Search Results - "Beresford, S. W."

The role of mantle-derived volatiles in the petrogenesis of Palaeoproterozoic ferropicrites in the Pechenga Greenstone Belt, northwestern Russia: Insights from in-situ microbeam and nanobeam analysis of hydromagmatic amphibole by Fiorentini, M.L., Beresford, S.W., Deloule, E., Hanski, E., Stone, W.E., Pearson, N.J.

“…New in-situ trace element and hydrogen isotopic data of hydromagmatic amphiboles from ferropicritic gabbro–wehrlite intrusions and lava flows of the…”
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Controls on the emplacement and genesis of the MKD5 and Sarah’s Find Ni–Cu–PGE deposits, Mount Keith, Agnew–Wiluna Greenstone Belt, Western Australia by Fiorentini, M. L., Rosengren, N., Beresford, S. W., Grguric, B., Barley, M. E.

“…The Mount Keith (MKD5) nickel sulfide deposit is one of the largest komatiite-hosted nickel sulfide deposits in the world; it is hosted by a distinctive…”
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Vesicles in thick komatiite lava flows, Kambalda, Western Australia by Beresford, S. W, Cas, R. A. F, Lambert, D. D, Stone, W. E

“…Traditionally, vesicles have been considered to be rare in komatiites, however, field studies at Kambalda, Western Australia, and critical literature…”
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Evidence of water degassing during emplacement and crystallization of 2.7 Ga komatiites from the Agnew-Wiluna greenstone belt, Western Australia by Fiorentini, M. L., Beresford, S. W., Stone, W. E., Deloule, E.

“…Komatiites are ancient volcanic rocks, mostly over 2.7 billion years old, which formed through >30% partial melting of the mantle. This study addresses the…”
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Platinum-group element alloy inclusions in chromites from Archaean mafic-ultramafic units: evidence from the Abitibi and the Agnew-Wiluna Greenstone Belts by Fiorentini, M. L., Stone, W. E., Beresford, S. W., Barley, M. E.

“…The paper investigates the role of primary magmatic phases in the fractionation and concentration of PGE in Archaean mafic and ultramafic systems. The…”
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Anomalously high δD values in an Archean ferropicritic melt; implications for magma degassing by Stone, William E, Deloule, E, Beresford, S. W, Fiorentini, M

“…The in situ isotope analysis of igneous amphibole from the Boston Creek ferropicrite, in the Abitibi belt, Ontario, a 100-m-thick mafic-ultramafic unit,…”
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Role of volatiles and metasomatized subcontinental lithospheric mantle in the genesis of magmatic Ni-Cu-PGE mineralization: insights from in situ H, Li, B analyses of hydromagmatic phases from the Valmaggia ultramafic pipe, Ivrea-Verbano Zone (NW Italy) by Fiorentini, M. L., Beresford, S. W.

“…In situ trace element and isotopic data of hydromagmatic phases from the Valmaggia peridotite pipe provide insights into the origin of the metasomatic fluids…”
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Structural modification of the komatiite-associated Harmony nickel sulfide deposit, Leinster, Western Australia by Duuring, P, Bleeker, W, Beresford, S. W

“…The Harmony nickel sulfide deposit (3.2 Mt of ore) is situated along the eastern margin of the Agnew-Wiluna greenstone belt, Eastern Goldfields, Western…”
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Ruthenium-chromium variation; a new lithogeochemical tool in the exploration for komatiite-hosted Ni-Cu-(PGE) deposits by Fiorentini, M. L, Beresford, S. W, Barley, M. E

“…We present a new lithogeochemical method to target prospective komatiites that may host Ni-Cu-(PGE) deposits. The new methodology is based on the geochemical…”
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Kaingaroa Ignimbrite, Taupo Volcanic Zone, New Zealand: Evidence for asymmetric caldera subsidence of the Reporoa Caldera by Beresford, S. W., Cole, J. W.

“…The 0.23 Ma Kaingaroa Ignimbrite represents the only large-scale eruption from Reporoa Caldera, Taupo Volcanic Zone, New Zealand. A combination of detailed…”
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Contrasting komatiite belts, associated Ni-Cu-(PGE) deposit styles and assimilation histories by Fiorentini, M. L., Beresford, S. W., Rosengren, N., Barley, M. E., McCuaig, T. C.

“…The Agnew-Wiluna greenstone belt in the Yilgarn Craton of Western Australia is the most nickel-sulfide-endowed komatiite belt in the world. The Agnew-Wiluna…”
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Komatiitic sills and multigenerational peperite at Dundonald Beach, Abitibi greenstone belt, Ontario; volcanic architecture and nickel sulfide distribution by Houlé, Michel G, Gibson, H. L, Lesher, C. M, Davis, P. C, Cas, R. A. F, Beresford, S. W, Arndt, N. T

“…The density and the tectonic stresses in the deep crust and the physical properties of komatiitic magmas determine the level to which they will rise, but once…”
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Internal stratigraphic architecture of the komatiitic dunite-hosted MKD5 disseminated nickel sulfide deposit, Mount Keith Domain, Agnew-Wiluna Greenstone Belt, Western Australia by Rosengren, N. M., Grguric, B. A., Beresford, S. W., Fiorentini, M. L., Cas, R. A. F.

“…The MKD5 nickel deposit is hosted by the Mount Keith Ultramafic Complex (MKUC), a dunite body of komatiitic affinity located in the Agnew-Wiluna Greenstone…”
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Lithic types in ignimbrites as a guide to the evolution of a caldera complex, Taupo volcanic centre, New Zealand by Cole, J.W., Brown, S.J.A., Burt, R.M., Beresford, S.W., Wilson, C.J.N.

“…Taupo volcanic centre is one of two active rhyolite centres in the Taupo Volcanic Zone (TVZ), and has been sporadically active over the past ca. 300 ka. At…”
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An intrusive origin for the komatiitic dunite-hosted Mount Keith disseminated nickel sulfide deposit, Western Australia by Rosengren, N. M, Beresford, S. W, Grguric, B. A, Cas, R. A. F

“…The MKD5 nickel deposit at Mount Keith is hosted within the Mount Keith Ultramafic Complex, a thick komatiitic dunite body previously interpreted as either a…”
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Atypical stratiform sulfide-poor platinum-group element mineralisation in the Agnew - Wiluna Belt komatiites, Wiluna, Western Australia by Fiorentini, M. L., Beresford, S. W., Grguric, B., Barnes, S. J., Stone, W. E.

“…A new style of komatiite-associated sulfide-poor platinum-group element (PGE: Os, Ir, Ru, Rh, Pt, Pd) mineralisation has been identified at Wiluna in the…”
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Weak chemical and mineralogical zonation in the Kaingaroa Ignimbrite, Taupo Volcanic Zone, New Zealand by Beresford, S. W., Cole, J. W., Weaver, S. D.

“…The 0.23 Ma Kaingaroa Ignimbrite is a composite, multiple flow-unit ignimbrite erupted from the Reporoa Caldera, Taupo Volcanic Zone, New Zealand. Reporoa…”
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The role of water in Precambrian ultramafic magmatism: Insights from an in situ microbeam and nanobeam assessment of hydromagmatic amphibole by Fiorentini, M.L., Beresford, S.W., Deloule, E., Stone, W.E., Hanski, E., Pearson, N.

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Preface ? Special Issue: New frontiers in research on NiS?PGE mineralization: introduction and overview by Stone, W. E., Beresford, S. W.

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Echinus Granite and Pepin Group of Pepin Island, northeast Nelson, New Zealand: Drumduan Terrane basement or exotic fragment in the Median Tectonic Zone? by Beresford, S. W., Bradshaw, J. D., Weaver, S. D., Muir, R. J.

“…On the northwest coast of Pepin Island, near Nelson City, New Zealand, the Carboniferous Echinus Granite cuts granitic mylonite and orthogneiss of the Platform…”
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