| 克拉通边缘前陆盆地动力层序地层学 |
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| 引用本文： | 赵玉光,许效松,刘宝珺.克拉通边缘前陆盆地动力层序地层学[J].沉积与特提斯地质,1997,17(1):1-10. |
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| 作者姓名： | 赵玉光 许效松 刘宝珺 |
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| 作者单位： | 地矿部成都地质矿产研究所 |
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| 基金项目： | “八五”国家基础性研究重大关键项目 |
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| 摘 要： | 通过近几年对层序地层学的深入研究，尤其是对上扬子地台西缘中三叠世拉丁期末和晚三叠世卡尼期周缘前陆盆地层序地层学的研究，提出了动力层序地层学，将边缘前陆盆地由盆缘逆冲断块向克拉通稳定边缘分为Ａ区带和Ｂ区带。
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| 关 键 词： | 克拉通边缘 前陆盆地 层序地层学 动力地层学 |
DYNAMIC SEQUENCE STRATIGRAPHY OF PERIPHERAL FORELAND BASINS |
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| Zhao Yuguang,Xu Xiaosong,Liu Baojun.DYNAMIC SEQUENCE STRATIGRAPHY OF PERIPHERAL FORELAND BASINS[J].Sedimentary Geology and Tethyan Geology,1997,17(1):1-10. |
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| Authors: | Zhao Yuguang Xu Xiaosong Liu Baojun |
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| Institution: | Chengdu Institute of Geology and Mineral Resources, CAGS |
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| Abstract: | The general concepts of dynamic sequence stratigraphy are proposed based on the detailed studies of sequence stratigrapy of the latest Ladinian (late Middle Triassic)and Carnian(early Late Triassic)peripheral foreland basins on the western margin of the Upper Yangtze platform.These peripheral foreland basins may be classified into Zones A and B corresponding to those by Posamentier et al.(1993),where there exist distinctive apparent sea level cycles during a same apparent eustatic period.In Zone A,the rate of subsidence always exceeds the rate of eustatic fall.Consequently,relative sea level rises continuously during a eustatic cycle,albeit at varying rates.The accommodation spaces are chiefly constrained by the overthrusting of the peripheral thrust sheets.In Zone B,the rate of eustatic fall periodically exceeds the rate of subsidence,resulting in an interval of relative sea level fall during a eustatic cycle.It follows that the dynamic sequences in Zone A are made up of the flexural deformation systems tract(FST)and viscoelastic deformation systems tract(VST).The transition from FST to VST reflects the constant increase in the accommodation spaces of the sediments,formation and development of the basin range transformation systems,and architecture of the dynamic sequence stratigraphy of these transformation systems.The results of research in this paper will assist in the basin wide basin analysis and allow the rational assessment of the fluid and solid mineral resources. |
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| Keywords: | cratonic margin peripheral foreland basin dynamic sequence stratigraphy flexural deformation systems tract(FST) viscoelastic deformation systems tract(VST) |
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