CAJ | 학술논문

根据二维地震资料解释成果，利用构造解析方法建立了塔里木盆地古董山断裂带的几何学模型，确定了断裂主要活动时代。古董山断裂带构造变形复杂，其形成演化过程与塔里木盆地周缘洋盆和造山带的演化密切相关，在加里东中期、海西早期、海西中期、喜马拉雅早期和晚期等关键变革期均发生了明显的断裂活动。古董山1号和2号断层控制断裂带两侧古生代地层的厚度变化，具有多期活动特征。古董山1号断层活动时间是加里东中期Ⅰ幕和Ⅲ幕，并具有持续增强的特征。古董山2号断层形成于海西早期，之后在石炭纪、古近纪末分别经历了负反转、正反转的过程。古董山3号控制了断裂带两侧前寒武系基底南西高北东低的构造格局，形成于喜马拉雅早期。古董山4号和5号断层形成于喜马拉雅晚期，其中古董山4号断层的逆冲推覆距离达20 km，强烈的剥蚀作用导致其上盘残留地层表现为一个单斜的构造形态。
근거이유지진자료해석성과，이용구조해석방법건립료탑리목분지고동산단렬대적궤하학모형，학정료단렬주요활동시대。고동산단렬대구조변형복잡，기형성연화과정여탑리목분지주연양분화조산대적연화밀절상관，재가리동중기、해서조기、해서중기、희마랍아조기화만기등관건변혁기균발생료명현적단렬활동。고동산1호화2호단층공제단렬대량측고생대지층적후도변화，구유다기활동특정。고동산1호단층활동시간시가리동중기Ⅰ막화Ⅲ막，병구유지속증강적특정。고동산2호단층형성우해서조기，지후재석탄기、고근기말분별경력료부반전、정반전적과정。고동산3호공제료단렬대량측전한무계기저남서고북동저적구조격국，형성우희마랍아조기。고동산4호화5호단층형성우희마랍아만기，기중고동산4호단층적역충추복거리체20 km，강렬적박식작용도치기상반잔류지층표현위일개단사적구조형태。
2-D seismic data interpretation combined with structural analysis was used to build a geometry model and de -termine active ages of the Gudongshan fault belt .The formation and evolution of this fault belt with complicated tectonic deformation may be closely related to the evolution of oceanic basins and orogenic belts around Tarim Basin .Faulting ac-tivities were the most obvious in key tectonic periods of Tarim Basin , namely the Middle Caledonian , Early Hercynian , Middle Hercynian,Early Himalayan and Later Himalayan .Faults No.1 and No.2 in the Gudongshan fault belt control the thickness of the Palaeozoic strata on both sides of the belt and also show signs of multiple-stage activities .Fault No .1 was active during phase Ⅰand Ⅲof the Middle Caledonian and shows feature of progress intensification of its activity .Fault No.2 was developed in the Early Hercynian and successively experienced negative inversion in the Carboniferous and positive inversion at the end of Paleogene .Fault No.3 was formed in the Early Himalayan and controlled the tectonic framework of the Precambrian basement which is higher in southwest and lower in northeast .Faults No.4 and No.5 were developed in the Later Himalayan .The former has a thrust displacement up to 20 km and a denudation-caused monocline at the hanging wall .