Controls on ostracod valve geochemistry: Part 2. Carbon and oxygen isotope compositions
نویسندگان
چکیده
منابع مشابه
Chapter 2 : in Situ Oxygen Isotope Geochemistry by Ion Microprobe
Mineralogical Association of Canada Short Course 41, Toronto, May 2009, p. 19-63 INTRODUCTION High precision and accuracy with in situ analysis has been a “holy grail” for generations of stable isotope geochemists who employed a range of strategies for separation of heterogeneous samples and for interpretation of data from mixed samples. However, in situ techniques have in the past suffered fro...
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Variations of oxygen isotope ratios in arc-related lavas can constrain trace-element enrichment in a mantle source being fluxed by addition the contributions of subducted crustal igneous rocks, sediments, and of aqueous fluid. Comparison of this model with observed variations fluids to the sub-arc mantle. We have measured oxygen isotope in the geochemistry of lavas from the Vanuatu–Fiji–New Cal...
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After the late Cryogenian glaciation the central region of Brazil was the site of extensive deposition of platformal carbonates of the Araras Group. This group includes a basal cap carbonate sequence succeeded by transgressive, deep platform deposits of bituminous lime mudstone and shale. Facies and stratigraphic data combined with carbon and oxygen isotopic analyses of the most complete sectio...
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Isotopic analysis can be performed on minerals, rocks, soil, tissue, gases, and liquids – just about anything. In view of the broad possibilities, we will only cover a few generalities here. In most instances, the element to be analyzed must be first isolated and purified before it can undergo isotopic analysis in a mass spectrometer. Purification is necessary to avoid isobaric interferences an...
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-The applicability of rapid and precise laser probe analysis of tooth enamel for 6 ~O has been verified, and the method has been applied to different modern herbivores in East Africa. Sampling and pretreatment procedures involve initial bleaching and grinding of enamel to <75 /~m, and elimination of adsorbed water and organic compounds with BrFs. Typical analytical reproducibilities for 0 .5-2 ...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 2011
ISSN: 0016-7037
DOI: 10.1016/j.gca.2011.09.008