DEPOSITIONAL SYSTEM AND PALEOENVIRONMENTAL EVOLUTION IN LATE JURASSIC IN JIANMENGUAN AREA, SICHUAN PROVINCE, CHINA
Xu Shiqiu
She Jiwan
Abstract：Late Jurassic is an important period of Longmenshan foreland basin development. It is of great significance to study its depositional system and paleoenvironmental evolution. According to comparative sedimentology and the study of sedimentary sequences and cycles, Upper Jurassic in the study area can be divided into lake, delta, alluvial fan and fluvial depositional systems. The depositional setting and evolution analyses reveal that Longmenshan nappe structure belt should be responsible for the paleoenvironmental evolution and depositional system disposition of the study area in Late Jurassic. The research results show that the main provinces come from Longmengshan mountain in the northwestern part of the study area.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 235-240 )