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Doros Complex
Doros Complex is a Igneous differentiation, 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, from which it is separated by sharp contacts. References External linksTime lapse photography of sunrise over the Doros Crater Geography of Kunene Region Geology of Namibia {{Namibia-geo-stub ... [...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 Vipuakuje Muharukua. The region's name comes from the Kunene River which forms the northern border with Angola. Geography Besides the capital Opuwo, the region contains the municipality of Outjo, the town Khorixas, the self-governed village Kamanjab, and hundreds of small settlements like Otjomotjira. Kunene is home to the Himba people, a subtribe of the Herero people, Herero, as well as to Damara people and Nama people. , 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), Namibe Province, and in the far eastern part of its northern edge it borders Cunene (province), Cunene Province. Domestically, it borders the following regions: *Omusati - northeast, west of Oshana *Oshana - northeast, between Omusati and Oshikoto *Oshikoto Region, Oshikoto - northeast, east of Oshikoto *Otjozondjupa - east *E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Namibia
Namibia, officially the Republic of Namibia, is a country on the west coast of Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the northeast, approximating a quadripoint, Zimbabwe lies less than 200 metres (660 feet) away along the Zambezi, Zambezi River near Kazungula, Zambia. Namibia's capital and largest city is Windhoek. Namibia is the driest country in sub-Saharan Africa, and has been inhabited since prehistoric times by the Khoekhoe, Khoi, San people, San, Damara people, Damara and Nama people. Around the 14th century, immigration, immigrating Bantu peoples arrived as part of the Bantu expansion. From 1600 the Ovambo people#History, Ovambo formed kingdoms, such as Ondonga and Oukwanyama. In 1884, the German Empire established rule over most of the territory, forming a colony known as German South West Africa. Between 1904 and 1908, German troops waged a punitive ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damaraland
Damaraland was a name given to the north-central part of South West Africa, which later became Namibia, inhabited by the Damaras. It was bordered roughly by Ovamboland in the north, the Namib Desert in the west, the Kalahari Desert in the east, and the Windhoek region in the south. Administrative history Bantustan In the 1970s the name Damaraland was chosen for a Bantustan, intended by the apartheid-era government to be a self-governing homeland for the Damara people. The Bantustan Damaraland was situated on the western edge of the territory that had been known as Damaraland in the 19th century. Representative authority (1980–1989) Following the Turnhalle Constitutional Conference the system of Bantustans was replaced in 1980 by Representative Authorities which functioned on the basis of ethnicity only and were no longer based on geographically defined areas. The Representative Authority of the Damaras had executive and legislative competencies, being made up of electe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brandberg Mountain
The Brandberg ( Damara: ; ) 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 ( for 'King's Stone'), standing at above and located on the flat gravel plains, on a clear day the Brandberg can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gabbro
Gabbro ( ) is a phaneritic (coarse-grained and magnesium- and iron-rich), mafic intrusive igneous rock formed from the slow cooling 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 d ... [...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 rock, intrusive igneous rock (also called plutonic rock), larger than in area, that forms from c ... [...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, making part of the 75% of sediments or sedimentary rocks covering the earth 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Kunene Region
Geography (from Ancient Greek ; combining 'Earth' and 'write', literally 'Earth writing') is the study of the lands, features, inhabitants, and phenomena of Earth. 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. Geography has been called "a bridge between natural science and social science disciplines." Origins of many of the concepts in geography can be traced to Greek Eratosthenes of Cyrene, who may have coined the term "geographia" (). The first recorded use of the word γεωγραφία was as the title of a book by Greek scholar Claudius Ptolemy (100 – 170 AD). This work created the so-called "Ptolemaic tradition" of geography, which included "Ptolemaic cartographic theory." ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
