 2 x 3 km caldera A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber ... at the central and northwestern part of the summit. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irazú Volcano
The Irazú Volcano ( es, Volcán Irazú) is an active volcano in Costa Rica, situated in the Cordillera Central close to the city of Cartago. The name could come from either the combination of "ara" (point) and "tzu" (thunder) or a corruption of ''Iztarú'', which was the name of an indigenous village on the flanks of the volcano. In Costa Rica it is known by the name of "El Coloso" (The Colossus) due to the catastrophes that it has provoked in the past. The volcano's summit has several craters, one of which contains Diego de la Haya, a green crater lake of variable depth. At 11,260 feet (3,432 m), the Irazú Volcano is the highest active volcano in Costa Rica. It is easily visited from San José, with a road leading right up to the summit craters and a weekly bus service to the top. It is thus a popular tourist spot. The summit of the volcano also houses a few television transmitters for television stations in San José. From the top it is possible to see both the Atla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
