收稿日期: 2003-06-20
修回日期: 2003-07-01
网络出版日期: 2003-12-20
SEQUNCE TYPES AND SEQUNCE STRATIGRAPHIC MODELS OF CHAGANFAULT-DEPRESSED STAGNANT LACUSTRINE DEPRESSION, YIN-E BASIN
Received date: 2003-06-20
Revised date: 2003-07-01
Online published: 2003-12-20
郭彦如 . 银额盆地查干断陷闭流湖盆层序类型与层序地层模式[J]. 天然气地球科学, 2003 , 14(6) : 448 -452 . DOI: 10.11764/j.issn.1672-1926.2003.06.448
A research field of lacustrine sequence stratigraphy is to establish the sequence stratigraphic models for different geological setting in different lacustrine basins. Most researches concentrate on the sequence stratigraphic models of fault-depressed flowing lacustrine basins, but less researches are on fault-depressed stagnant lacustrine basins. In this paper, taking the Early Cretaceous fault-de pressed stagnant lacustrine basin on Chagan depression as an example, sedimentary characteristics and evolution were analyzed; the sequence stratigraphic models and characteristics of different types of sequences were summarized; the two types of sequence (the climate type, and the compound type of fault-depression and climate) were put forward; and the sequence stratigraphic models of different sedimentary evolution phases were concluded. Elaborate research indicates that the sedimentary evolution of the Chagan fault-depressed stagnant lacustrine basin have three evolution phases: the early stage of fault-depression, themain fault-depressed stage and the depressed with faulted stage. The sequence stratigraphic models in the early stage of fault-depression and the main fault-depressed stage were made of the compound type of fault-depression and climate and those in the depressed with faulted stage were made of the type of climate.
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