269 pages, Maps, figs, diagrams
Repeatedly through the geological record, the location of rifting during continental break-up has been seen to be controlled by prior orogenic structures; for example the Pan African belts, which mark the 'welds' between the 'building blocks' of Gondwana, also mark some of the scars' along which the South Atlantic has since opened up. Yet how and why reactivation of these compressional structures occurs during later rifting is a process that is both poorly understood and constrained. The Cape Fold Belt provides a unique opportunity in Southern Africa to examine reactivation tectonics along inherited crustal lineaments. During the Lower Palaeozoic inversion of a Pan African mobile belt flanking the southern margin of Africa, a basin was created into which the Cape Supergroup was deposited. Since then, the Cape Fold Belt has demonstrated several periods of re-activation.;The initial phase commenced with Permo-Triassic orogenesis and basin inversion, resulting in a yoked tectonic system, viz. the Cape fold and thurst belt - Karoo foreland basin. Subsequently reactivation occurred yet again, with the negative inversion of the Cape Fold Belt and non-nation of Jurassic Cretaceous limnic basins during the Mesozoic break-up of Gondwana. This book focuses on different aspects of this inversion history at the southern tip of Africa, & gives an insight into the evolution of the Southern Margin of Gondwana. 25 papers, including several in-depth reviews of the various sedimentary basins, provide most up-to-date observations & syntheses of this region.
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