四川盆地晚二叠世长兴期古海洋台洼与陆棚边缘礁滩对比研究

段金宝; 唐德海; 李让彬

doi:10.3969/j.issn.1001-909X.2016.03.003

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海洋学研究 ›› 2016, Vol. 34 ›› Issue (3) : 11-18. DOI: 10.3969/j.issn.1001-909X.2016.03.003

研究论文

四川盆地晚二叠世长兴期古海洋台洼与陆棚边缘礁滩对比研究

段金宝, 唐德海, 李让彬

作者信息 +

Comparative study of reef in depression and shelf edge in paleo-ocean of Changxing period Late Permian in Sichuan Basin

DUAN Jin-bao, TANG De-hai, LI Rang-bin

Author information +

文章历史 +

摘要

以长兴组台地边缘礁滩储层发育认知为指导,将三维与二维地震资料相结合,开展台洼边缘礁滩与台地边缘礁滩的沉积背景、发育模式、古地貌的综合对比研究,对四川盆地中部蓬溪-武胜台洼边缘礁滩发育演化特征进行分析,提出了四川盆地东南部泰来、永兴场及义和地区3种台洼边缘礁滩发育模式。受开江-梁平陆棚、峨眉地裂运动以及微古地貌影响,泰来地区以台洼边缘礁滩沉积为主,永兴场地区沉积低能生屑滩,义和地区发育成排生物礁带及点礁。从长兴期整个四川盆地沉积格局分析,蓬溪-武胜台洼边缘礁滩与开江-梁平陆棚边缘礁滩整体沉积格局相似,但台洼边缘生物礁滩纵向发育规模偏小,横向分布面积广泛。

Abstract

Under the guidance of Changxing platform margin reef reservoir cognition, combination of the 3D and 2D seismic data, analysis of the sedimentary background, development model & ancient physiognomy were studied comprehensivly. In this study, evolution characteristics of reef in Pengxi-Wusheng depression edge in the middle of Sichuan Basin were analyzed, and three development models of reef in Tailai, Yongxingchang and Yihe depression edge in southeast of Sichuan Basin were put forward. Affected by North Kaijiang-Liangping shelf, Emei taphrogenesis & micro-palaeogeomorphology, the reef deposited dominately in depression edge in Tailai,low-energy bioclast-shoals deposited in Yongxingchang and row reef belt and patch reef developed in Yihe. Analysis of sedimentary pattern of Sichuan Basin during Changxing period, the deposition patterns of reef in Pengxi-Wusheng depression edge and Kaijiang-Liangping shelf margin were similar. The vertical developments of reef were in small scale, but the horizontal area distributed widely in depression edge.

导出引用

段金宝, 唐德海, 李让彬. 四川盆地晚二叠世长兴期古海洋台洼与陆棚边缘礁滩对比研究[J]. 海洋学研究. 2016, 34(3): 11-18 https://doi.org/10.3969/j.issn.1001-909X.2016.03.003

DUAN Jin-bao, TANG De-hai, LI Rang-bin. Comparative study of reef in depression and shelf edge in paleo-ocean of Changxing period Late Permian in Sichuan Basin[J]. Journal of Marine Sciences. 2016, 34(3): 11-18 https://doi.org/10.3969/j.issn.1001-909X.2016.03.003

中图分类号： P618.13

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