21世纪初期层序地层学发展的新方向  

NEW TRENDS OF SEQUENCE-STRATIGRAPHY IN THE EARLY 21st CENTURY

作　　者：郭荣涛[1] 陈留勤[2] 霍荣[1] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]东华理工大学地球科学学院,江西南昌330013

出　　处：《地层学杂志》2012年第4期747-754,共8页Journal of Stratigraphy

基　　金：国家自然科学基金项目(No.40472065);中国石油化工股份有限公司海相前瞻性项目(No.C0800-07-ZS-164)

摘　　要：层序地层学是在年代格架中划分和对比沉积岩的一门分支学科。尽管使用广泛,但是由于多种模式并存,术语使用缺乏规范,所以没有纳入任何地层规范和指南。鉴于此,以Catuneanu为首的地质学家致力于将层序地层学标准化,并且把层序重新定义为"在可容纳空间或沉积物供给变化的一个完整旋回中所形成的地层序列",提出了非依赖模式型(model-independent approach)的标准化工作流程,强调层序地层学的重点是体系域和层序地层界面,并且根据可使用资料的质量选择最佳层序模式(如沉积层序模式、成因层序模式)。层序地层学的标准化不论是否可以引领层序地层学进入国际地层规范和指南,这对于在复杂而不完整的岩石记录中寻求某种普遍规律都是一种有益的尝试,并且可以为今后的研究提供重要线索。Sequence-stratigraphy is an independent discipline that emphasizes the division and correlation of sedimentary rocks in a chronological framework. Despite its wide use, sequence stratigraphy has yet to be included in any stratigraphic code or guide, largely because of competing stratigraphie models and the lack of standardized terms. In consideration of this, some geologists, under the leadership and guidance of Octavian Catuneanu, have begun to develop standardized sequence-stratigraphy, and have redefined sequence as ＂a succession of strata deposited during a full cycle of change in accommodation or sediment supply＂. They also proposed a model-independent work flow., a standardized approach focusing on system tracts and sequence stratigraphic surfaces, with the choice of stratigraphic models based on available data. Regardless of whether the standardization can lead to a stratigraphic code or guide for sequence-stratigraphy, this is an endeavor to search a common ground in the complex and incomplete sedimentary records, and can provide significant clues for future study.

关 键 词：层序地层学 层序模式 标准化 研究进展 

分 类 号：P618.130.2[天文地球—矿床学]