AMT法勘查额济纳盆地与巴丹吉林沙漠接触关系  

Audio Magnetotelluric Survey in Ejina Basin for the Contacting Relationship with the Badain Jaran Desert

作　　者：武毅[1] 孙银行[1] 卢放[1] 胡文广[1] 连捷[1] 于蕾[1] 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,保定071051

出　　处：《科技导报》2014年第20期22-26,共5页Science & Technology Review

基　　金：国家自然科学基金重点项目(91025019)

摘　　要：查明额济纳盆地东部与巴丹吉林沙漠之间的接触关系,有助于分析额济纳盆地地下水水位下降、生态环境恶化的原因。通过当地地质资料和物探方法的对比分析,选择合理有效的音频大地电磁法(AMT)物探手段,在该区域进行了原始创新性的勘查工作。勘查结果认为额济纳盆地上升、巴丹吉林沙漠下降,两侧地层岩性厚度变化较大,推断额济纳盆地与巴丹吉林沙漠为张性断层接触。研究可为分析两者之间地下水转化关系和额济纳盆地地下水水位下降原因、探讨盆地与沙漠区地下水形成机制提供依据,对恢复治理额济纳盆地生态环境具有一定帮助。The contact relationship between the Ejina Basin and the Badain Jaran Desert can be used to analyze the Ejina Basin groundwater level drops and the environmental degradation. By comparing local geological and geophysical methods of data analysis, the reasonable and effective audio magnetotelluric （AMT） geophysical methods are selected in the region to carry out original and innovative explorations, and a good result is achieved. Survey results suggest that the Ejina Basin is in rising, Badan Jaran Desert in declining, the lithology thinknesses on both sides see a great change, and the contact between the Ejina Basin and the Badna Jaran Desert is an extensional fault. The results can provide a basis for the analysis of the groundwater transforming relationship and, the Ejina Basin groundwater level declining in the studied area, and for the study of the groundwater formation mechanism in basin and desert, which is of important social significance for the recovery and the management of the ecological environment in the Ejina Basin.

关 键 词：额济纳盆地 巴丹吉林沙漠 接触关系 AMT勘查 

分 类 号：P631.325[天文地球—地质矿产勘探]