PPT-Taking account of sulfur isotope geochemistry in the genesis of Irish-type base-metal

Adrian Boyce Tony Fallick and Gary Mullen Drew Drummond and Aileen Doran Scottish Universities Environmental Research Centre SUERC East Kilbride Glasgow Scotland UK Mogul . Chapter 6. Isotope Geochemistry. In isotope geochemistry, our primary interest is not in dating, but using the time-dependent nature of isotope ratios to make inferences about the nature of reservoirs in the Earth and their evolution.. S.No. .. TOPIC. PAGE No.. 1. INTRODUCTION. 3. 2. MINERALS OCCURING. IN FORM OF HYDROTHERMAL DEPOSITS. 4-5. 3. ORIGIN OF HYDROTHERMAL FLUIDS. A Brave New World?. Graham R Carr. CSIRO Exploration and Mining. June 2013. Outline. Traditional Use of Pb Isotopes in Metallogenic Studies. Exploration Geochemistry – . General Principles. Gossans and Residual Soils. Stable isotopes are used in CCS to look for leakage of CO2 into overlying aquifers or into the surface environment. What are Stable Isotopes. These are isotope that do not decay over time as the radiogenic isotope do.. Lecture 30 . Beginnings. Stable isotope geochemistry is concerned with variations in the isotopic compositions of elements arising . small . differences in the chemical behavior of different isotopes of an . Lecture 33 . Stable Isotopes in the Hydrosphere and Biosphere. Isotopic Fractionation in the Hydrosphere. δ. 18. O in the oceans is nearly constant at 0. However, as a consequence of Rayleigh fractionation and temperature dependence of the water-vapor fractionation factor, the isotopic composition of precipitation varies widely.. ‰. ), or “. per mil. ”. . For example. , . δ. 15. N. Air. = . 12 per mil . means that the sample was analyzed against a reference material and found to be 12 molecules per thousand more abundant than in air – . COMMON plumeswere initially thought to consist of primitive mantle (e.g., Schilling, 1973). As we found, mixing be-tween primitive and depleted mantle can explain the Sr and Nd isotopic compositions Indian Ridge Anyang Pan a, b, c , Qunhui Yang a, *, Huaiyang Zhou a , *, Fuwu Ji a , Hu Wang a , Richard D. Pancost b a State Key Laboratory of Marine Geology, School of Ocean a nd Earth Sci Järjellä ja Vasaralla 6 CONTENTSOriginal publications and author contributionIntroductionKomatiitesKomatiite-hosted Ni-Cu- depositsOrigin of komatiite-hosted Ni-Cu- depositsChalcophile elementsSulfu (804) 323-6800 (800) 285-6609vacu.org Visit a branchMobile If you have any questions, please contact me: ______________________ Email addr ___________________________ ure ____________________________ Indian RidgeAnyang Pan a b cQunhui Yang a Huaiyang Zhou aFuwuJi a HuWangaRichard D Pancost baState Key Laboratory of Marine Geology School of Ocean and Earth Science Tongji University Siping Rd 1239 S Sandstone uranium deposits occur in carbon and/or . pyrite-bearing fluvial . (less commonly marine), . arkosic. , medium to . coarse-grained sandstones . that contain, are interbedded with, and are bounded by . Glenn Piercey. SIMS Lab - CREAIT. Sample Preparation. SIMS Instrument. Data Analysis. Case Studies. . - . Lemarchant. Deposit – Central NL. . - Ming Deposit – Central NL. - . Voisey’s. Bay – Northern Labrador.