北黄海盆地构造演化特征分析  

Characteristics of Structural Evolution in North Yellow Sea Basin

作　　者：李文勇[1] 李东旭[1] 夏斌[2] 白志琳[3] 王嘹亮[3] 陈玲[3] 曹代勇[4] 王信国[4] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国科学院广州地球化学研究所,广东广州510640 [3]国土资源部广州海洋地质调查局,广东广州510760 [4]中国矿业大学资源与安全工程学院,北京100083

出　　处：《现代地质》2006年第2期268-276,共9页Geoscience

摘　　要：依据最新油气资源调查资料,在简述北黄海盆地区域构造特征的基础上,重点分析了盆地的沉降史与构造演化特征。研究表明:(1)北黄海盆地的基本沉降曲线型式为7段折线状,其中晚侏罗世、早白垩世、始新世、渐新世、新近纪为曲线下降段,代表盆地5幕较明显的沉降;晚白垩世—古新世以及中新世早期为曲线上升段,反映盆地的抬升剥蚀。(2)盆地沉降作用自中生代至新生代总体由东向西迁移,东部坳陷以中生代沉降作用最为显著,中部坳陷主沉降期为始新世,而西部坳陷的快速沉降主要发生在始新世,并一直持续到渐新世。(3)盆地构造演化大致可划分为中生代断陷盆地、古近纪叠加断陷盆地以及新近纪坳陷盆地等3大发展阶段,其中,中生代断陷盆地发育阶段是北黄海盆地油气勘探研究的重点。Depending on the data of the new oil and gas resources survey, the subsidence history and structural evolution of North Yellow Sea basin are emphatically analyzed in this paper based on the brief discussion on the characteristics of tectonic geology of North Yellow Sea basin. The study results can be summerized as following aspects ： （ 1 ） The basic settling curve of this basin was broken-line shape of seven sections in which Upper Jurassic, Lower Cretaceous, Eocene, Oligocene and Neogene corresponded with the decline ones representing five episodic clear subsidences of this basin, Late Cretaceous to Paleocene and Early Miocene corresponded with the rising ones reflecting the uplift and denudation of this basin. （2） The subsidence of this basin migrated from the east to the west, from Mesozoic to Cenozoic. East depression underwent the most remarkable subsidence in Mesozoic. The main subsidence epoch of middle depression was in Eocene, and the rapid subsidence in west depression occurred in Eocene to Oligocene. （3） The structural evolution of this basin can be approximately divided into three development stages： Mesozoic fault basin stage, Paleogene superimposed fault basin stage and Neogene down-warped basin stage, in which the Mesozoic fault basin developed stage was the study emphasis for oil and gas exploration of North Yellow Sea basin.

关 键 词：构造演化 沉降史 北黄海盆地 中生代 

分 类 号：TE121.2[石油与天然气工程—油气勘探]