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Doros Complex
Doros Complex is a differentiated igneous intrusion in the Damaraland region of Namibia. It lies to the northwest of the country's highest peak, Brandberg Mountain. It is regarded as one of the finest and best viewed examples of a differentiated complex in Southern Africa. The gabbroic lopolith intrusion is about 17 km2 in area with a thickness of 500 m.Owen–Smith, T. M., 2015, ''Geology of the Early Cretaceous Doros Layered Mafic Intrusion, Namibia,'' South African Journal of Geology, v. 118 no. 2 p. 185-21abstract/ref> The Doros Complex has intruded sediments of the Karoo Sequence The Karoo Supergroup is the most widespread stratigraphic unit in Africa south of the Kalahari Desert. The supergroup consists of a sequence of units, mostly of nonmarine origin, deposited between the Late Carboniferous and Early Jurassic, a peri ..., from which it is separated by sharp contacts. References External linksTime lapse photography of sunrise over the Doros Crater Geography ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunene Region
Kunene is one of the fourteen regions of Namibia. Its capital is Opuwo, its governor is Marius Sheya. The region's name comes from the Kunene River which forms the northern border with Angola. Besides the capital Opuwo, the region contains the municipality of Outjo, the town Khorixas and the self-governed village Kamanjab. Kunene is home to the Himba people, a subtribe of the Herero. , Kunene had 58,548 registered voters. Kunene's western edge is the shores of the Atlantic Ocean. In the north, it borders Angola's Namibe Province, and in the far eastern part of its northern edge it borders Cunene Province. Domestically, it borders the following regions: *Omusati - northeast, west of Oshana *Oshana - northeast, between Omusati and Oshikoto *Oshikoto - northeast, east of Oshikoto *Otjozondjupa - east *Erongo - south Politics The region comprises seven constituencies: * Epupa * Kamanjab * Khorixas * Opuwo Rural * Opuwo Urban * Outjo * Sesfontein Kunene is one of few regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Namibia
Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and east. Although Kazungula, it does not border Zimbabwe, less than 200 metres (660 feet) of the Botswanan right bank of the Zambezi, Zambezi River separates the two countries. Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence. Its capital and largest city is Windhoek. Namibia is a member state of the United Nations (UN), the Southern African Development Community (SADC), the African Union (AU) and the Commonwealth of Nations. The driest country in sub-Saharan Africa, Namibia has been inhabited since pre-historic times by the San people, San, Damara people, Damara and Nama people. Around the 14th century, immigration, immigrating Bantu peoples arrived as part of the Bantu expansion. Since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igneous Differentiation
In geology, igneous differentiation, or magmatic differentiation, is an umbrella term for the various processes by which magmas undergo bulk chemical change during the partial melting process, cooling, emplacement, or eruption. The sequence of (usually increasingly silicic) magmas produced by igneous differentiation is known as a magma series. Definitions Primary melts When a rock melts to form a liquid, the liquid is known as a ''primary melt''. Primary melts have not undergone any differentiation and represent the starting composition of a magma. In nature, primary melts are rarely seen. Some leucosomes of migmatites are examples of primary melts. Primary melts derived from the mantle are especially important and are known as ''primitive melts'' or primitive magmas. By finding the primitive magma composition of a magma series, it is possible to model the composition of the rock from which a melt was formed, which is important because we have little direct evidence of the Eart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damaraland
Damaraland was a name given to the north-central part of what later became Namibia, inhabited by the Damara (people), Damaras. It was bounded roughly by Ovamboland in the north, the Namib Desert in the west, the Kalahari Desert in the east, and Windhoek in the south. In the 1970s the name Damaraland was revived for a bantustan in South West Africa (present-day Namibia), intended by the apartheid government to be a self-governing homeland for the Damara people. A centrally administered local government was created in 1980. The bantustan Damaraland was situated on the western edge of the territory that had been known as Damaraland in the 19th century. Damaraland, like other homelands in South West Africa, was abolished in May 1989 at the start of the Namibian War of Independence, transition to independence. The name Damaraland predates South African control of Namibia, and was described as "the central portion of German South West Africa" in the Encyclopædia Britannica Eleven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brandberg Mountain
The Brandberg (Damara (people), Damara: Dâures; hz, Omukuruvaro) is Namibia's highest mountain. Location and extent Brandberg Mountain is located in former Damaraland, now Erongo, in the northwestern Namib Desert, near the coast, and covers an area of approximately 650 km2.landsat.usgs.gov With its highest point, the Königstein ''(German language, German for 'King's Stone')'', standing at above sea level and located on the flat Namib gravel plains, on a clear day 'The Brandberg' can be seen from a great distance. There are various routes to the summit, the easiest (also steepest) being up the Ga'aseb river valley, but other routes include the Hungurob and Tsisab river valleys. The nearest settlement is Uis, roughly 30 km from the mountain. The core area of was declared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gabbro
Gabbro () is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is chemically equivalent to rapid-cooling, fine-grained basalt. Much of the Earth's oceanic crust is made of gabbro, formed at mid-ocean ridges. Gabbro is also found as plutons associated with continental volcanism. Due to its variant nature, the term ''gabbro'' may be applied loosely to a wide range of intrusive rocks, many of which are merely "gabbroic". By rough analogy, gabbro is to basalt as granite is to rhyolite. Etymology The term "gabbro" was used in the 1760s to name a set of rock types that were found in the ophiolites of the Apennine Mountains in Italy. It was named after Gabbro, a hamlet near Rosignano Marittimo in Tuscany. Then, in 1809, the German geologist Christian Leopold von Buch used the term more restrictively in his descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopolith
A lopolith is a large igneous intrusion which is lenticular in shape with a depressed central region. Lopoliths are generally concordant with the intruded strata with dike or funnel-shaped feeder bodies below the body. The term was first defined and used by Frank Fitch Grout during the early 1900s in describing the Duluth gabbro complex in northern Minnesota and adjacent Ontario. Lopoliths typically consist of large layered intrusions that range in age from Archean to Eocene. Examples include the Duluth gabbro, the Sudbury igneous complex of Ontario, the Bushveld igneous complex of South Africa, the Great Dyke in Zimbabwe, the Skaergaard complex of Greenland and the Humboldt lopolith of Nevada. The Sudbury occurrence has been attributed to an impact event and associated crustal melting. See also * Laccolith *Phacolith *Batholith A batholith () is a large mass of intrusive igneous rock (also called plutonic rock), larger than in area, that forms from cooled magma deep in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karoo Sequence
The Karoo Supergroup is the most widespread stratigraphic unit in Africa south of the Kalahari Desert. The supergroup consists of a sequence of units, mostly of nonmarine origin, deposited between the Late Carboniferous and Early Jurassic, a period of about 120 million years. In southern Africa, rocks of the Karoo Supergroup cover almost two thirds of the present land surface, including all of Lesotho, almost the whole of Free State, and large parts of the Eastern Cape, Northern Cape, Mpumalanga and KwaZulu-Natal Provinces of South Africa. Karoo supergroup outcrops are also found in Namibia, Eswatini, Zambia, Zimbabwe and Malawi, as well as on other continents that were part of Gondwana. The basins in which it was deposited formed during the formation and breakup of Pangea.McCarthy, T., Rubridge, B. (2005). ''The Story of Earth and Life.'' pp. 161, 187–241. Struik Publishers, Cape Town The type area of the Karoo Supergroup is the Great Karoo in South Africa, where the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Kunene Region
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. One such concept, the first law of geography, proposed by Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." Geography has been called "the world discipline" and "the bridge between the human and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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