摘要
遂宁-阿坝低密度(约2 km一个测点)剖面测量土壤中氡,根据壤中氡背景、异常下限和负异常上限等地球化学指标,初步研究表明存在与地质构造块体有关的局域地球化学场和异常分布模式。文中分析和讨论了壤中氡含量和异常分布影响因素,基于主要与构造-流体活动方式和强度有关的认识,提出在该剖面挽近地质时期可能存在四个构造-流体活动系统。
The paper introduces a low-density survey of the radon concentration in soils on Suining-Aba geological profile（across the Longmen Mountains） in Sichuan.The data（including the background,the lower and the upper limits of the radon anomaly etc.） demonstrate that there are 4 different geochemical models of the radon concentration in soils,being consistent with geological blocks,respectively.The paper discusses the influential factors on the radon concentration in soils,it was believes that the main influential factor is the tectonic-fluid activity and there are 4 deferent fluid systems in the recent geological period in the area.This result is luckily the record of the radon concentration in soils before the earthquake of Sichuan.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第4期383-387,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
中国石化海相油气前瞻项目
关键词
土壤氡
低密度
地球化学
构造-流体
遂宁-阿坝
geochemical model
radon in soils
lower density survey
tectonic-fluid activity
