| 黔桂泥盆纪层序地层及海平面变化的频幅、速度和相位 |
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| 引用本文： | 龚一鸣,吴诒,杜远生.黔桂泥盆纪层序地层及海平面变化的频幅、速度和相位[J].地球科学,1994,19(5):575-586. |
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| 作者姓名： | 龚一鸣 吴诒 杜远生 |
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| 作者单位： | 中国地质大学地质系 武汉430074
(龚一鸣)，广西地质研究所 南宁530023
(吴诒)，中国地质大学地质系 武汉430074(杜远生) |
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| 基金项目： | 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 |
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| 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.
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| 关 键 词： | 层序地层 海平面变化 泥盆纪 频率 幅度 速度 相位 贵州 广西 |
Devonian Sequence Stratigraphy and Frequences, Amplitudes, Velocities and Phases of Sea-level Changes in Guizhou and Guangxi Provinces |
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| Gong Yiming.Devonian Sequence Stratigraphy and Frequences, Amplitudes, Velocities and Phases of Sea-level Changes in Guizhou and Guangxi Provinces[J].Earth Science-Journal of China University of Geosciences,1994,19(5):575-586. |
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| Authors: | Gong Yiming |
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| Abstract: | 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. |
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| Keywords: | sequence stratigraphy sea -level change Devonian frequency amplitude veloci- ty phase Guizhou Province Guangxi Province |
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