GONDWANALAND SIGNIFICANCE OF LOWER PALEOZOIC DEFORMATION IN CENTRAL INDIA AND SW WESTERN-AUSTRALIA

The Stirling Range Formation of Western Australia and the Vindhyan Sup ergroup of central India have undergone two identical Lower Palaeozoic deformation events. Folding related to dextral reactivation of baseme nt structures suggests a possible continuation of the Indian Narmada-S on-Brahmaputra lineament into SW Western Australia. Subsequent open fo lding during NE-SW crustal shortening in both terranes is possibly rel ated to Gondwanaland assembly. Whilst the Shillong Group in NE India a ppears similar to the Stirling Range Formation and Vindhyan Supergroup , further geochronology is required to substantiate a common tectonic history.