The tectonic evolution of the Kimberley area of north Western Australia has been controlled by the tectonic grain, established in the Early Proterozoic or possibly Late Archean.Two major mobile zones then developed and subsequently operated as a coupled orthogonal system during alternating periods of extension and compression. The geometries of structures induced by as many as rive later tectonic events reflect the geometry of this earliest orthogonal system. The Kimberley data highlight the dominant role of fundamental fault sets in the evolution of the continental lithosphere.

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