info:eu-repo/semantics/article
CRUSTAL EVOLUTION OF THE KAAPVAAL CRATON - TIMING AND NATURE OF TECTONIC EVENTS
CRUSTAL EVOLUTION OF THE KAAPVAAL CRATON - TIMING AND NATURE OF TECTONIC EVENTS
Autor
BARTON JR., J. M.
Institución
Resumen
The component parts of the basement complex of the Kaapvaal Craton of southern Africa formed at different times over a span of 800 Ma starting prior to 3,800 Ma ago. Exactly how each of these parts formed is a matter for speculation but they were brought into their present relative positions by tectonic processes such as diapiric intrusion, thrusting and shearing. As a result, adjacent rock units within the basement complex may have little genetic relationship to one another. Until the sense and magnitude of the displacements accompanying tectonic activity can be evaluated, it is difficult if not impossible to reconstruct the paleoenvironments of crustal formation. The component parts of the basement complex of the Kaapvaal Craton of southern Africa formed at different times over a span of 800 Ma starting prior to 3,800 Ma ago. Exactly how each of these parts formed is a matter for speculation but they were brought into their present relative positions by tectonic processes such as diapiric intrusion, thrusting and shearing. As a result, adjacent rock units within the basement complex may have little genetic relationship to one another. Until the sense and magnitude of the displacements accompanying tectonic activity can be evaluated, it is difficult if not impossible to reconstruct the paleoenvironments of crustal formation.