Geochemistry of groundwater in and around the MozumiSukenobu fault, northern central Japan

作     者：Hiroshi Satake Masanobu Murata Haruna Hayashi 

作者机构：Department of Environmental Chemistry and Biology Toyama University Japan 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1999年第44卷第S2期

页      面：261-262页

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

主　　题：geochemistry groundwater northern central Japan. 

摘      要：IN the northern central part of Honshu Island, Japan, there is an Atostsugawa Active Fault system that isone of the most active faults in Japan. The Mozumi-Sukenobu fault is one of the Atotsugawa Active Faultsystems and is an ENE-WSW running right lateral strike slip fault. In February 1997, a fault survey tunnel was excavated across the Mozumi-Sukenobu fault from the Nagato tunnel excavated in the *** samples were collected along the Nagato and fault survey tunnels in and around the MozumiSukenobu fault and their chemical compositions, oxygen and hydrogen isotope ratios and tritium concentrations were measured. It is clearly observed that major chemical compositions of groundwater samples collected along theNagato tunnel are Ca and HCO3 ions. These sampling points are more than 500 m distant from the Mozumi-Sukenobu fault. This Ca-HCO3 type chemical composition is common in shallow groundwater. On thecontrary, groundwater samples in and adjacent to the Mozumi-Sukenobu fault have Ne-HCO3 type chemi-