大庆石油地质与开发2017，Vol.36Issue(3)：18-24,7.DOI:10.3969/J.ISSN.1000-3754.2017.03.004
塔东地区寒武纪—奥陶纪碳酸盐岩台缘带迁移与相对海平面变化关系
MIGRATION OF CAMBRIAN-ORDOVICIAN CARBONATE PLATFORM MARGIN AND ITS RELATIONSHIP WITH THE RELATIVE SEA-LEVEL CHANGE IN EAST TARIM BASIN
摘要
Abstract
With the help of the identification and trace of the platform-platform margin boundary in different periods of Cambrian-Ordovician period,the changes of the marginal facies belt were revealed,by means of the identification of the lithologies of the carbonate rock and sedimentary energy,and moreover integrating with the data such as the organic carbon,carbon-oxygen isotopes and so forth,the changed relations of the relative sea level were compiled and mapped,and furthermore the controlling actions of the changes on the migration of the platform margin in different periods were discussed.The study achievements show that the slope facies-basin facies is the main form in East Tarim Basin in Early Cambrian,but the platform margin phase is not well-developed;in Middle and Lower Ordovician,the sea level gradually dropped,the platform type was limited platform,the platform margin was well-developed and migrated to the basin;in Early Ordovician Epoch,the global sea level began to rise,in the sedimentary period of Penglaiba Formation,the platform margin become narrow;for the period in Lower Member of Yingshan Formation,the sea level dropped,the platform type turned into the open one,and moreover its margin began wider;for the period in Upper Member of Yingshan Formation,the rapid water transgression occurred,the sea level began to drop once more,the platform margin facies belt further widened towards the basin internal part;after depositing period of Yijianfang Formation,the platform was submerged with the rapid rise of the sea level.关键词
塔东地区/寒武纪—奥陶纪/碳酸盐岩/台地边缘/海平面变化/沉积演化Key words
East Tarim Basin/Cambrian-Ordovician period/carbonate rock/platform margin/sea level change/sedimentary evolution分类
能源科技引用本文复制引用
闫博,李强,张宏,田晓彬,杨子成..塔东地区寒武纪—奥陶纪碳酸盐岩台缘带迁移与相对海平面变化关系[J].大庆石油地质与开发,2017,36(3):18-24,7.基金项目
国家自然科学基金重点项目“塔里木盆地古生代古构造、古地理演变与成藏效应”(41130422)、国家“973”项目“中国西部叠合盆地深部有效碳酸盐岩储层形成机制与分布预测”(2011CB201100-03). （41130422）
