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OverviewThe attraction of selenium isotopes as a paleoenvironmental tracer lies in the high redox potential of selenium oxyanions (SeIV and SeVI), the dominant species in the modern ocean. The largest isotopic fractionations occur during oxyanion reduction, which makes selenium isotopes a sensitive proxy for the redox evolution of our planet. As a case study we review existing data from the Neoarchean and Paleoproterozoic, which show that significant isotopic fractionations are absent until 2.5 Ga, and prolonged isotopic deviations only appear around 2.3 Ga. Selenium isotopes have thus begun to reveal complex spatiotemporal redox patterns not reflected in other proxies. Full Product DetailsAuthor: Eva E. Stüeken (University of St Andrews, Scotland) , Michael A. Kipp (University of Washington)Publisher: Cambridge University Press Imprint: Cambridge University Press Dimensions: Width: 23.00cm , Height: 0.20cm , Length: 15.00cm Weight: 0.600kg ISBN: 9781108749169ISBN 10: 110874916 Pages: 75 Publication Date: 08 October 2020 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: Manufactured on demand  We will order this item for you from a manufactured on demand supplier. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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