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Central African Shear Zone

2025-09-10T07:14:54Z

ShelbyDurbin1:

The Central African Shear Zone (CASZ) (or Shear System) is a wrench fault system extending in an ENE route from the Gulf of Guinea by Cameroon into Sudan. The structure shouldn't be well understood. The shear zone dates to at the least 640 Ma (million years in the past). Motion occurred alongside the zone in the course of the break-up of Gondwanaland within the Jurassic and Cretaceous periods. A number of the faults in the zone had been rejuvenated more than once earlier than and during the opening of the South Atlantic in 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 along a lot of the size of the Cameroon line from 130 Ma to the present, and could also be related to re-activation of the CASZ. The lithosphere beneath the CASZ on this space is thinned in a comparatively slender 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 now interpreted to extend into central and jap Sudan, with a complete length of 4,000 km. Within the Sudan, the shear zone might have acted as a structural barrier to development of deep Cretaceous-Tertiary sedimentary basins within the north of the world. Objections to this theory are that the Bahr el Arab and Blue Nile rifts prolong northwest beyond one proposed line for the shear zone. However, the alignment of the northwestern ends of the rifts on this areas helps the theory. 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 throughout the Central African Shear Zone in the Adamawa region of Cameroon, West Africa". Foulger, Gillian R.; Jurdy, Donna M. (2007). Plates, plumes, and [https://test.cuber.co.kr/onyeol/bbs/board.php?bo_table=free&wr_id=188624 Wood Ranger Power Shears features] 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 field studies". Pankhurst, Robert J. (2008). West Gondwana: [http://kimtec.co.kr/bbs/board.php?bo_table=free&wr_id=1490090 Wood Ranger Power Shears features] pre-Cenozoic correlations across the South Atlantic Region. Plomerova, J; Babuska, V; Dorbath, C.; Dorbath, L.; Lillie, R. J. (1993). "Deep lithospheric construction across the Central African Shear Zone in Cameroon". Geophysical Journal International. A hundred and 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, financial geology, geohazards, geosites and geoscientific education of every country. シュプリンガー・ジャパン株式会社. Viscosity is a measure of a fluid's rate-dependent resistance to a change in shape or to motion of its neighboring parts relative to one another. For liquids, it corresponds to the informal idea of thickness; for instance, syrup has a better viscosity than water. Viscosity is outlined scientifically as a drive multiplied by a time divided by an area. Thus its SI units are newton-seconds per metre squared, or pascal-seconds. Viscosity quantifies the internal frictional drive between adjoining layers of fluid that are in relative movement. As an illustration, when a viscous fluid is compelled by a tube, it flows more quickly close to the tube's center line than near its partitions. Experiments present that some stress (akin to a pressure distinction between the 2 ends of the tube) is required to maintain the movement. It is because a drive is required to beat the friction between the layers of the fluid that are in relative motion. For [http://xn--4k0b522dkqf.com/bbs/board.php?bo_table=free&wr_id=499831 Wood Ranger Power Shears features] a tube with a continuing charge of movement, the energy of the compensating pressure is proportional to the fluid's viscosity. Typically, viscosity relies on a fluid's state, comparable to its temperature, pressure, and charge of deformation. However, the dependence on some of these properties is negligible in sure cases. For instance, the viscosity of a Newtonian fluid does not differ considerably with the rate of deformation. Zero viscosity (no resistance to shear stress) is observed only at very low temperatures in superfluids; otherwise, the second law of thermodynamics requires all fluids to have optimistic viscosity. A fluid that has zero viscosity (non-viscous) is named splendid or [https://myhomemypleasure.co.uk/wiki/index.php?title=Comment_Fonctionne_ChatGPT Wood Ranger Power Shears features] inviscid. For [https://bbarlock.com/index.php/10_Best_Sewing_Scissors:_What_You_Need_To_Remain_Sharp_In_2025 Wood Ranger Power Shears features] non-Newtonian fluids' viscosity, there are pseudoplastic, plastic, and dilatant flows which are time-impartial, [https://healthwiz.co.uk/index.php?title=Can_You_Name_All_Of_Those_Sewing_Terms Wood Ranger Power Shears features] and [https://cameradb.review/wiki/User:CalebLorenz4 Wood Ranger Power Shears for sale] [https://g.ovlg.com/ewanallcot706/7999643/wiki/Whatever+the+Brand+You+Choose Wood Ranger Power Shears USA] [http://www.mariejegouic-psycho-kinesiologie.com/question/best-sewing-scissors-of-2025/ electric power shears] [http://internationalcollegeincalifornia.com/content/discover-precision-cutting-top-quality-fabric-scissors-0 Wood Ranger Power Shears website] [http://gyeongshin.co.kr/kscn/bbs/board.php?bo_table=free&wr_id=708040 Wood Ranger Power Shears website] there are thixotropic and rheopectic flows that are time-dependent. The phrase "viscosity" is derived from the Latin viscum ("mistletoe"). Viscum also referred to a viscous glue derived from mistletoe berries. In supplies science and engineering, there is commonly interest in understanding the forces or stresses concerned in the deformation of a material.

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2025-09-10T00:43:39Z

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