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应用周边露头资料、盆内钻井资料及地球物理资料,以板块构造理论为基础,以构造演化阶段论和活动论为指导,采用构造解析法对渤海湾地区中西部中生代各期构造变形场、构造应力场及沉积盆地进行了研究。研究结果表明,渤海湾盆地中西部中生界可划分为4个构造层:印支期构造层、燕山早期构造层、燕山中期构造层及燕山晚期构造层。成盆期主要经历了早中三叠世大型陆内坳陷盆地、早中侏罗世河湖沼相中小型坳陷盆地、晚侏罗世—早白垩世陆内小型裂陷盆地及晚白垩世隆起背景上形成的小型坳陷盆地等。造山期经历了印支晚期(T3)准造山作用、燕山早期(J2末)强烈造山作用及燕山晚期(K2)准造山作用3个演化阶段。中生代构造样式以挤压褶皱、逆冲构造及张性正断裂为主,其次发育横向调节构造。燕山运动早期对本区作用最大,奠定了本区北北东向的构造体系。中生代构造演化型式与欧亚板块东部的伊佐奈畸板块的相对运动方式密切相关
Based on tectonic theory and tectonic evolution stage theory and activity theory, tectonic interpretation method is used to analyze the tectonic deformation field and structure of Meso-Cenozoic in the central and western Bohai Bay region by using the outcrop data in the basin, drilling data and geophysical data in the basin. Stress field and sedimentary basin. The results show that the Mesozoic and Mesozoic in the central and western Bohai Bay Basin can be divided into four structural layers: the Indosinian tectonic layer, the early Yanshan tectonic layer, the middle Yanshan tectonic layer and the late Yanshan tectonic layer. The basin-forming period mainly experienced large-scale early-Middle Triassic intra-continental depression basin, early-middle Jurassic lacustrine facies and small-scale depression basin, Late Jurassic-Early Cretaceous intracontinental small-scale rift basin and Late Cretaceous uplift background On the formation of small depression basin. The orogeny experienced three stages of quasi-orogeny in late Indosin (T3), intense orogeny in early Yanshanian (late J2) and quasi-orogeny in late Yanshan (K2). The Mesozoic tectonic styles are mainly composed of extrusion folds, thrust structures and Zhangzheng normal faults, followed by the lateral adjustment structure. In the early Yanshan movement, it played the most important role in this area, laying a north-north-east structural system in this area. The Mesozoic tectonic evolution patterns are closely related to the relative movement patterns of the Izodani block in the eastern Eurasian plate