塔里木盆地巴麦地区寒武—奥陶纪碳酸盐岩台地演化  

CARBONATE PLATFORM EVOLUTION DURING CAMBRIAN-ORDOVICIAN STAGE IN THE BA-MAI AREA OF TARIM BASIN

作　　者：白晓亮[1] 张哨楠[1] 谢世文[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室,四川成都610059

出　　处：《新疆地质》2011年第3期301-305,共5页Xinjiang Geology

基　　金：塔里木盆地下古生界多类型储集体形成与成藏条件研究--塔里木盆地中央隆起带O-Z储集体形成机理;主控因素;有利储集体展布及成藏条件研究(KY-S-2008-086)项目资助

摘　　要：通过对塔里木盆地巴麦地区寒武—奥陶系地震、沉积特征研究,运用地震、钻井岩心资料,对该区层序特征分析,巴麦地区经历了由碳酸盐岩缓坡型台地向镶边斜坡型台地演化,主要控制因素是构造活动和海平面变化.早—中寒武世为缓坡型台地演化阶段,由于海平面频繁升降变化,台地边缘经历3次迁移;晚寒武世该区处于拉张环境形成被动大陆边缘,海平面开始上升,发育镶边斜坡型台地,海平面相对上升速率小于沉积物供应速率,台地边缘向盆地方向迁移;早奥陶世,海平面上升速率加快,大于沉积速率,台地以追补型叠加形式向台地方向迁移.By Cambrian-Ordovician sedimentary and seismic characteristics analysis in Ba-Mai aera of Tarim Basin. Though the use of seismic,drilling core data and sequence characteristics,The results show that those area experienced evolution of the ramp-type carbonate platform slope to the edge of platform-type.The main control factor is the tectonic activity and sea level changes, the evolution of ramp-type platform in Early-Middle Cambrian, due to frequent movements of sea level changes, platform margin has experienced three migration; Late Cambrian extensional area in the formation of passive continental margin environment, sea level began to rise,development platform edge slope type, Relative sea-level rise rate is less than the supply rate of sediment, Platform migration towards the basin edge; Early Ordovician sea-level rise rate is accelerated ,sea level rise rate is greater than the deposition rate, platform type stacking patterns to make up the direction of migration to the platform.

关 键 词：塔里木 寒武-奥陶纪 缓坡型台地 镶边型台地 台地迁移 

分 类 号：P618.13[天文地球—矿床学]