摘要
通过对广西六景、贵州独山和乌当泥盆系剖面层序、体系域、副层序及作用相和环境相的系统研究,识别出2种层序界面;3种海进过程和10种层序、体系域和相对海面变化.并发现,阶跃型高幅海平面变化形成的层序界面、层序、体系域、副层序和旋回层往往可在大区域追踪对比;剖面作用相、环境相分析是露头层序地层和相对海平面变化研究的基础,剖面上层序、体系域及其反映的相对海平面变化的频率、幅度、速度和相位研究对层序界面、层序、体系域、副层序和旋回层的空间延拓、等时追踪对比和驱动机制的成因解释有重要的指导、预测作用.
Having studied the Devonian sequences, systems tracts, parasequences, process-fades and environment - fades of the Liujing section, Guangxi and the Dushan and Wudang sections, Guizhou systematically, the authors recognize two types of the sequence boundary: transgressive surfaces with and without exposure on continent; three types of transgressive processes: stairstep, gradual slow and fast transgression; ten kinds of sequences, systems tracts and relative sea-level changes. The sequence boundary, sequence, systems tract, parasequence and cyclothem formed by the sea-level changes of a stairstep, high amplitude can be widely traded and correlated. Both process - fades and environment-fades analysis of a stratigraphic section are the basis for the study of outcrop-sequence stratigraphy and relative sea-level changes. It is an important guiding and forecasting to study the frequency, amplitude, velocity and phase of relative sea-level changes indicated by a sedimentary sequence and systems tract in the extension and synchronous trace and correlation of the sequence boundary, sequence, systems tract, parasequence and cyclothem, and a genetic expounding of a dynamic mechanism of a sedimentary sequence.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1994年第5期575-586,共12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
泥盆纪
频率
sequence stratigraphy, sea -level change, Devonian, frequency, amplitude, veloci- ty, phase, Guizhou Province, Guangxi Province.
