Central African Shear Zone

The Central African Shear Zone (CASZ) (or Wood Ranger Power Shears shop Wood Ranger Power Shears features Wood Ranger Power Shears order now Wood Ranger Power Shears features sale Shear System) is a wrench fault system extending in an ENE course from the Gulf of Guinea through Cameroon into Sudan. The construction shouldn't be well understood. The shear zone dates to at the least 640 Ma (million years ago). Motion occurred alongside the zone through the break-up of Gondwanaland within the Jurassic and Cretaceous intervals. Among the faults within the zone were rejuvenated greater than as soon as earlier than and in the course of the opening of the South Atlantic within the Cretaceous period. It has been proposed that the Pernambuco fault in Brazil is a continuation of the shear zone to the west. In Cameroon, the CASZ cuts across the Adamawa uplift, a post-Cretaeous formation. The Benue Trough lies to the north, and the Foumban Shear Zone to the south. Volcanic exercise has occurred alongside a lot of the size of the Cameroon line from 130 Ma to the current, and may be associated to re-activation of the CASZ.



The lithosphere beneath the CASZ in this space is thinned in a comparatively narrow belt, with the asthenosphere upwelling from a depth of about 190 km to about a hundred and twenty km. The Mesozoic and Tertiary movements have produced elongated rift basins in central Cameroon, northern Central African Republic and southern Chad. The CASZ was formerly thought to extend eastward only to the Darfur region of western Sudan. It's Wood Ranger Power Shears order now interpreted to extend into central and eastern Sudan, with a complete length of 4,000 km. In the Sudan, the shear zone could have acted as a structural barrier to growth of deep Cretaceous-Tertiary sedimentary basins in the north of the world. Objections to this idea are that the Bahr el Arab and Blue Nile rifts lengthen northwest past one proposed line for the shear zone. However, the alignment of the northwestern ends of the rifts in this areas supports the idea. Ibrahim, Ebinger & Fairhead 1996, pp.



Dorbath et al. 1986, pp. Schlüter & Trauth 2008, pp. Foulger & Jurdy 2007, pp. Plomerova et al. 1993, pp. Bowen & Jux 1987, pp. Bowen, Robert; Jux, Ulrich (1987). Afro-Arabian geology: a kinematic view. Dorbath, C.; Dorbath, L.; Fairhead, J. D.; Stuart, G. W. (1986). "A teleseismic delay time study across the Central African Shear Zone in the Adamawa area of Cameroon, West Africa". Foulger, Gillian R.; Jurdy, Donna M. (2007). Plates, plumes, Wood Ranger Power Shears official site and planetary processes. Geological Society of America. Ibrahim, A. E.; Ebinger, C. J.; Fairhead, J. D. (20 April 1996). "Lithospheric extension northwest of the Central African Shear Zone in Sudan from potential area research". Pankhurst, Robert J. (2008). West Gondwana: pre-Cenozoic correlations across the South Atlantic Region. Plomerova, J; Babuska, V; Dorbath, C.; Dorbath, L.; Lillie, R. J. (1993). "Deep lithospheric construction throughout the Central African Shear Zone in Cameroon". Geophysical Journal International. One hundred fifteen (2): 381-390. Bibcode:1993GeoJI.115..381P. Selley, Richard C. (1997). African basins. Schlüter, Thomas; Trauth, Martin H. (2008). Geological atlas of Africa: with notes on stratigraphy, tectonics, economic geology, geohazards, geosites and geoscientific training of every nation. シュプリンガー・ジャパン株式会社.



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