A review of the geology and geodynamic evolution of the Palaeoproterozoic Earaheedy Basin, Western Australia
MetadataShow full item record
The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/503329/description#description. Copyright © 2009 Elsevier B.V. All rights reserved
The Palaeoproterozoic Earaheedy Basin is one of a series of basins that extend for about 700 km east-west and are part of the Capricorn Orogen, situated between the Archaean Pilbara and Yilgarn Cratons. The Earaheedy Basin contains sedimentary rocks that were deposited on the northern passive continental margin of the Yilgarn Craton, probably as a result of continental breakup at 1.8 Ga. The sedimentary rocks of the Earaheedy Group are divided into two Subgroups, Toloo and Miningarra, each representing different depositional environments and aggregating about 3000 m in thickeness. The Tooloo Subgroup consists of basal siliciclastic with minor platform carbonates, overlain by a 600-m-thick succession of Fe-rich rocks (granular iron-formation and hematitic shales). The Miningarra Subgroup is predominantly siliciclastic, but includes stromatolite-bearing carbonate sequences and was deposited during a more active depositional regime. Far field tectonic events at 1.76 and 1.65 Ga resulted in the deformation of the sedimentary package with progressive intensity from north to south, forming the Stanley Fold Belt and giving and overall asymmetric structure to the Basin. These events were followed by a large meteorite impact (Shoemaker Impact Structure), probably in the Neoproterozoic. The Earaheedy Basin is well endowed with Fe resources, represented by the granular iron-formation (Frere Formation, Tooloo Subgroup), particularly in the Stanly Fold Belt, where there was secondary enrichement.
Showing items related by title, author, creator and subject.
Occhipinti, S.; Hocking, R.; Lindsay, M.; Aitken, A.; Copp, I.; Jones, J.; Sheppard, Steve; Pirajno, F.; Metelka, V. (2017)© 2017 A regional tectonic model is presented for the formation and evolution of Paleoproterozoic basins over the northern Yilgarn Craton, integrating new and published regional geological, geochronological, geochemical ...
A new Paleoproterozoic tectonic history of the eastern Capricorn Orogen, Western Australia, revealed by U–Pb zircon dating of micro-tuffsSheppard, Steve; Fletcher, I.; Rasmussen, Birger; Zi, Jianwei; Muhling, Janet; Occhipinti, S.; Wingate, Michael; Johnson, S. (2016)The Earaheedy Basin is one of several Paleoproterozoic siliciclastic basins in the eastern part of the Capricorn Orogen in Western Australia. In the absence of an adequate chronostratigraphic framework, multiple conflicting ...
Dating fluid flow and Mississippi Valley type base-metal mineralization in the Paleoproterozoic Earaheedy Basin, Western AustraliaMuhling, Janet; Fletcher, Ian; Rasmussen, Birger (2012)The ages of deposition and metamorphism of low-grade Precambrian metasedimentary sequences canbe difficult to define in the absence of interlayered volcanogenic rocks. Monazite and xenotime can growat temperatures below ...