Sequence Characteristics of Foreland Basin and Its Difference from Those of Other Types of Basin

• Published in: Journal of earth science (Wuhan, China) Vol. 22; no. 6; pp. 737 - 754
• Main Author: 纪友亮 潘春孚 周勇 朱如凯 高志勇 杨杰琦 于刚
• Format: Journal Article
• Language: English
• Published: China University of Geosciences China University of Geosciences 01.12.2011; Springer Nature B.V
• Subjects: Accommodation; Architecture; Basins; Belts; Biogeosciences; Continental margins; Cratons; Earth and Environmental Science; Earth science; Earth Sciences; Fluctuation; Fluctuations; Foothills; Geochemistry; Geology; Geotechnical Engineering & Applied Earth Sciences; Lakes; Mathematical models; Plate tectonics; Sag; Seismology; Stratigraphy; 前陆盆地; 坳陷盆地; 层序地层格架; 居住空间; 序列特征; 控制因素; 断陷盆地; 类型; China, People's Rep., Xinjiang, Junggar; stacking pattern; faulted basin; sedimentary response to tectonism; pattern differentiation; sequence architecture; foreland basin; sag basin
• ISSN: 1674-487X; 1867-111X
• DOI: 10.1007/s12583-011-0224-3

Based on the case history study of sequence stratigraphic framework,sequence model,and the controlling factors on sequence formation in the southern Junggar foreland basin,a contrasting comparison of the characteristics among the foreland basin,the faulted basin,and the sag basin is made in the aspects of sequence architecture,filling style,the controlling factors on sequence development,the migrations of basin center and depocenter,etc..The current study results show that there are major differences and these are documented as follows.（1） The accommodation space in foreland basin is mainly created by the subsidence caused by thrusting and napping in the foothill belt,resulting in progradational-dominated parasequence sets in the foothill area and retrogradational parasequence sets in the ramp region.（2） The accommodation space in an open-lake system in faulted basin is mainly created by the activities of the basin margin faults;thus,tectonic sequences are formed.However,in the closed-lake system,the subaqueous accommodation is mainly controlled by climatic-influenced lake-level fluctuations,and climatic sequence is formed.（3） In sag basin,a closed-lake system is easily formed due to its generation often within the cratons and isolation from the sea,and its accommodation space creation is mainly controlled by climatic lake-level fluctuations;thus,the sequence architecture in sag basin is similar to that formed on the passive continental margin.