广东三水盆地白垩纪岩相古地理特征及演化  

The lithofacies-paleogeographic character and evolution of the Sanshui basin during Cretaceous in Guangdong,China

作　　者：侯明才[1] 陈洪德[1] 田景春[1] 万梨[1] 

机构地区：[1]成都理工大学沉积地质研究院,成都610059

出　　处：《成都理工大学学报（自然科学版）》2007年第3期238-244,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：四川省重点学科"构造地质学"建设基金资助项目(SZD0408)

摘　　要：根据大量的区域地质、钻井、野外露头等资料,对广东三水盆地白垩纪地层进行了构造层序研究,划分出一个盆地充填层序,两个构造层序和4个层序;在构造层序研究的基础上,采用压缩法和瞬时作图法,以层序为编图单元,编制了三水盆地白垩纪层序岩相古地理图,系统地阐述了三水盆地白垩纪不同时期的岩相古地理特征;根据不同时期的岩相古地理展布特征,将白垩纪三水盆地的沉积充填分为早白垩世的底部粗碎屑进积和晚白垩世的首次湖泛两个演化阶段。This paper discusses the structural sequence of the Sanshui basin during Cretaceous and determined one basin-filling sequence, two structural sequences and four sequences by dwelling on the regional geological data, well drillings and field outcrops and referring to the previous study of chronostratigraphy and biostratigraphy. On this basis, it compiles four sequence-based lithofacies paleogeographic maps of the Sanshui basin during Cretaceous by taking sequence as a mapping unit and using compressible and instantaneous mapping methods. Then, it systematically demonstrates the lithofacies paleogeographic characteristics of the Sanshui basin in different periods and divides the depositional filling into two evolution stages, that is, the basal coarse clastic progradation in the early and the initial flooding in the late.

关 键 词：三水盆地 白垩纪 构造层序 层序岩相古地理 演化阶段 

分 类 号：TE121.1[石油与天然气工程—油气勘探] P531[天文地球—古生物学与地层学]