From rift to drift in the Paleoproterozoic sequences of Mount Isa, Northern Australia and its implications for reconstructions of Rodinia  

Authors / CoAuthors

Gibson, G.M. | Neumann, N.L. | Southgate, P.N. | Hutton, L.J.

Abstract

Paleoproterozoic-earliest Mesoproterozoic sequences in the Mount Isa region of northern Australia preserve a 200 Myr record of intracontinental rifting and consequent passive margin formation. Passive margin formation followed a switch in the extensional direction from ENE-WSW to NE-SW ca. 1740 Ma, and was accompanied by extensional unroofing of 1670 Ma magmatic rocks from mid-crustal depths. The resulting asymmetries in basin geometry and crustal architecture represent a first-order constraint on reconstructions of Rodinia that juxtapose Proterozoic eastern Australia against rocks of comparable age in western Laurentia.

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nonGeographicDataset

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64202

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• External PublicationArticle

( Theme )

• structural geology

( Theme )

• sequence stratigraphy

• AU-QLD

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_Internal

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2006-01-01T00:00:00

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Australian Government Security ClassificationSystem    

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Creative Commons Attribution 4.0 International Licence    

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