【摘要】 从塔中顺2井、中12井、顺8井岩心中识别出奥陶系及志留系古地震记录。其中志留系中地震触发沉积物变形记录最强烈,并且出现的变形层也较密集。志留系的软沉积物变形类型有:负载构造、液化砂岩脉、液化角砾岩、碟状构造、液化底劈及混滑层。卡塔克隆起演化受断裂控制,北缘为塔中1号断裂,中部为塔中10号、2号断裂,塔中2号断裂位于隆起的顶部。顺2井位于塔中1号断裂末端、中12井位于塔中10号断裂旁。断裂活动诱发地震,志留系频繁的古地震记录表明塔中地区是一个加里东期断裂与构造隆起地带。塔里木板块内部加里东运动特点是:断裂活动、强地震、隆起与坳陷。更多还原

【Abstract】 By means of observing on drilling core (Shun 2,Zhong12,Shun8) in the Central Tarim,ancient seismic records are recognized in Ordovician and Silurian.Some of strong soft-sedimentary deformation triggered by seismic events and high seismic frequency are discovered in Silurian strata of the Central Tarim region.Soft-sediment deformation structures in Silurian are represented by load,liquefied sand veins,liquefied breccia,dish structure,diapir structure and mixed layer.Tazhong No.1 Fault (well Shun 2) is located at the northern margin and Tazhong No.10 Fault (well Zhong 12) at the central part of the Kartarke Uplift which was controlled by the paleoseismic fault.Paleoseismic records meant that the central region of the Tarim Basin might be a Caledonian intraplate rising belt.The Caledonian Movement is manifested in faulting,strong earthquake,uplift and depression in the intraplate of Tarim.更多还原