燕山长城纪沉积层序的形成  

Sedimentary sequences of Changcheng Period in Yanshan of North China

作　　者：刘为付[1] 朱筱敏[2] 于晓玲[3] 孟祥化[4] 葛铭[4] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318 [2]石油大学资源与信息学院,北京102249 [3]黑龙江省哈大公路管理处安达管理所,黑龙江安达151400 [4]中国地质大学沉积盆地研究所,北京100083

出　　处：《大庆石油学院学报》2004年第6期4-7,共4页Journal of Daqing Petroleum Institute

基　　金：国际地质对比计划项目(IGCP447);国家自然科学基金资助项目(40172043)

摘　　要：燕山长城纪拗拉谷是典型的中元古代大陆早期破裂形成的半地堑裂谷盆地,华北长城纪代表早元古代原地台形成后大陆裂解的第1个巨旋回.从层序、海平面变化及古地理等方面研究,长城纪均表现出沉积作用形成发育过程的阶段性和突发性的周期;沉积层序可明显划分出2个超大旋回层序,第1个由常州沟组、串岭沟组和团山子组组成,相当于燕山早期裂谷阶段,第2个由大红峪组和高于庄组组成,相当于中晚期裂谷阶段;每一个超旋回层序呈现断陷充填期、非补偿期及构造衰退期的演化特征.Changcheng period in Yanshan is a type rift basin of half-graben in Mesoproterozoic. The sedimentary sequence is divided two sedimentary sequences formation. The first sedimentary sequences of Changcheng period in Yanshan are constituted by Changzhougu, Chualinggou and Tuanshanzi formation equality early rift stage and second sedimentary sequences are constituted by Dahongyn and Gaoyuzhuang formation equality middle to late rift stage. The contact surface between the lower Changzhougu formation and the upper Archean is angular unconformity. The Changzhougu formation is divided into three cyclic sequences, and is mainly composed of the clastic rock of the terrestrial faces to the littoral-neritic marine faces deposits. The Chualinggou formation, which is the surface of the lithological mutation with the contact surface between the cyclic Sequence formations, represents the alternating deposit evolution between lagoon environment and open marine environment. The Tuanshanzi formation,overlaped hiatus in the lower and offlap hiatus in the upper,is divided into two cyclic sequence formations. The Dahongyu cyclic sequence formation is divided into three cyclic sequence formations. The Gaoyuzhuang formation, representing the carbonic deposits of the littoral-neritic marine, is divided into four cyclic sequence formations. From these sequences, verity of sea level, contemporaneous fault action, palaeogeography and so on, sedimentation of Changcheng Period develops the period of episodic subsidence and salutatory evolution. Changcheng Period as the maximum sequences period equals the period of double galaxy years, representing first super-mega-cyclic periods of an early Proterozoic of after forming Huaba original platform, with relation global swelling period of the early-middle Proterozoic.

关 键 词：燕山 长城纪 旋回层序 沉积环境 

分 类 号：TE121.1[石油与天然气工程—油气勘探]