应用TEM资料分析麻黄泉地区地层结构及沉积环境  

AN ANALYSIS OF STRATIGRAPHIC FORMATION AND SEDIMENTARY ENVIRONMENT USING TEM IN SEARCH FOR SANDSTONE TYPE URANIUM DEPOSITS IN MAHUANGQUAN AREA

作　　者：赵希刚 贺建国 赵翠萍 陈秋 

机构地区：[1]核工业203研究所,陕西咸阳712000 [2]陕西能源技术职业学院,陕西咸阳712000

出　　处：《物探与化探》2010年第4期428-434,共7页Geophysical and Geochemical Exploration

基　　金：中央地质勘查基金项目(编码2007621012)

摘　　要：为了在酒东盆地中寻找隐伏的砂岩型铀矿,需要研究麻黄泉地区的地层结构及沉积环境。通过开展瞬变电磁测量及相应的数据处理,建立了该区视电阻率与不同岩性的对应关系,根据岩性视电阻率差异,划分了盆地基底构造单元,确定测区存在3个大的视电阻率电性层,解释出沉积中心和冲积扇的空间位置。结合砂岩型铀矿的控矿因素,认为解释的斜坡区及冲积扇可作为下一步开展找矿工作的重点地段。The Transient Electromagnetic Method（TEM） was used to detect geological information of concealed sandstone type uranium deposits in Mahuangquan area.TEM surveying data were processed to divide structural units of the basin base;stratigraphic formation and sedimentary environment were analyzed,and faulted structure was interpreted.Subsequent drilling result shows a good application effect,and hence this method can provide effective geological data for sandstone type uranium deposits in the basin.It is held that the interpreted slope area and alluvial fan can be regarded as the key places for further ore-prospecting work.

关 键 词：瞬变电磁测量 地层结构 沉积环境 砂岩型铀矿 麻黄泉地区 

分 类 号：P631[天文地球—地质矿产勘探]