|
List Of Volcanoes In Madagascar ...
This is a list of active and extinct volcanoes in Madagascar. References {{Global Volcanism Program Madagascar Volcanoes 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 ... [...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 plates slide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Coordinates
The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in the EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values for the same location. History The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene, who composed his now-lost ''Geography'' at the Library of Alexandria in the 3rd century ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ankaratra Field
Ankaratra is a cinder cone volcano range located about southwest of Antananarivo, the capital city of Madagascar. It lies between the towns of Arivonimamo to the north, Ambatolampy to the east, Faratsiho to the west and Betafo to the south. It is located in the Central Highlands. The highest peak in Ankaratra is '' Mount Tsiafajavona'' ("never out of the fog"), at 2,644 metres (8,668 ft.) above sea level. Some trace of activity remains in the southernmost part of the range, creating hot springs in the area around Antsirabe. The last eruption of Ankaratra took place in the very recent Quaternary. See also *List of volcanoes in Madagascar This is a list of active and extinct volcanoes in Madagascar. References {{Global Volcanism Program Madagascar Volcanoes A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic a ... References Volcanoes of Madagascar Mountain ranges of Madagascar Antananarivo Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Itasy Volcanic Field
Itasy is a region in central Madagascar. It borders Analamanga region in northeast, Vakinankaratra in south and Bongolava in northwest. The capital of the region is Miarinarivo, and the population was 897,962 in 2018. It is the smallest of all the 22 regions in area with , and is the most densely populated region after Analamanga. Administrative divisions Itasy Region is divided into three districts, which are sub-divided into 51 communes. * Arivonimamo District - 22 communes * Miarinarivo District - 12 communes * Soavinandriana District - 15 communes Infrastructure Airport *Arivonimamo Airbase Roads The National road 1 and National road 43 cross this region. Bodies of water There are 58 rivers in Itasy. 21 rivers are flowing in Miarinarivo District, 17 rivers in Arivonimamo District and 20 in Soavinandriana District. 3500 ha are covered by lakes: 40 lakes in Miarinarivo, 9 lakes in Soavinandriana and 2 in Arivonimamo. Lake Itasy The region of Itasy is named after Lake Itas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nosy-Be
Nosy Be (formerly Nossi-bé and Nosse Be) is an island off the northwest coast of Madagascar. Nosy Be is Madagascar's largest and busiest tourism, tourist resort. It has an area of , and its population was 109,465 according to the provisional results of the 2018 Census. ''Nosy Be'' means "big island" in the Malagasy language. The island was called Assada during the early colonial era of the 17th century. Nosy Be has been given several nicknames over the centuries, including "Nosy Manitra" (the scented island). History The first human inhabitants of Nosy Be were small bands of Antankarana and Zafinofotsy, before the Sakalava people migrated there and became the most numerous ethnic group on the island. These people were joined later by some Comoros, Comorians, Indians or Antandroy. Nosy Be made first major appearance in Madagascar's history when Radama I, King Radama I announced that he intended to conquer the whole west of Madagascar. That plan was eventually achieved in 1837 whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lists Of Volcanoes
These lists cover volcanoes by type and by location. Type * List of extraterrestrial volcanoes * List of largest volcanic eruptions * List of shield volcanoes * List of stratovolcanoes * List of subglacial volcanoes * List of submarine volcanoes * List of volcanoes by elevation Location Africa * List of volcanoes in Algeria * List of volcanoes in Cameroon * List of volcanoes in Cape Verde *List of volcanoes in Chad * List of volcanoes in the Comoros *List of volcanoes in the Democratic Republic of the Congo * List of volcanoes in Djibouti *List of volcanoes in Equatorial Guinea * List of volcanoes in Eritrea *List of volcanoes in Ethiopia *List of volcanoes in Kenya * List of volcanoes in Libya *List of volcanoes in Madagascar *In Nigeria all the volcanoes are in the Biu Plateau *List of volcanoes in Réunion *List of volcanoes in Rwanda *São Tomé and Príncipe has only one volcano, Pico de São Tomé * List of volcanoes in South Africa *List of volcanoes in Sudan *List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Madagascar
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 plates slide pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
