地震地磁观测与研究2023，Vol.44Issue(6)：70-77,8.DOI:10.3969/j.issn.1003-3246.2023.06.011
江西南昌新建—樵舍断裂土壤气Rn、CO2地球化学特征
Geochemical characteristics of Rn and CO2 in soil gas in Xinjian-Qiaoshe fault in Nanchang,Jiangxi Province
摘要
Abstract
To study the geochemical characteristics of the soil gas and the tectono-geochemical background in Xinjian-Qiaoshe fault in Nanchang,the field fault soil gas measurement method was used to carry out two repeated observations of soil gas Rn and CO2 in April and September 2021.The results show that:① Soil gas concentration range:The concentration of Rn and CO2 in the first phase ranges from 2280 to 81408 Bq/m3 and 0.09%to 1.49%,respectively,with background values of 21984 Bq/m3 and 0.53%.The concentration of Rn and CO2 in the second phase ranges from 5560 to 97000 Bq/m3 and 0.33%to 7.05%,respectively,with background values of 30500 Bq/m3 and 1.44%.② Fault zone location determination:The concentration of soil gas near measuring point two on the measuring line is anomalous with high values.Since gas is relatively enriched near the fault zone,it is judged that this may be the shallow location of Xinjian-Qiaoshe fault.Based on the evaluation results of the fault activity of the soil gas Rn concentration measured in the two phases,it is considered that the Xinjiang-Qiaoshe fault zone is weak or not obvious at present.The results of this study can provide basic geochemical data for further study on soil gas and analysis of geological structure activities in the study area.关键词
新建—樵舍断裂带/土壤气Rn/土壤气CO2/地球化学特征/异常衬度Key words
Xinjian-Qiaoshe fault zone/soil gas Rn/soil gas CO2/geochemical characteristics/anomaly contrast引用本文复制引用
陈江贻,刘龙,邓辉,汤兰荣,许志山,严宁欣,万祺薇..江西南昌新建—樵舍断裂土壤气Rn、CO2地球化学特征[J].地震地磁观测与研究,2023,44(6):70-77,8.基金项目
中国地震局监测、预报、科研三结合课题(项目编号:3JH-2021026) （项目编号:3JH-2021026）
江西省防震减灾与工程地质灾害探测工程研究中心、江西九江杨子块体东部地球动力学野外科学观测研究站开放基金(项目编号:OGYB202204) （项目编号:OGYB202204）
