Journal article

Structural geometry and controls on basement-involved deformation in the northern Flinders Ranges, Adelaide Fold Belt, South Australia

E Paul, T Flottmann, M Sandiford

AUSTRALIAN JOURNAL OF EARTH SCIENCES | BLACKWELL SCIENCE ASIA | Published : 1999

Abstract

In the northern Flinders Ranges, Neoproterozoic and Cambrian sedimentary rocks were deformed and variably metamorphosed during the ca 500 Ma Cambro-Ordovician Delamerian Orogeny. Balanced and restored structural sections across the northern Flinders Ranges show shortening of about 10-20%. Despite the presence of suitable evaporitic detachment horizons at the basement-cover interface, the structural style is best interpreted to be thick-skinned involving basement with only a minor proportion of the overall shortening accommodated along stratigraphically controlled detachments. Much of the contractional deformation was localised by the inversion of former extensional faults such as the Norwest..

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