摘要
我国东部大多数中新生代含煤和含油气盆地是陆相断陷盆地,其层序形成和演化主要受控于幕式构造作用。笔者通过典型断陷盆地层序地层的研究,根据构造沉降及其可容空间变化特点,提出了拉张型、挤压型、走滑-伸展型和热沉降型四种层序样式,并总结了各种层序中体系域构成特点,概括了多幕裂陷型、断坳转化型和走滑-伸展型三种层序地层格架模式。
Most Mesozoic-Cenozoic coal- and petroleum-bearing basins in eastern China are continental down-faulted basins, in which the formation and evolution of the sequence are mainly controlled by episodic tectonism. Based on a study of the sequence stratigraphy of some typical down-faulted basins, four sequence patterns have been identified according to the features of tectonic subsidence and its accomondation space; extensional (or tenso-shear), compressional (or compresso-shear), strike-slip-extensional and thermal subsidence patterns, each of which has its own characteristics of internal composition of system tracts. According to the characteristics of rift-filling sequence, three types of sequence stratigraphic framework have been recognized: polyphase rifting type, the type of transformation from rifting to depression, and strike slip-extensional type.
出处
《地质论评》
CAS
CSCD
北大核心
1996年第3期239-244,共6页
Geological Review
基金
国家自然科学基金(编号49302030)
地质矿产部重大基础项目(编号8502204)
关键词
断陷盆地
层序地层
层序地层格架
构造作用
down-faulted basin, sequence stratigraphic analysis, epsodic tectonism, sequence stratigraphic framework
