2016
DOI: 10.1016/j.sedgeo.2016.01.011
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Proto-Pacific-margin source for the Ordovician turbidite submarine fan, Lachlan Orogen, southeast Australia: Geochemical constraints

Abstract: The Early Palaeozoic proto-Pacific Pacific margin of Gondwana was characterised by a huge turbidite submarine fan with abundant clastic detritus derived from unknown sources within Gondwana. These deposits are widespread in the Lachlan Orogen of southeast Australia and include the Ordovician Adaminaby Group. Here we show that the mudstones and sandstones of the Adaminaby Group have chemical compositions that indicate the detritus in them was derived from a felsic, continental source similar in composition to P… Show more

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Cited by 10 publications
(9 citation statements)
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“…The Adaminaby Group sample 16AG01 and most Triangle Formation samples (except 16TR14‐16) are dominated by rhyolite/dacite sources. The source is similar to most of the Adaminaby Group sandstones, which were reported by Offler and Fergusson (; Figure b). Samples 16TR14, 15, and 16 fall in the trachyandesite and andesite fields, and sample 16TR15‐1 is in the basalt area, indicating that they have more intermediate and mafic sources, respectively.…”
Section: Whole Rock Major and Trace Element Geochemistrysupporting
confidence: 80%
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“…The Adaminaby Group sample 16AG01 and most Triangle Formation samples (except 16TR14‐16) are dominated by rhyolite/dacite sources. The source is similar to most of the Adaminaby Group sandstones, which were reported by Offler and Fergusson (; Figure b). Samples 16TR14, 15, and 16 fall in the trachyandesite and andesite fields, and sample 16TR15‐1 is in the basalt area, indicating that they have more intermediate and mafic sources, respectively.…”
Section: Whole Rock Major and Trace Element Geochemistrysupporting
confidence: 80%
“…Normalizing values are from Sun and McDonough (). Data sources: Adaminaby Group (Offler & Fergusson, ) and Macquarie Arc (Zhang et al, ).…”
Section: Discussionmentioning
confidence: 99%
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