Geochemistry of Gases in the Alpine Fault, DFDP-2

高山断层中气体的地球化学，DFDP-2

• 批准号: 252671466
• 负责人: Dr. Martin Zimmer
• 金额: --
• 依托单位: Sektion 3.1: Anorganische und Isotopengeochemie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/252671466?language=en
• 关键词: Geochemistry; Gases; Alpine; Fault; DFDP

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 DFDP-2 into the Alpine Fault, we propose to perform a systematic and comprehensive study on the composition of gases extracted on-line from drill mud and from down hole fluid samplers, which will be obtained during the drilling campaign in 2014.The proposed technique provides information on all free circulating fluids from the drilled rock, faults and alteration zones and allows, thus, to make a qualitative and semi-quantitative assessment of the volatile components along the drilled profile through the Alpine fault. In selected gas samples we will determine the abundances of major and trace gas components (CO2, N2, CH4, Ar, He etc.), the elemental and isotopic compositions of the noble gases (He, Ne, Ar, Kr, Xe) and 12C/13C in CO2 and CH4.Based on the chemical characterization of the individual fluid systems above and below the fault zone we hope to provide answers to the key question: Are there any systematic compositional differences in the gas composition of the Indo-Australian and Pacific plates along the Alpine fault, and does a hydraulic connection exist between the structural elements at depth and the hot springs at the surface?

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DFDP-2进入阿尔卑斯断层的背景下，我们建议对从钻井泥浆和井下流体采样器中在线提取的气体成分进行系统和全面的研究，这些气体将在2014年的钻井活动中获得。所提出的技术提供了来自钻凿岩石、断层和蚀变带的所有自由循环流体的信息，因此，对沿沿着钻过阿尔卑斯断层的剖面的挥发性组分进行定性和半定量评价。在选定的气体样品中，我们将确定主要和痕量气体成分（CO2、N2、CH 4、Ar、He等）的丰度，稀有气体的元素和同位素组成（He，Ne，Ar，Kr，Ar）和CO_2和CH_4中~（12）C/~（13）C比值。沿沿着阿尔卑斯断层的印度-澳大利亚板块和太平洋板块的气体成分是否存在系统的成分差异，深层的结构要素和表层的温泉之间是否存在水力联系？

项目成果

Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand

新西兰中部高山断层 DFDP-2B 基岩地质

• DOI: 10.1080/00288306.2017.1375533
• 发表时间: 2017
• 期刊: New Zealand Journal of Geology and Geophysics
• 影响因子: 2.2
• 作者: Zimmer

Petrophysical, Geochemical, and Hydrological Evidence for Extensive Fracture‐Mediated Fluid and Heat Transport in the Alpine Fault's Hanging‐Wall Damage Zone

• DOI: 10.1002/2017gc007202
• 发表时间: 2017-12
• 期刊: Geochemistry
• 影响因子: 3.7
• 作者: John Townend;R. Sutherland;V. Toy;M. Doan;B. Célérier;C. Massiot;Jamie Coussens;T. Jeppson;Lucie Janku‐Capova;L. Remaud;P. Upton;D. Schmitt;P. Pezard;J. Williams;M. Allen;L. Baratin;N. Barth;Leeza Becroft;C. Boese;C. Boulton;N. Broderick;B. Carpenter;C. Chamberlain;A. Cooper;A. Coutts;S. Cox;L. Craw;J. Eccles;D. Faulkner;J. Grieve;J. Grochowski;Anton K. Gulley;A. Hartog;G. Henry;J. Howarth;K. Jacobs;N. Kato;S. Keys;Martina Kirilova;Y. Kometani;R. Langridge;Weiren Lin;T. Little;Adrienn Lukács;D. Mallyon;E. Mariani;L. Mathewson;B. Melosh;C. Menzies;Joseph M. Moore;L. Morales;H. Mori;A. Niemeijer;O. Nishikawa;O. Nitsch;J. Paris;D. Prior;K. Sauer;M. Savage;A. Schleicher;N. Shigematsu;S. taylor-offord;D. Teagle;H. Tobin;R. Valdez;K. Weaver;T. Wiersberg;M. Zimmer

Extreme hydrothermal conditions at an active plate-bounding fault

• DOI: 10.1038/nature22355
• 发表时间: 2017-05
• 期刊: Nature
• 影响因子: 64.8
• 作者: R. Sutherland;John Townend;V. Toy;P. Upton;Jamie Coussens;M. Allen;L. Baratin;N. Barth;Leeza Becro