Age and significance of voluminous mafic–ultramafic magmatic events in the Murchison Domain, Yilgarn Craton

Ivanic, Tim J.; Wingate, Michael T.D.; Kirkland, Christopher L.; Kranendonk, Martin J. Van; Wyche, Stephen

doi:10.1080/08120099.2010.494765

Cited by 72 publications

(53 citation statements)

References 26 publications

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“…Carbar, Big Bell, Cuddingwarra and Mt Magnet faults) of the same orientation (Spaggiari 2006;Van Kranendonk & Ivanic 2008). This NE to SW band of juvenile crust has been interpreted as a failed continental rift (Ivanic et al 2010). It is unlikely to represent a back-arc rift formed during the docking of the Narryer Terrane, as this amalgamation probably occurred at 2750-2650 Ma, along the Balbalinga Fault (Occhipinti et al 2001), which is later than the inferred age of the rift (c. 3000-2800 Ma).…”

Section: R Mole Et Al 52mentioning

confidence: 83%

“…The majority of the greenstone sequences in this domain occur within this 'rift' zone (i.e. Meekatharra -Wydgee belt ;Spaggiari 2006), and the large layered intrusions of the Murchison Domain (Ivanic et al 2010) occur on its flanks (Figs 10 & 11). The rift may have been formed at c. 2810-2800 Ma during the emplacement of the mafic -ultramafic intrusions (e.g.…”

Section: R Mole Et Al 52mentioning

confidence: 99%

“…The c. 3400 group is very minor and spatially difficult to discriminate from the 3200 Ma (1Nd 23.9 to 22.2) group, which is generally restricted to the margins of the domain. The T DM 2 3000 Ma (1Nd 21.0-1.6) source dominates the central to northern area of the domain and forms a band of relatively juvenile crust (Cue Domain of Cassidy & Champion 2004) previously identified by Cassidy et al (2005), and Ivanic et al (2010Ivanic et al ( , 2012, which is flanked by regional structures (i.e. Carbar, Big Bell, Cuddingwarra and Mt Magnet faults) of the same orientation (Spaggiari 2006;Van Kranendonk & Ivanic 2008).…”

Section: R Mole Et Al 52mentioning

confidence: 99%

“…Only when initial Nd isotopic data plot Table 1. References for multiterrane features and events include Nelson (1995), Kent & McDougall (1995), Kent & Hagemann (1996), , Yeats et al (1996), (Nelson 1997), Krapez et al (2000), Pidgeon & Hallberg (2000), Witt et al (2001), Chen et al (2001a), Chen et al (2003), Van Kranendonk & Ivanic (2008), Ivanic et al (2010), Pawley et al (2012) and Mole (2012). The geological features/processes active at a given time are shown by different colours, where green represents supracrustal activity/formation; pink represents plutonism (mainly granitic); yellow represents gold-forming events (all types, i.e.…”

Section: Interpreting Sm -Nd Datamentioning

confidence: 99%

“…The Yilgarn Craton is one of the largest preserved pieces of Archaean crust on Earth (Cassidy et al 2006;) and records a history of continental crust from c. 4400 Ma (Jack Hills, Illara and Maynard Hills metasediments; Wilde et al 2001;Wyche et al 2004) to 2600 Ma (late, post-tectonic 'cratonizing' granites; Cassidy et al 2002;, and a supracrustal record dating from 3010 to 2650 Ma (Wilde & Pidgeon 1986;Wang et al 1996;Nelson 1997;Wang et al 1998;Witt 1999;Chen et al 2003;Robert et al 2005;Kositcin et al 2008;Ivanic et al 2010). The Yilgarn Craton is also one of the most intensely mineralized crustal terranes on Earth, with multiple gold, iron and nickel camps (Groves 1993;Groves et al 1995;Barley et al 1998Barley et al , 2003Barnes 2006a, b;Angerer & Hagemann 2010;Angerer et al 2012a, b;Fiorentini et al 2012;Duuring & Hagemann 2013a, b).…”

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confidence: 99%

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Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton

Mole

Fiorentini

Cassidy

et al. 2013

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The generation of the Earth's continental crust modified the composition of the mantle and provided a stable, buoyant reservoir capable of capturing mantle material and ultimately preserving ore deposits. Within the continental crust, lithospheric architecture and associated cratonic margins are a first-order control on camp-scale mineralization. Here we show that the evolving crustal architecture of the Archaean Yilgarn Craton, Western Australia, played a key role in controlling the localization of camp-scale gold, iron and nickel mineralized systems. The age and source characteristics of Archaean lithosphere are heterogeneous in both space and time and are recorded by the varying Nd isotopic signature of crustal rocks. Spatial and temporal variations in isotopic character document the evolution of an intra-cratonic architecture through time, and in doing so map transient lithospheric discontinuities where gold, nickel and iron mineral systems were concentrated. Komatiite-hosted nickel deposits cluster into camps localized within young, juvenile crust at the isotopic margin with older lithosphere; orogenic gold systems are typically localized along major structures within juvenile crust; and banded iron formation (BIF)-hosted iron deposits are localized at the edge of, and within, older lithospheric blocks. Furthermore, this work shows that crustal evolution plays an important role in the development and localization of favourable sources of nickel, gold and iron by controlling the occurrence of thick BIFs, ultramafic lavas and fertile (juvenile) crust, respectively. Fundamentally, this study demonstrates that the lithospheric architecture of a craton can be effectively imaged by isotopic techniques and used to identify regions prospective for camp-scale mineralization.

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Section: R Mole Et Al 52mentioning

confidence: 83%

Section: R Mole Et Al 52mentioning

confidence: 99%

Section: R Mole Et Al 52mentioning

confidence: 99%

Section: Interpreting Sm -Nd Datamentioning

confidence: 99%

mentioning

confidence: 99%

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Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton

Mole

Fiorentini

Cassidy

et al. 2013

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Geochronology of Layered Intrusions

Scoates

Wall

2015

Springer Geology

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Layered intrusions crystallize mainly from basaltic magma to form large bodies of igneous rocks that exhibit prominent layering and they preserve stunning rock records of the processes by which magma evolves in crustal magma chambers. These intrusions contain world-class deposits of chromium, platinum group elements (PGE), and vanadium, metals that are vital to industry and society in general. Despite their scientific and practical importance, precise age constraints are lacking for many layered intrusions, and geochronological frameworks linking crystallization and cooling ages for the most part do not exist. This has resulted in critical knowledge gaps related to their origin and formation. This chapter provides an overview of dating methods (U-Th-Pb, 40 Ar/ 39 Ar) and mineral chronometers (e.g., zircon, baddeleyite, rutile, apatite, titanite) potentially present in layered intrusions that is coupled with field, textural, and petrographic criteria for targeting sample selection to allow for the successful implementation of geochronologic studies of layered mafic-ultramafic rocks of any age. As an application, we demonstrate how the thermal history of the Bushveld Complex is documented by mineral ages from samples of the PGE-rich Merensky Reef. High-precision U-Pb zircon ages, involving pretreatment of zircon by the chemical abrasion (annealing and leaching) or CA-TIMS technique, for two samples separated by > 300 km are indistinguishable from each other (2056.88 ± 0.41 Ma, Eastern Limb; 2057.04 ± 0.55 Ma, Western Limb; uncertainty reported as 2s) confirming synchronous crystallization of this horizon at near-solidus conditions across the intrusion. Rapid cooling (~ 125 °C/Ma) down to temperatures of ~ 400-450 °C is defined by U-Pb rutile ages from the same samples (2052( .96 ± 0.61 Ma, 2053.0 ± 2.7 Ma) and a regional hydrothermal event is signaled in 40 Ar/ 39 Ar biotite ages (1999 ± 10 Ma, 2002 ± 10 Ma). The geochronology of layered intrusions, where magma differentiation processes are captured in a wide range of rock textures and structures, represents an essential tool for assessing the evolution of mafic magmatism in the Earth's crust.

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Neoarchean-Mesoproterozoic Mafic Dyke Swarms of the Indian Shield Mapped Using Google Earth™ Images and ArcGIS™, and Links with Large Igneous Provinces

2018

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Age and significance of voluminous mafic–ultramafic magmatic events in the Murchison Domain, Yilgarn Craton

Cited by 72 publications

References 26 publications

Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton

Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton

Geochronology of Layered Intrusions

Neoarchean-Mesoproterozoic Mafic Dyke Swarms of the Indian Shield Mapped Using Google Earth™ Images and ArcGIS™, and Links with Large Igneous Provinces

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