Absence of molybdenum isotope fractionation during magmatic differentiation at Hekla volcano, Iceland

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Nitrogen in peridotite xenoliths: lithophile behavior and magmatic isotope fractionation

1: Department of Earth and Environmental Sciences, University of Illinois at Chicago, 845 W. Taylor Street, MC186, SES2440, Chicago, IL 60607, U.S.A. 2: Centre de Recherches Pétrographiques et Géochimiques, Nancy Université, CNRS, BP 20, 54501 Vandoeuvre Cedex France 3: Université Européenne de Bretagne, France. 4: Université de Brest ; CNRS ; UMR 6538 Domaines Océaniques; Institut Universitair...

متن کامل

Mass-independent Isotope Fractionation of Molybdenum and Ruthenium in Murchison

Introduction: Dauphas et al. [1] and Yin et al. [2] reported molybdenum isotopic anomalies in bulk undifferentiated and differentiated meteorites and this was the first time that isotopic anomalies were found on the scale of a meteorite hand-specimen. Even more recently, Chen and Papanastassiou [3,4] identified ruthenium isotopic anomalies in meteorites. Dauphas et al. [5] used theoretical prod...

متن کامل

Oceanic molybdenum isotope fractionation: Diagenesis and hydrothermal ridgeâ•’flank alteration

[1] Isotopic analyses of dissolved molybdenum are presented for sediment pore waters from a reducing sedimentary basin and for fluids from a low-temperature ridge flank hydrothermal system. dMo in these fluids range from 0.8 to 3.5% (relative to a laboratory standard), demonstrating that marine sedimentary reactions significantly fractionate Mo isotopes. Within the upper 3 cm of sediment, manga...

متن کامل

Hydrogen isotope fractionation during H

Hydrogen metabolism was studied in the anaerobic bacterium, Sporomusa sp. strain DMG 58, by measuring natural abundance levels of deuterium in H 2 , H 2 O, and individual fatty acids during acetogenic growth on H 2 / CO 2 . Four cultures were grown, each in medium with a distinct hydrogen-isotopic composition ( δ D-H 2 O). The δ D value of H 2 was quantified in the residual gas exiting the grow...

متن کامل

Molybdenum isotope fractionation by cyanobacterial assimilation during nitrate utilization and N2fixation

We measured the δ⁹⁸Mo of cells and media from molybdenum (Mo) assimilation experiments with the freshwater cyanobacterium Anabaena variabilis, grown with nitrate as a nitrogen (N) source or fixing atmospheric N₂. This organism uses a Mo-based nitrate reductase during nitrate utilization and a Mo-based dinitrogenase during N₂ fixation under culture conditions here. We also demonstrate that it ha...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Geochimica et Cosmochimica Acta

سال: 2015

ISSN: 0016-7037

DOI: 10.1016/j.gca.2015.04.011