华北东部侏罗—白垩纪盆地演化及其对构造运动的响应  

Evolution of the Jurassic—Cretaceous basins in the eastern part of North China and its response to the tectonic movement

作　　者：彭兆蒙[1] 彭仕宓[1] 吴智平[2] 李伟[2] 孔旭[1] 

机构地区：[1]中国石油大学(北京)资源与信息学院,北京102249 [2]中国石油大学(华东)地球资源与信息学院,山东东营257061

出　　处：《西安石油大学学报（自然科学版）》2009年第5期7-12,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家油气专项"华北前第三系油气资源战略调查及评价"(编号:XQ-2004-03)

摘　　要：华北东部侏罗—白垩纪盆地演化的阶段性反映了燕山运动的幕式过程.在华北东部侏罗—白垩纪残留盆地分布、沉积充填特征研究的基础上,结合区域构造演化背景,恢复了晚中生代华北东部的原型盆地格局.结果表明:早—中侏罗世华北东部处于由古亚洲构造域向滨太平洋构造域演化的过渡阶段,早期发育一些小的山间沉积盆地群,表现为对印支期造成的低洼地区的充填,晚期表现为披覆式沉积;晚侏罗世进入中生代重要的构造转折期,华北东部构造演化受控于西太平洋区板块活动,晚侏罗—早白垩世伸展断陷盆地发育,盆地的展布具有明显的分区性,沉积充填受北东—北北东向和北西—北西西向断裂系统控制;晚白垩世,郯庐断裂带以西的华北东部地区持续隆升,仅局部洼陷有红色碎屑沉积充填.The stages of the basin sedimentation-filling from Jurassic to Cretaceous in the studied area is a response to the episodic process of Yanshan Movement.Based on the research of the distribution of the residual basins,the features of the sediment filling and the evolution of the regional structures,the pattern of the late Mesozoic prototype basins in the eastern part of North China are recovered.It is shown that,from Early to Middle Jurassic,the eastern part pf North China is in the transitional stage of the evolution from Paleo-Asian system to Paleo-Pacific system.Some small intermountain basins develop in Bobai Bay area in early period,they fill the lowland areas formed in indo-chinese epoch and they form drape deposits in the late period.gentle fold at the early stage and widely distributed at the late stage.Tectoninc transition from Paleo-Asian system to Paleo-Pacific system happens in the late Jurassic,which leads to the formation of large-scale rifts or faulted basin in Bohai Bay area.Although there are different kinds of faulted basins in Bohai Bay area from Late Jurassic to Early Cretaceous,the basin distribution and the sediment filling are controlled by NW/NWW-trending and NE/NNE-trending fault systems.In the late Cretaceous,the areas in the west of Tancheng-Lujiang fault zone are uplifted and denuded,and red fluvial-lacustrine sediments only in a few of basins.

关 键 词：华北东部 侏罗-白垩纪 盆地演化 燕山运动 

分 类 号：TE121.3[石油与天然气工程—油气勘探] P534.5[天文地球—古生物学与地层学]