地质调查与研究
地質調查與研究
지질조사여연구
Geological Survey and Research
2015年
3期
218-221
,共4页
地震勘探%可控震源%逆冲断层%张掖盆地南缘
地震勘探%可控震源%逆遲斷層%張掖盆地南緣
지진감탐%가공진원%역충단층%장액분지남연
seismic exploration%vibroseis system%thrust fault%the Southern Margin of Zhangye Basin
据已有地质资料分析研究,张掖盆地南缘存在隐伏叠瓦状逆冲断裂构造带.可控震源地震勘探可以精确、快速、有效探测隐伏断裂构造格局.通过野外试验确立了数据采集与处理抑噪关键技术.基于地震剖面标准反射波组的形态和相互空间位置变化,共解译推断逆冲断层 4 条、岩性分界面 1 处;查明了张掖盆地南缘第四系地层结构、厚度变化规律等地质要素.为张掖盆地水文地质填图提供了科学依据.
據已有地質資料分析研究,張掖盆地南緣存在隱伏疊瓦狀逆遲斷裂構造帶.可控震源地震勘探可以精確、快速、有效探測隱伏斷裂構造格跼.通過野外試驗確立瞭數據採集與處理抑譟關鍵技術.基于地震剖麵標準反射波組的形態和相互空間位置變化,共解譯推斷逆遲斷層 4 條、巖性分界麵 1 處;查明瞭張掖盆地南緣第四繫地層結構、厚度變化規律等地質要素.為張掖盆地水文地質填圖提供瞭科學依據.
거이유지질자료분석연구,장액분지남연존재은복첩와상역충단렬구조대.가공진원지진감탐가이정학、쾌속、유효탐측은복단렬구조격국.통과야외시험학립료수거채집여처리억조관건기술.기우지진부면표준반사파조적형태화상호공간위치변화,공해역추단역충단층 4 조、암성분계면 1 처;사명료장액분지남연제사계지층결구、후도변화규률등지질요소.위장액분지수문지질전도제공료과학의거.
According to the known geological information,there is a concealed imbricated thrust fault belt on the southern margin of Zhangye basin,which can be explored accurately and effectively by vibroseis seismic.The key techniques for data acquisition and the noise suppression processing were got through the field experiments,as well as the high resolution seismic exploration data at southern margin of the Zhangye basin.Based on the form of the standard seismic reflection wave and the space position change to each other,4 thrust faults and 1 lith-ologic interface were inferred.Vibroseis seismic method can not only find out the quaternary stratum structure,thickness variation and other geological factors,but also provide scientific evidence for hydro-geological map-ping in Zhangye basin.
