摘要
重点研究了桂西北地区下石炭统台槽斜坡相和台槽盆地相露头层序地层:在斜坡相识别出4个Ⅰ类和2个Ⅱ类层序界面,以及3个Ⅰ类和2个Ⅱ类沉积层序;台槽盆地相同期地层也可分出5个层序,但这种层序与Vail的沉积层序含意不尽相同.依据生物地层学资料和层序顺序,将这些层序与台地相区沉积层序逐一进行了对比.在此基础上,探讨了早石炭世的海平面变化规律.
The emphasis of this paper is concentrated in the outcrop sequence stratigraphy of the slop and basin of the intraplatform trough during the Early Carboniferous in Northwestern Guangxi. There are two type Ⅱ and four type Ⅰ sequence boundaries in the slop of the intraplatform trough. According to the boundaries, two type Ⅱdepositional sequences, which are in the Yanguan stage, and three type Ⅰ depositional sequences in which two in the Datang stage and one in the Dewu stage, were identified. The sequence of the basin of intraplatform trough is different from the depositional sequence, and called provenance sequence. Five provenance sequences were identified during the Early Carboniferous in Northwestern Guangxi. The correlation between these sequences and the depositional sequences of the plat were given on the basis of biostratigraphic data. At last, the sea level change is discussed during the Early Carboniferous in Northwestern Guangxi.
出处
《地球科学（中国地质大学学报）》
EI
CSCD
北大核心
1994年第5期609-619,T001,共11页
Earth Science-Journal of China University of Geosciences
基金
国家基础性研究重大关键项目"中国古大陆及其边缘层序地层和海平面变化研究"资助
关键词
层序地层
海平面变化
早石炭世
Lower Carboniferous
sequence stratigraphy
slop of intraplatform trough
basin of intraplatform trough
sequence correlation
sea level change.
