Re os dating pyrite

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This pyrite shows very high Re/Os ratios, from 3000 - 6000, with low common Os contents - the majority of Os present is radiogenic 187Os (94%).Nine Re-Os analyses of pyrite yield an isochron age of ca. Consequently, genetic models for ore formation are poorly constrained and remain controversial. The Irish Midlands region contains one of the world’s largest hydrothermal Zn-Pb ore districts, but uncertainty exists in the timing of mineralization relative to host rock ages.We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.To learn more or modify/prevent the use of cookies, see our Cookie Policy and Privacy Policy.The Re-Os ages overlap with the ages of lower Carboniferous volcanic rocks in the Midlands, which are the product of magmatism that has been invoked as the driving force for hydrothermal activity.

For sulfide minerals, Re-Os geochronology has direct application to the timing and duration of hydrothermal ore deposit formation.This method has been applied to better understand the origins of global Oceanic Anoxic Events (OAEs), the timing of shale deposition and correlation in Precambrian sedimentary basins and this rise of oxygen on Earth.Re-Os isotopes in natural hydrocarbons is the third major research theme of the laboratory, again approaching this new field from both a systematic evaluation and application perspective.Selby has been involved in the development and application of the Re-Os isotope system since 1999.

His research focuses on the systematic development and application of the Re-Os isotope system to economic geology (e.g., sulfide Re-Os geochronology), chronology of sedimentary and petroleum systems, paleoclimate, paleoceanography, For excellence in contributions to applied and economic aspects of the science Selby has been awarded the William Smith Fund (2009) from The Geological Society of London.

Development of Re-Os geochronology for crustal matrices has been ongoing since 1998 in the laboratory.

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