Geochemistry of coexisting depleted and enriched Paringa Basalts, in the 2.7Ga Kalgoorlie Terrane, Yilgarn Craton, Western Australia: Evidence for a heterogeneous mantle plume event

Said, Nuru; Kerrich, Robert

doi:10.1016/j.precamres.2009.08.002

Cited by 82 publications

(18 citation statements)

References 122 publications

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“…FPM = Fertile Primitive Mantle. metals and PGE signatures of the enriched Paringa basalt are interpreted as recycling of older continental crust into mantle source as discussed by Said and Kerrich (2009).…”

Section: Major Element Trendsmentioning

confidence: 98%

“…In the Upper Unit, the Paringa Basalt has two compositional varieties: the depleted Paringa tholeiitic basalt having depletion of LREE, and the enriched Paringa basalt that extends to MgO 18 wt.% and relatively high concentrations of incompatible elements. Said and Kerrich (2009) demonstrated from Nd-isotope and trace element systematics that the enriched Paringa represented ancient continental crust recycled into the source of the Kambalda plume. These abbreviations are used in legends to Fig.…”

Section: Regional Geologymentioning

confidence: 99%

“…Swager (1997) and Krapez (2006). The Paringa Basalt has been divided, based on composition, into a depleted suite (D) and enriched (E) counterpart (Said and Kerrich, 2009). (Fig.…”

Section: Regional Geologymentioning

confidence: 99%

“…In the legend, basalt is abbreviated B, komatiitic-basalt KB and Formation FM. The Paringa Basalt has been divided, based on composition, into a depleted suite (D) and enriched (E) counterpart (Said and Kerrich, 2009) [Fig. 2].…”

Section: Regional Geologymentioning

confidence: 99%

“…The dissolved NiS analyte is mixed thoroughly before analysis of Ru, Rh, Pd, Os, Ir, Pt and Au by ICP-MS. Major element oxides were determined, together with other select trace elements including Cu, Rb, Sr and Ba, by XRF (detection limit 1 ppm for trace elements), on pressed pellets, at the Geoscience Australia laboratories, following methods similar to those described by Norrish and Chappell (1977), whereas all other trace elements, including REE and high field strength elements (HFSE: Th, Nb, Ta, Zr, Hf) were determined by ICP-MS. The analytical protocols are given in Said and Kerrich (2009).…”

Section: Abundances Of the Platinum-group Elements (Pge) Andmentioning

confidence: 99%

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Behaviour of Ni–PGE–Au–Cu in mafic–ultramafic volcanic suites of the 2.7Ga Kambalda Sequence, Kalgoorlie Terrane, Yilgarn Craton

Said

Kerrich

Maier

et al. 2011

Geochimica et Cosmochimica Acta

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Section: Major Element Trendsmentioning

confidence: 98%

Section: Regional Geologymentioning

confidence: 99%

“…Swager (1997) and Krapez (2006). The Paringa Basalt has been divided, based on composition, into a depleted suite (D) and enriched (E) counterpart (Said and Kerrich, 2009). (Fig.…”

Section: Regional Geologymentioning

confidence: 99%

Section: Regional Geologymentioning

confidence: 99%

Section: Abundances Of the Platinum-group Elements (Pge) Andmentioning

confidence: 99%

See 3 more Smart Citations

Behaviour of Ni–PGE–Au–Cu in mafic–ultramafic volcanic suites of the 2.7Ga Kambalda Sequence, Kalgoorlie Terrane, Yilgarn Craton

Said

Kerrich

Maier

et al. 2011

Geochimica et Cosmochimica Acta

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Insights Into Layering in the Cratonic Lithosphere Beneath Western Australia

Sun

Saygin

et al. 2018

JGR Solid Earth

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The characteristics of internal lithospheric discontinuities carry crucial information regarding the origin and evolution of the lithosphere. However, the formation and mechanisms of the midlithosphere discontinuity (MLD) are still enigmatic and controversial. We investigate the midlithospheric discontinuities beneath the Archean Western Australian Craton, which represents one of the oldest continents on the globe, using a novel receiver‐based reflectivity approach combined with other geophysical information comprising tomographic P and S wave velocity, radial anisotropy, electrical resistivity, and heat flow data. The MLD is rather shallow with a depth of 68–82 km. Multiple prominent discontinuities are observed in the lithospheric mantle using constructed high‐frequency (0.5–4 Hz) P wave reflectivities. These multiple discontinuities coincide well with the broad‐scale reduction of relative P and SV wave velocities at the top of the graded transition zone from the lithosphere to the asthenosphere. Strong radial anisotropy in the upper lithosphere mantle tends to be weak across the MLD, which might reflect quasi‐laminar lithospheric heterogeneity behavior with a horizontal correlation length that is greater than its vertical correlation length. Broad‐scale electrical resistivity variations show little coherence with the MLD. Given these various geophysical observations, the upper lithosphere exhibits rigid and elastic properties above the MLD, while the lower lithosphere tends to be ductile and rheological or viscous. A model comprising quasi‐laminar lithospheric heterogeneity could effectively represent the MLD characteristics beneath the Archean continent.

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Platinum group element geochemistry and whole‐rock systematics of the Vempalle sills, Cuddapah Basin, India: Implications on sulphur saturation history, mantle processes, and tectonic setting

Singh

Manikyamba

2019

Geological Journal

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The intracratonic Cuddapah Basin of southern peninsular India has multiple phases of magmatism exposed as mafic intrusives and extrusives in the Vempalle and Tadpatri formations. We report platinum group element geochemistry along with whole‐rock systematics of the mafic sills from the Vempalle Formation to understand their sulphur saturation history, source characteristics, and tectonic setting. These sills are medium‐ to fine‐grained dolerites with plagioclase and pyroxenes as essential minerals exhibiting sub‐ophitic to intergranular texture. Geochemically, they are characterized by moderate MgO (6.3–8.5 wt.%), Ni (55–105 ppm), Cr (20–130 ppm), and ∑PGE (22–61 ppb) contents and exhibit transitional to calc‐alkaline in nature. Primitive mantle‐ and chondrite‐normalized trace and rare earth element patterns display relative enrichment of LILE–LREE over HFSE, suggesting plume‐related intraplate magmatism with contributions from subcontinental lithospheric mantle (SCLM), lithosphere–asthenosphere interaction, crustal contamination, and fractional crystallization. Their REE relationship indicates the generation of parent magma from a heterogeneous source marked by 10–25% polybaric partial melting within spinel and garnet lherzolite domain. Platinum group elements (PGE) geochemistry reveals their sulphur‐undersaturated nature, and sulphide fractionation played a key role in the distribution of PGEs, which is evidenced by their enriched character, moderate degrees of partial melting, and crustal contamination. Further, the negative platinum anomalies in these sills indicate its removal during fractional crystallization, and the enrichment of Pd over Pt endorses the decoupling nature of these elements prior to their emplacement. Diagnostic trace element signatures and their relationship corroborate a riftogenic intraplate tectonic regime for the emplacement of the Vempalle sills through an ocean–continent transition zone.

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Geochemistry of coexisting depleted and enriched Paringa Basalts, in the 2.7Ga Kalgoorlie Terrane, Yilgarn Craton, Western Australia: Evidence for a heterogeneous mantle plume event

Cited by 82 publications

References 122 publications

Behaviour of Ni–PGE–Au–Cu in mafic–ultramafic volcanic suites of the 2.7Ga Kambalda Sequence, Kalgoorlie Terrane, Yilgarn Craton

Behaviour of Ni–PGE–Au–Cu in mafic–ultramafic volcanic suites of the 2.7Ga Kambalda Sequence, Kalgoorlie Terrane, Yilgarn Craton

Insights Into Layering in the Cratonic Lithosphere Beneath Western Australia

Platinum group element geochemistry and whole‐rock systematics of the Vempalle sills, Cuddapah Basin, India: Implications on sulphur saturation history, mantle processes, and tectonic setting

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