Stewart, J.Betts, P.Collins, A.Schaefer, B.2010-03-252010-03-252009Journal of Structural Geology, 2009; 31(10):1238-12540191-8141http://hdl.handle.net/2440/56963Copyright © 2009 Elsevier Ltd All rights reserved.Structural mapping of poorly exposed shear zone outcrops is integrated with the analysis of aeromagnetic and Bouguer gravity data to develop a multi-scale kinematic and relative overprinting chronology for the Palaeoproterozoic Tallacootra Shear Zone, Australia. D<inf>2</inf> mylonitic fabrics at outcrop record Kimban-aged (ca. 1730-1690 Ma) N-S shortening and correlate with SZ<inf>1</inf> movements. Overprinting D<inf>3</inf> sinistral shear zones record the partitioning of near-ideal simple shear and initiated Riedel to regional-scale SZ<inf>2</inf> strike-slip on the Tallacootra Shear Zone (SZ<inf>2</inf>). Previously undocumented NE-SW extension led to the emplacement of aplite dykes into the shear zone and can be correlated to the (ca. 1595-1575 Ma) Hiltaba magmatic event. D<inf>4</inf> dextral transpression during the (ca. 1470-1450 Ma) Coorabie Orogeny reactivated the Tallacootra Shear Zone (SZ<inf>2-R4</inf>) exhuming lower crust of the northwestern Fowler Domain within a positive flower structure. This latest shear zone movement is related to a system of west-dipping shear zones that penetrate the crust and sole into a lithospheric detachment indicating wholesale crustal shortening. These methods demonstrate the value of integrating multi-scale structural analyses for the study of shear zones with limited exposure. © 2009 Elsevier Ltd. All rights reserved.enAeromagneticsForward modelingGawler CratonGravityProterozoicShear zoneJournal article002009154910.1016/j.jsg.2009.07.0020002724139000162-s2.0-7035039322738254Collins, A. [0000-0002-3408-5474]