Temporal constraints on the timing of high-grade metamorphism in the northern Gawler Craton: implications for assembly of the Australian Proterozoic

The Australo-Antarctic Columbia to Gondwana transition

“…This extension was interrupted by the craton-wide Kimban Orogeny at 1730-1690 Ma, associated with widespread metamorphism, although grade varies (Payne et al, 2008;Howard et al, 2011b), granitic magmatism, and shear zone activity Stewart et al, 2009;Stewart and Betts, 2010a). Overall shortening was approximately E-W in the eastern Gawler Craton .…”

Western Australia-Kalahari (WAlahari) connection in Rodinia: Not supported by U/Pb detrital zircon data from the Maud Belt (East Antarctica) and the Northampton Complex (Western Australia)

“…1550 Ma are not known from Laurentia, while in South Australia the Kararan Orogeny (1570-1540 Ma; e.g. Daly et al, 1998;Hand et al, 2007;Payne et al, 2008) covers this age range. Between ca.…”

“…In the combined Western Australia-Mawson Continent, rocks of this age range can be found in the Albany-Fraser Orogen (the 1700-1630 Ma Dalyup Gneiss; Nelson et al, 1995), the Capricorn Orogen (the 1680-1620 Ma Mangaroon Orogeny; Sheppard et al, 2005), the South Australian Craton (the ca. 1730-1690 Ma Kimban Orogeny; Dutch et al, 2008;Hand et al, 2007;Hoek and Schaefer, 1998;Payne et al, 2008), the Tunkillia Suite (ca. 1690-1670 Ma;Payne et al, 2010) and the Gawler Range Volcanics and Hiltaba Suite (ca.…”

Geology, geophysics, geochemistry of a hidden Palaeoproterozoic ocean-continent transition in the northern Gawler Craton

“…Consequently, the relationships between crustal blocks of the Gawler Craton, and the Coompana and Musgrave provinces has significance in terms of potential mineral endowment, as well as more broadly as these regions are areas of large uncertainty in plate reconstruction models and commonly used to constrain Proterozoic plate reconstructions, both of Australia and globally (e.g. Betts and Giles., 2006;Wade et al, 2007;Swain et al, 2008;Payne, Hand et al, 2008;Aitken, Betts et al, 2016;Betts et al, 2016). However despite the importance, the location and nature of the boundary between the Gawler Craton, and Coompana and Musgrave provinces is unclear (Reid and Hand, 2012).…”

“…the Mirning Sea) that developed outboard of the Gawler and Yilgarn cratons, before being reworked and recycled through multiple magmatic and deformation events (Kirkland et al, 2017). Therefore a compositional boundary must have existed between the isotopically more evolved Gawler Craton to the southeast (Reid and Hand, 2012) and the isotopically more juvenile Musgrave and Coompana provinces to the northwest (Wade et al, 2008;Kirkland et al, 2017).…”