Comparing 1800–1600Ma accretionary and basin processes in Australia and Laurentia: Possible geographic connections in Columbia

Betts, Peter Graham; Giles, David; Schaefer, Bruce F.

doi:10.1016/j.precamres.2007.03.007

Cited by 133 publications

(79 citation statements)

References 108 publications

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“…The complex geological evolution of the eastern Australian margin during this time likely reflects the interaction of two convergent margins (Figs. 3-4), one facing an external ocean along the southern margin of the Columbia supercontinent and the second to the east of the continent associated with the closure of a relatively small ocean separating Australia and Laurentia Betts et al, 2008).…”

Section: The Eastern Australian Marginmentioning

confidence: 99%

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The Australo-Antarctic Columbia to Gondwana transition

et al. 2016

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Section: The Eastern Australian Marginmentioning

confidence: 99%

“…This stage in Australia's evolution has been the topic of several syntheses Betts et al, 2008;Cawood and Korsch, 2008;Payne et al, 2009). Although a paucity of understanding remains, it is clear that Australia preserves extension, episodic orogenesis and crustal reworking at the edge(s) of Columbia .…”

Section: Stage 1 -Columbia Margin Activity (~1740 To~1600 Ma)mentioning

confidence: 99%

The Australo-Antarctic Columbia to Gondwana transition

et al. 2016

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“…If this belt does reflect juxtaposition of Laurentia and the Mawson Continent at 1730-1720 Ma (e.g. Betts et al 2008;Payne et al 2009;Boger 2011), then this means a relatively late assembly for this part of Nuna. Another possibility is that c. 1.7 Ga metamorphism in the Miller Range (and, perhaps, the Shackleton Range) is unrelated to Kimban events in South Australia, and is, instead, linked to events at the active margin of Laurentia that should have extended into the Mawson Continent somewhere close to the Miller Range according to the correlations of Goodge et al (2008).…”

Section: Antarctica and Supercontinent Evolutionmentioning

confidence: 99%

Antarctica and supercontinent evolution: historical perspectives, recent advances and unresolved issues

Harley

Fitzsimons

Zhao

2013

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The Antarctic rock record spans some 3.5 billion years of history, and has made important contributions to our understanding of how Earth's continents assemble and disperse through time. Correlations between Antarctica and other southern continents were critical to the concept of Gondwana, the Palaeozoic supercontinent used to support early arguments for continental drift, while evidence for Proterozoic connections between Antarctica and North America led to the 'SWEAT' configuration (linking SW USA to East Antarctica) for an early Neoproterozoic supercontinent known as Rodinia. Antarctica also contains relicts of an older Palaeo-to Mesoproterozoic supercontinent known as Nuna, along with several Archaean fragments that belonged to one or more 'supercratons' in Neoarchaean times. It thus seems likely that Antarctica contains remnants of most, if not all, of Earth's supercontinents, and Antarctic research continues to provide insights into their palaeogeography and geological evolution. One area of research is the latest Neoproterozoic-Mesozoic active margin of Gondwana, preserved in Antarctica as the Ross Orogen and a number of outboard terranes that now form West Antarctica. Major episodes of magmatism, deformation and metamorphism along this palaeo-Pacific margin at 590 -500 and 300-230 Ma can be linked to reduced convergence along the internal collisional orogens that formed Gondwana and Pangaea, respectively; indicating that accretionary systems are sensitive to changes in the global plate tectonic budget. Other research has focused on Grenville-age (c. 1.0 Ga) and PanAfrican (c. 0.5 Ga) metamorphism in the East Antarctic Craton. These global-scale events record the amalgamation of Rodinia and Gondwana, respectively. Three coastal segments of Grenville-age metamorphism in the Indian Ocean sector of Antarctica are each linked to the c. 1.0 Ga collision between older cratons but are separated by two regions of pervasive Pan-African metamorphism ascribed to Neoproterozoic ocean closure. The tectonic setting of these events is poorly constrained given the sparse exposure, deep erosion level and likelihood that younger metamorphic events have reactivated older structures. The projection of these orogens under the ice is also controversial, but it is likely that at least one of the Pan-African orogens links up with the Shackleton Range on the palaeo-Pacific margin of the craton. Sedimentary detritus and glacial erratics at the edge of the ice sheet provide evidence for the c.

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“…A number of reconstruction models have been proposed that link the northern Gawler Craton and the Aileron Province of the North Australian Craton during the Paleoproterozoic (Dawson et al 2002;Betts & Giles 2006;Betts et al 2008;Payne et al 2009). In light of the new age data from the northern Gawler Craton, similarities in event timelines with the Aileron Province of the North Australian Craton (Figure 13) including magmatism, sediment deposition and metamorphism can now be evaluated.…”

Section: Similarities To Aileron Region Of North Australian Cratonmentioning

confidence: 99%

U–Pb zircon, zircon Hf and whole-rock Sm–Nd isotopic constraints on the evolution of Paleoproterozoic rocks in the northern Gawler Craton

Howard

Hand

Barovich

et al. 2011

Australian Journal of Earth Sciences

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Comparing 1800–1600Ma accretionary and basin processes in Australia and Laurentia: Possible geographic connections in Columbia

Cited by 133 publications

References 108 publications

The Australo-Antarctic Columbia to Gondwana transition

The Australo-Antarctic Columbia to Gondwana transition

Antarctica and supercontinent evolution: historical perspectives, recent advances and unresolved issues

U–Pb zircon, zircon Hf and whole-rock Sm–Nd isotopic constraints on the evolution of Paleoproterozoic rocks in the northern Gawler Craton

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