Zinc stable isotopes in seafloor hydrothermal vent fluids and chinmeys
Zinc stable isotopes in seafloor hydrothermal vent fluids and chinmeys
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DOI：
10.1016/j.epsl.2007.12.011
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发表时间：
2008-05-15
影响因子：
5.3
通讯作者：
Boyle, Edward A.
中科院分区：
文献类型：
--
作者：
John, Seth G.;Rouxel, Olivier J.;Boyle, Edward A.
在热液矿床中发现了许多最重和最轻的天然锌同位素比率。然而，对热液系统中锌同位素分馏的过程了解甚少。为了更好地评估热液系统中Zn同位素的总范围，并了解导致这种同位素分选的因素，我们在东太平洋隆起（EPR） 9-10°N和21°N的众多喷口中测量了海底热液流体中的Zn同位素，在大西洋中脊的TAG热液场和瓜伊马盆地。在这些地点测量的流体δ Zn-66值范围为+0.00‰至+1.04‰。在检查的许多物理和化学参数中，发现只有温度与流体δ Zn-66值相关。低温流体(
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 degrees N and 21 degrees N on the East Pacific Rise (EPR), the TAG hydrothermal field on the Mid-Atlantic Ridge, and in the Guaymas Basin. Fluid delta Zn-66 values measured at these sites range from +0.00 parts per thousand to +1.04 parts per thousand. Of the many physical and chemical parameters examined, only temperature was found to correlate with fluid delta Zn-66 values. Lower temperature fluids (