CAJ | 학술논문

晚侏罗世是龙门山前陆盆地演化的关键时期，因而沉积体系与古环境演化研究具有重要意义.运用比较沉积学的方法，通过对沉积序列与旋回的详细研究，将研究区晚侏罗世沉积体系分为湖泊沉积体系、三角洲沉积体系、冲积扇沉积体系以及河流沉积体系；基于沉积背景和演化的分析，确定龙门山推覆构造带是研究区晚侏罗世古环境演化和沉积体系空间配置的控制因素；依据古流和物源分析，确定西北部的龙门山是本区主要物源区.
만주라세시룡문산전륙분지연화적관건시기，인이침적체계여고배경연화연구구유중요의의.운용비교침적학적방법，통과대침적서렬여선회적상세연구，장연구구만주라세침적체계분위호박침적체계、삼각주침적체계、충적선침적체계이급하류침적체계；기우침적배경화연화적분석，학정룡문산추복구조대시연구구만주라세고배경연화화침적체계공간배치적공제인소；의거고류화물원분석，학정서북부적룡문산시본구주요물원구.
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.