| 摘要: |
| 以海平面变化为基础的层序地层学理论在研究陆相盆地中遇到了困难;地层基准面变化在解释地层层序成因和地层层序划分中发挥了重要作用。本文通过基准面变化过程中地层层序的形成和演化的研究,来建立基准面变化曲线和地层成因分析,划分地层层序,从而建立层序地层格架。以基准面变化曲线为基础的层序地层学方法在塔里木盆地东南部露头剖面中成功地解释了三叠系一侏罗系陆相层序,并可与塔里木盆地北部地层层序进行对比。 |
| 关键词: 基准面变化 层序地层 塔里木盆地 三叠系—侏罗系 |
| DOI： |
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| Base-level changes and nonmarine sequence stratigraphy:an example from the Tarim Basin,Xinjiang |
| Wang Longzhang, Liu Haixing |
(1 Chengdu Institute of Geology and Mineral Resources, CAGS;
2 Northwest China Bureau of Petroleum) |
| Abstract: |
| Base-level changes are successfully employed in the genetic explanation and division of stratigarphic sequences,while the theories of sequence stratigarphy are difficult to be ap-plied to nonmarine basins based on sea-level changes.This paper discusses the formation and development of the stratigraphic sequences during the base-level evolution.The stratigraphic sequences have been classified and the sequence stratigraphic frameworks erected with the aid of the construction of the base-level curves and the analysis of the ge-netic stratigraphy.The theories of sequence stratigraphy based on the base-level changes are successfully used for the explanation of the Triassic——Jurassic nonmarine sequences within the outcrop section in the southeastern part of the Tarim Basin,Xinjiang which can be correlated with the stratigraphic sequences in the northern part of the basin. |
| Key words: base-level change sequence stratigraphy Tarim Basin Triassic-Jurassic |
