Search Results - "IRELAND, Trevor R"
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The link between reduced porphyry copper deposits and oxidized magmas
Published in Geochimica et cosmochimica acta (15-02-2013)“…Porphyry copper deposits account for more than 80% of the world’s total Cu resources. However, the formation mechanism and controlling factors of porphyry…”
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Globally asynchronous sulphur isotope signals require re-definition of the Great Oxidation Event
Published in Nature communications (08-06-2018)“…The Great Oxidation Event (GOE) has been defined as the time interval when sufficient atmospheric oxygen accumulated to prevent the generation and preservation…”
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Trace element content of pyrite from the Kapai Slate, St. Ives gold district, Western Australia
Published in Economic geology and the bulletin of the Society of Economic Geologists (01-09-2016)“…The Kapai Slate is a continuous, pyrite-rich carbonaceous shale horizon within the St. Ives Au district that is spatially related to high-grade Au…”
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Timing of global crustal metamorphism on Vesta as revealed by high-precision U–Pb dating and trace element chemistry of eucrite zircon
Published in Earth and planetary science letters (01-01-2015)“…Non-cumulate eucrites represent basaltic crust that experienced a complex thermal history involving multistage metamorphism and metasomatism, probably on…”
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The Mesozoic terrane boundary beneath the Taupo Volcanic Zone, New Zealand, and potential controls on geothermal system characteristics
Published in New Zealand journal of geology and geophysics (02-10-2021)“…The Taupo Volcanic Zone (TVZ) in the central North Island of New Zealand lies across the boundary formed in the late Mesozoic between two major basement…”
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Isotopic records in CM hibonites: Implications for timescales of mixing of isotope reservoirs in the solar nebula
Published in Geochimica et cosmochimica acta (01-09-2009)“…The magnesium isotopic compositions of 26 hibonite-bearing inclusions from the CM chondrite Murchison, as well as isotopic measurements on a subset of these…”
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A re-evaluation of the Mn–Cr systematics of olivine from the angrite meteorite D’Orbigny using Secondary Ion Mass Spectrometry
Published in Geochimica et cosmochimica acta (15-12-2013)“…‘Quenched’ angrite meteorites are among the best time markers of igneous activity in early formed planetesimals of the Solar System. They can be precisely…”
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Mn–Cr relative sensitivity Factors for Secondary Ion Mass Spectrometry analysis of Mg–Fe–Ca olivine and implications for the Mn–Cr chronology of meteorites
Published in Geochimica et cosmochimica acta (01-06-2013)“…Secondary Ion Mass Spectrometry (SIMS) is used to date meteoritic olivine using the 53Mn–53Cr short-lived decay scheme. This involves simultaneously measuring…”
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The elemental abundances (with uncertainties) of the most Earth-like planet
Published in Icarus (New York, N.Y. 1962) (01-01-2018)“…•We present a set of concordance estimates (with uncertainties) for the elemental abundances of the primitive mantle, core, and Bulk Earth.•The uncertainties…”
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Global atmospheric oxygen variations recorded by Th/U systematics of igneous rocks
Published in Proceedings of the National Academy of Sciences - PNAS (17-09-2019)“…Atmospheric oxygen has evolved from negligible levels in the Archean to the current level of about 21% through 2 major step rises: The Great Oxidation Event…”
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Evaluation of Duluth Complex anorthositic series (AS3) zircon as a U-Pb geochronological standard: new high-precision isotope dilution thermal ionization mass spectrometry results
Published in Geochimica et cosmochimica acta (01-10-2003)“…U-Pb zircon geochronology is increasingly called upon to achieve the resolution of absolute time at the 0.1% to 1% level for rocks of Phanerozoic to Hadean…”
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The Earth, Planets and Space Special Issue: “Science of solar system materials examined from Hayabusa and future missions”
Published in Earth, planets, and space (26-07-2015)Get full text
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Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites
Published in Science (American Association for the Advancement of Science) (24-02-2023)“…Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the…”
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The volatility trend of protosolar and terrestrial elemental abundances
Published in Icarus (New York, N.Y. 1962) (01-08-2019)“…We present new estimates of protosolar elemental abundances based on an improved combination of solar photospheric abundances and CI chondritic abundances…”
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Tectonic Evolution of the Western Margin of the Burma Microplate Based on New Fossil and Radiometric Age Constraints
Published in Tectonics (Washington, D.C.) (01-05-2019)“…Results of biostratigraphic and geochronological investigations in eastern Nagaland and Manipur, NE India, provide new constraints on the tectonic evolution of…”
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Oxygen Isotopes and Sampling of the Solar System
Published in Space science reviews (01-03-2020)“…Oxygen is the dominant element in our planetary system. It is therefore remarkable that it shows substantial isotopic diversity both in mass-dependent…”
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Sources of auriferous fluids associated with a Neoarchean BIF-hosted orogenic gold deposit revealed by the multiple sulfur isotopic compositions of zoned pyrites
Published in Contributions to mineralogy and petrology (01-04-2021)“…Internal textures, multiple sulfur isotopic compositions, and contents of gold, selenium, and molybdenum of ore-related pyrites from a Neoarchean…”
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Triple-oxygen isotopes of stony micrometeorites by secondary ion mass spectrometry (SIMS): Olivine, basaltic glass and iron oxide matrix effects for sensitive high-mass resolution ion microprobe-stable isotope (SHRIMP-SI)
Published in Rapid communications in mass spectrometry (15-01-2025)“…Micrometeorites are extraterrestrial particles smaller than ~2 mm in diameter, most of which melted during atmospheric entry and crystallised or quenched to…”
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Solid-phase transfer into the forearc mantle wedge: Rutile and zircon xenocrysts fingerprint subducting sources
Published in Earth and planetary science letters (01-01-2022)“…•Rutiles and zircons occur in forearc mantle wedge rocks in New Caledonia.•Age spectra fingerprint xenocrysts to possible sources in down-going slab.•First…”
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A Model Earth-sized Planet in the Habitable Zone of α Centauri A/B
Published in The Astrophysical journal (01-03-2022)“…The bulk chemical composition and interior structure of rocky exoplanets are fundamentally important to understand their long-term evolution and potential…”
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