Zinc stable isotopes in seafloor hydrothermal vent fluids and chimneys
| Autor: | Alison M. Engwall, Seth G. John, Paul R. Craddock, Olivier Rouxel, Edward A. Boyle |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Sulfide Isotope Stable isotope ratio Geochemistry Mineralogy chemistry.chemical_element Zinc Seafloor spreading Hydrothermal circulation Geophysics chemistry Space and Planetary Science Geochemistry and Petrology Guaymas Basin Earth and Planetary Sciences (miscellaneous) Geology Hydrothermal vent |
| Zdroj: | Earth and Planetary Science Letters. 269:17-28 |
| ISSN: | 0012-821X |
| DOI: | 10.1016/j.epsl.2007.12.011 |
| Popis: | Many of the heaviest and lightest natural zinc (Zn) isotope ratios have been discovered in hydrothermal ore deposits. However, the processes responsible for fractionating Zn isotopes in hydrothermal systems are poorly understood. In order to better assess the total range of Zn isotopes in hydrothermal systems and to understand the factors which are responsible for this isotopic fractionation, we have measured Zn isotopes in seafloor hydrothermal fluids from numerous vents at 9–10°N and 21°N on the East Pacific Rise (EPR), the TAG hydrothermal field on the Mid-Atlantic Ridge, and in the Guaymas Basin. Fluid δ66Zn values measured at these sites range from + 0.00‰ to + 1.04‰. Of the many physical and chemical parameters examined, only temperature was found to correlate with fluid δ66Zn values. Lower temperature fluids ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect