Pan-African Orogeny
The term 'Pan-African' was coined by WQ Kennedy in 1964 on the basis of an assessment of available Rb-Sr and K-Ar ages in Africa. The Pan-African was inter- preted as a …
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The term 'Pan-African' was coined by WQ Kennedy in 1964 on the basis of an assessment of available Rb-Sr and K-Ar ages in Africa. The Pan-African was inter- preted as a …
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[1] Archean cratons, and the stitching Proterozoic orogenic belts on their flanks, form an integral part of the Southern Africa tectonic landscape. Of these, virtually nothing is known of the position and thickness of the southern boundary of the composite Congo craton and the Neoproterozoic Pan-African orogenic belt due to thick …
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Chapter 6 Late Proterozoic-Early Plaeozoic Pan-African Mobile Belts. Chapter. First Online: 01 January 2005. 1227 Accesses. 1 Citations. Part of the book series: Lecture Notes in Earth Sciences ( (LNEARTH,volume 40)) Download to …
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The surrounding Pan-African mobile belts, characterized by a much thinner mechanical boundary layer and more radioactive crust, were the locus of A-type granitoids, volcanism, tectonic reactivation and basin development during the Phanerozoic. ... 100-150 km beneath the Pan-African belts (Roussel & Lesquer 1991). These estimates correspond …
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develop in the vicinity of the migrating triple junction, where the linear mobile belts intersect. Although it ... 2015] that shows locations of the Pan-African and Brasiliano orogenic belts (RP, Rio de la Plata Craton; SF, São Francisco Craton). Tectonics 10.1002/2015TC003899 LEHMANN ET AL. TECTONIC EVOLUTION NORTHERN …
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within the Pan African mobile belt in between the West African and Congo cratons. The Geology of Nigeria is dominated by crystalline and sedimentary rocks both occurring approximately in equal proportions (Woakes et al 1987). The crystalline rocks are made up of Precambrian basement complex and the Phanerozoic rocks which occur in the eastern
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Unlike the widespread Pan-African ages over the East Antarctica terranes, there are very few Pan African imprints identified in the Eastern Ghats Mobile Belt. …
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Download scientific diagram | (a) Regional geological map of Nigeria within the Pan-African mobile belt between the West African and Congo Cratons and (b) outline geological map of Nigeria showing ...
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Pan-African mobile belts. Despite superficial cover, which obscures deeper tectonic relationships, the Damara Belt appears to link up, in a northeast direction, with the Pan …
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The Pan-African belt of central northwest Africa is part of the Transaharan belt (Cahen et al. 1984) and has been interpreted by Black et al. (1979) and Caby et al. (1981) as a collision belt formed during a Wilson cycle. The Tilemsi suture zone separates the stable West African Craton (passive margin) from the mobile belt (active margin). Pan …
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Pan-African (Upper Proterozoic) plate tectonics of the Arabian-Nubian shield; A. Kröner Pan-African mobile belts as evidence for a transitional tectonic regime from intraplate orogeny to plate margin orogeny; M. Leblanc The late Proterozoic ophiolites of Bou Azzer (Morocco): evidence for Pan-African plate tectonics; H. Martin et al.
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PAN-AFRICAN MOBILE BELTS AS EVIDENCE FOR A TRANSITIONAL TECTONIC REGIME FROM INTRAPLATE OROGENY TO PLATE MARGIN OROGENY @inproceedings{Krner1979PANAFRICANMB, title={PAN-AFRICAN MOBILE BELTS AS EVIDENCE FOR A TRANSITIONAL TECTONIC REGIME FROM INTRAPLATE …
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The term 'Pan-African' was coined by WQ Kennedy in 1964 on the basis of an assessment of available Rb-Sr and K-Ar ages in Africa. The Pan-African was inter- preted as a tectono-thermal event, some 500 Ma ago, during which a number of mobile belts formed, sur- rounding older cratons. The concept was then extended to the Gondwana continents ...
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Abstract: The Pan-African belt in central Africa has benefited from the many petrographic, structural, ... African craton (WAC) and a Pan-African mobile domain (Castaing et al. 1994). This mobile ...
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The Basement Complex is a part of the Pan-African Mobile Belt lying between the West African and Congo Cratons, and south of the Tuareg Shield (Figure 2) (Black, 1980). It is overlain unconformably by Cretaceous and younger sediments. The basement complex was affected by the Pan-African Orogeny (ca. 600 Ma) and occupies the reactivated region ...
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…mobile-belt formation known as the Pan-African episode (about 950 to 550 million years ago), which generated long fold belts, such as the Mozambique belt along the east …
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The Nigeria basement complex is part of the Upper Proterozoic Pan-African mobile belt, located between the West African and Congo Cratons and south of the Tuareg Shield (figure 1).The Pan-African reactivated mobile belt extends from Algiers across southern Sahara into Nigeria, Benin and Cameroon to northeastern Brazil, where …
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pan-african mobile belts as evidence for a transitional tectonic regime from intraplate orogeny to plate margin orogeny @inproceedings{kroner1979panafricanmb, title={pan-african mobile belts as evidence for a transitional tectonic regime from intraplate orogeny to plate margin orogeny}, author={alfred kröner}, year={1979} } a. kröner
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The Nigerian basement complex forms a part of the Pan-African mobile belt and lies between the West African and Congo Cratons (Fig. 1.2) and south of the Tuareg Shield (Black, 1980).
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Pan-African and pre-pan-African history of the Hoggar (Algerian Sahara) in the light of new geochronological data from the Aleksod area. Precam. Res. (1976) ... The Damara mobile belt in the south-western kaokovelt, South West Africa; Y. Hasui et al. The Ribeira folded belt. Rev. Bras. Geociencias (1975)
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argued that the late Proterozoi c/Pan-African granulites in the Eastern Ghats belt north of the Godavari rift, are unlikely to be reworked equivalents of any older granulitic crust, as is the case ...
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The Trans-Sahara belt located in West Africa lies between the West African Craton (WAC) in the west, the Sahara Metacraton, and the Congo craton in the east (Fig. 1). It is a north–south oriented Pan African mobile belt extending over 3000 km long and 500–800 km wide (Cahen et al., 1984, Green, 1993).
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Pan-African mobile belts. Despite superficial cover, which obscures deeper tectonic relationships, the Damara Belt appears to link up, in a northeast direction, with the Pan-African Katangan/Lufilian Arc system of Central Africa. The orogen can be divided into a number of distinct zones on the basis of stratigraphy, structure, metamorphic grade
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The Eastern Ghats Mobile Belt (EGMB) derives its name from the mountain of Eastern Ghats in the east coast of India. Apart from reconnaissance survey by individual geologists (C.S. Middlemiss, T.L. Walker, L.L. Fermor, V. Ball), the Geological Survey of India provided a geological map of the EGMB on 1:50,000 scale in later part of the 20th …
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The evolution of the Nigerian basement, which lies within the Pan-African mobile belt to the east of the West African Craton, is discussed in the light of the new data from some critical areas of the basement. The Nigerian basement can be divided into two provinces: (1) the Western Province, approximately west of latitude 8°E, is characterised ...
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There are five geological domains in Ghana which include (a) the western units found at the eastern margin of the West African Craton, (b) the Precambrian mobile belt units located in the south-eastern parts of Ghana, (c) the Voltaian sediments found in the central parts of Ghana, (d) the coastal sediment basins and (e) the Tertiary to …
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2.6.3 Location of the Pan-African Mobile Belt If the Anti-Atlas represents the northern boundary of the WAC metacratonized dur- ing the Pan-African orogeny, the true Pan-African mobile belt existed just to the north and west, consisting mostly of peri-Gondwanan terranes which drifted away later, during the Phanerozoic. ...
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The Pan-African Mobile Zone. The Pan-African Dahomeyide Belt is located on the southeastern margin of the West-African Craton (Figures 1 and 2). It comprises different lithostructural units in the West (external structural units) or in the East (internal structural units), ...
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Abstract. In Namibia there is a junction between a Pan-African age (650-450 m.y.) orogenic system which follows the western rim of Africa and an ENE-trending arm …
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The basement rocks in Nigeria form part of a zone referred to as the Pan-African mobile belt which includes part of Ghana, Togo, Benin, Nigeria and Cameroun, and stretching northwards through ...
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A large proportion of the African Crust yields Pan-African radiometric ages (650-450 Ma). The Pan-African domains form a network of mobile belts surrounding cratons which …
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The Pan-African orogeny was accompanied by intense metamorphism during which some of the old cratonic margins were remobilised. These Neo-Proterozoic mobile belts include the Tibisti, Trans-Saharan, Anti-Atlas and Mauritanide belts, and the Arabian-Nubian shield ( Figure 2.4 ) . 9
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The surrounding Pan-African mobile belts, characterized by a much thinner mechanical boundary layer and more radioactive crust, were the locus of A-type granitoids, volcanism, tectonic reactivation and basin development during the Phanerozoic. During oceanic closures leading to the assembly of Gondwana, lithosphere behaviour was controlled by ...
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The surrounding Pan-African mobile belts, characterized by a much thinner mechanical boundary layer and more radioactive crust, were the locus of A-type granitoids, …
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A large proportion of the African Crust yields Pan-African radiometric ages (650-450 Ma). The Pan-African domains form a network of mobile belts surrounding cratons which remained relatively stable, … Expand
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DOI: 10.1016/0301-9268(77)90040-7 Corpus ID: 129436875; The intracratonic branch of the Damara Orogen in South West Africa II. Discussion of relationships with the Pan-African mobile belt system☆
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2. Regional geo-structural pattern in Southwestern Nigeria2.1. Basic tectonic units. The study area is part of the Nigerian Basement Complex, which is hosted by the Pan African mobile belt, located within the West African and Congo Craton and south of the Tuareg Shield (Gasquet et al., 2008 (Figure 1 a)).The Nigerian Basement Complex lies …
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The western part of the Pan-African Damara Orogen in Namibia is located at the intersection of two highly oblique mobile belts: the coastal NNW-trending Kaoko-Gariep belts and the inland NE-trending Damara Belt. The Namibfontein-Vergenoeg (NV) domes are two, basement-cored, migmatite domes exposed in this orogenic intersection.
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