塔里木盆地下古生界碳酸盐岩层序及沉积演化特征  

Sequence and sedimentary evolution characteristics of Lower Paleozoic carbonate rock in Tarim Basin

作　　者：谢世文[1,2] 傅恒[2] 张东辉[3] 白晓亮[2] 竹合林[2] 

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东广州510240 [2]成都理工大学油气藏地质与开发工程国家重点实验室,四川成都610059 [3]核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室,北京100029

出　　处：《断块油气田》2013年第3期305-310,共6页Fault-Block Oil & Gas Field

基　　金：中国石化西北分公司基金项目“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-2008-0862)

摘　　要：塔里木盆地震旦纪晚期开始呈现西台东盆的碳酸盐岩沉积格局,至中奥陶世完成下古生界碳酸盐岩台地建设。在区域构造运动研究基础上,利用钻(测)井、露头资料,综合年代地层、岩石地层、生物地层及地震地层,识别盆地下古生界碳酸盐岩层序界面特征,划分出5个二级层序,并分析层序内部沉积演化特征,建立起全盆地层序地层格架。盆地层序格架内的碳酸盐岩台地演化过程中,发育缓坡型、弱镶边型、镶边型以及淹没型4种台地类型。沉积模式归结为4种,即蒸发、局限台地—台缘—斜坡—陆棚—欠补偿盆地模式;局限台地—台缘—斜坡—陆棚—欠补偿盆地模式;开阔台地—台缘—斜坡—陆棚—欠补偿盆地模式;开阔(淹没)台地—台缘—斜坡—(混积)陆棚—浊积盆地模式。The construction of Dower Paleozoic carbonate platform in Tarim Basin began to build at late Sinian, and finished at Middle Ordnvician. Existing data show the sedimentary framework can be considered up as ＂Western Platform, Eastern Basin＂ at that time. On the basis of regional tectonic movement analysis, well drilling, logging and outcrop data are used to identify the sequence boundary of Paleozoic carbonate rocks. And five supersequences are divided, combined with chronostratigraphy, lithostratigraphy, biostratigraphy and seismic stratigraphy. The sedimentary evolution characteristics within whole basin sequence stratigraphic framework display that the evolution of carbonate platform develops four kinds of platform types, which are gentle slope type, weak-rim type, rim type and submerged type. Depositional model can also be attributed to four kinds, including evaporation, limited platform-platform margin-slope-shelf-undercompensation basin mode; limited platform-platform margin-slope- shelf-undereompensation basin mode; open platform-platform margin-slope-shelf-undercompensation basins mode; open（submerged） platform-platform margin-s＇lope-mixed shelf-turbidite basin modes.

关 键 词：层序 碳酸盐岩 台地 沉积演化 下古生界 塔里木盆地 

分 类 号：TE121.3[石油与天然气工程—油气勘探]