四川盆地下寒武统龙王庙组岩相古地理特征和沉积模式OA北大核心CSCDCSTPCD
Lithofacies Paleogeography and Sedimentary Model of Lower Cambrian Longwangmiao Formation in Sichuan Basin
在系统吸收前人研究成果的基础上，通过露头、岩心和薄片观察，结合测井和区域地质资料，探讨了四川盆地龙王庙组岩相古地理特征及沉积模式。研究认为：四川盆地及周缘在寒武系龙王庙组沉积时期为远端变陡的缓坡环境，自西向东依次发育近岸潮坪—内缓坡—中缓坡—外缓坡相带。其中四川盆地主体位于内缓坡，它又可划分为浅水内缓坡、局限内缓坡和开阔内缓坡三个古地理环境，发育颗粒滩、滩间海、正常潟湖、局限潟湖和潮坪等5种亚相。在纵向上龙王庙组沉积期经历了上下两个海侵—海退的短…查看全部>>
Cambrian Longwangmiao Formation was in the sedimentary environment of distally-steepening slope in Sichuan Basin and its peripheral area, in which nearshore tidal flat, internal slope, middle ramp and external ramp developed successively from west to east. Sichuan Basin was mainly located in the internal slope. The internal slope can be further divided into shallow internal slope, restricted internal slope and open internal slope, in which five subfacies dev…查看全部>>
王龙;沈安江;陈宇航;苏旺
中国石油勘探开发研究院 中国石油杭州地质研究院中国石油杭州地质研究院 中国石油天然气集团公司碳酸盐岩储层重点实验室
能源科技
四川盆地龙王庙组碳酸盐台地岩相古地理沉积模式
Lower CambrianLongwangmiao Fm.Carbonate platformLithofacies paleogeographySedimentary modelSichuan Basin
《海相油气地质》 2016 (3)
13-21,9
本文受中国石油集团科技重大专项“深层油气勘探开发关键技术研究”(编号2014E-32-02)资助
评论