Geochemistry of gases in spring waters along the Alpine Fault, South Island of New Zealand

新西兰南岛的阿尔卑斯断层是一个主要特征，显示出27毫米/年的东北运动和快速隆起，尽管历史上没有发生过大地震。在ICDP项目的科学钻探到阿尔卑斯断层的背景下，我们提出了一个区域调查的气体成分从泉水沃茨两侧的故障。这项研究的目的是确定地幔和地壳中的气体来源，并揭示可能改变气体成分的过程。特别是，我们计划探索是否有任何系统的阿尔卑斯山断层的西北侧和东南侧的成分差异，分别。为此，我们将确定主要和痕量气体组分（CO2，N2，CH 4，Ar，He等）的丰度。稀有气体（He，Ne，Ar，Kr，Ar）在游离态或溶解态的泉水气体中的元素和同位素组成。我们的数据将作为比较钻井过程中获得的结果的基础。

The Alpine Fault on the South Island of New Zealand is a major feature, showing a NE movement of 27 mm/yr and rapid uplift although no major earthquakes have occurred in historic time. In the context of the ICDP project for scientific drilling into the Alpine Fault, we propose a regional investigation of the composition of gases emanating from spring waters on both sides of the fault. The study aims at characterizing the gas sources in both the mantle and the crust and at revealing the processes that may have modified the gas compositions. In particular, we plan to explore whether there are any systematic compositional differences on the northwest and southeast sides of the Alpine Fault, respectively. To do this, we will determine the abundances of major and trace gas components (CO2, N2, CH4, Ar, He etc.) and the elemental and isotopic compositions of the noble gases (He, Ne, Ar, Kr, Xe) in free or dissolved spring gases. Our data will serve as a basis of comparison for results obtained during drilling.