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首页> 外文期刊>South African journal of geology >Macro- and mesoscale features of the Potgieterspoort Thrust, Kango Group
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Macro- and mesoscale features of the Potgieterspoort Thrust, Kango Group

机译：Kango集团Potgieterspoort推力的宏观和中尺度特征

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摘要

A large thrust fault in the Kango Group discovered during 1975, was traced to the westernmost part of the inlier during the present investigation. This indicates an east - west extension of the thrust sheet for a distance of at least 64 km. Although the contact with the underlying strata is almost without exception knife sharp, several small-scale associated features indicate northward movement along the thrust. It appears that initial faulting occurred after the formation of the first pre-Cape (S_1) cleavage while the sediments were still water-laden. These fluids may have provided the hydrostatic pressure required to sustain large-scale thrusting without the formation of significant breccia, gouge, or mylonite. Later movement along the fault appears to have occurred during the second pre-Cape (F_2 - S_2) phase of deformation, whereas folding of the thrust plane may have taken place during the Cape orogeny (F_3 - S_3).
机译：在1975年发现的Kango小组中有一个大的逆冲断层，在本次调查中被追踪到该岩心的最西端。这表示推力板的东西向延伸至少64 km。尽管与下伏地层的接触几乎无一例外都是锋利的，但一些小范围的相关特征表明它沿着推力向北运动。似乎最初的断层发生在第一次海角前（S_1）分裂形成之后，而沉积物仍充满水。这些流体可能已经提供了维持大规模推力所需的静水压力，而不会形成明显的角砾岩，凿凿或my石。沿断层的后来运动似乎发生在海角前第二变形阶段（F_2-S_2），而在海角造山运动（F_3-S_3）期间可能发生了逆冲推力平面的折叠。

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