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西湖凹陷古近系花港组风暴沉积研究

汪俊伟, 刘江艳, 侯国伟, 何苗

汪俊伟, 刘江艳, 侯国伟, 何苗. 西湖凹陷古近系花港组风暴沉积研究[J]. 地质与资源, 2018, 27(4): 360-365,395.
引用本文: 汪俊伟, 刘江艳, 侯国伟, 何苗. 西湖凹陷古近系花港组风暴沉积研究[J]. 地质与资源, 2018, 27(4): 360-365,395.
WANG Jun-wei, LIU Jiang-yan, HOU Guo-wei, HE Miao. STUDY ON THE STORM DEPOSITS OF PALEOGENE HUAGANG FORMATION IN XIHU SAG[J]. Geology and Resources, 2018, 27(4): 360-365,395.
Citation: WANG Jun-wei, LIU Jiang-yan, HOU Guo-wei, HE Miao. STUDY ON THE STORM DEPOSITS OF PALEOGENE HUAGANG FORMATION IN XIHU SAG[J]. Geology and Resources, 2018, 27(4): 360-365,395.

西湖凹陷古近系花港组风暴沉积研究

基金项目: 

国家"十三五"重大科技专项"深层优势储层形成条件及地质预测技术"(编号2016ZX05027-02-007)

详细信息
    作者简介:

    汪俊伟(1990-),男,硕士研究生,沉积学与石油地质方向,通信地址 湖北省武汉市蔡甸区大学路111号,E-mail//junwei0308@sina.com

    通讯作者:

    刘江艳(1988-),女,博士研究生,现主要从事储层沉积学、层序地层学方面的研究,通信地址 湖北省武汉市蔡甸区大学路111号,E-mail//jiangyan19880312@163.com

  • 中图分类号: P512.2

STUDY ON THE STORM DEPOSITS OF PALEOGENE HUAGANG FORMATION IN XIHU SAG

  • 摘要: 通过岩心观察,发现花港组典型的风暴沉积构造主要包括风暴侵蚀形成的渠模、冲刷沟槽、冲刷面,风暴涡流形成的撕扯构造、菊花状构造,风暴重力流形成的粒序层理,风暴浪形成的丘状交错层理、浪成沙纹层理、平行层理,同生变形构造及生物逃逸构造.运用岩石相组合分析的方法,发现花港组风暴垂向沉积序列发育不完整.其理想的序列由A~G共7段构成。根据花港组垂向沉积序列类型、沉积构造特点总结出了A+B+G、A+B+C、A+B+D、B+C+D、C+E+G、E+F+G等6种风暴沉积序列和原地风暴岩、近源风暴岩和远源风暴岩3种风暴岩类型.
    Abstract: Based on the core observation, it is found that the typical storm-generated sedimentary structures of Huagang Formation mainly include gutter casts, scour holes and scour surfaces by erosion, tear and chrysanthemum-like structures by storm eddy, graded bedding by storm gravity flow, hummocky cross stratification, wave ripples and parallel bedding by storm wave, as well as syngenetic deformation and escape structures. Through analyzing the lithofacies combination, the results show that the vertical storm sedimentary sequences are incompletely developed in comparison to the ideal sequences which consist of bottom-up seven layers from A to G. Six sequences of storm deposits, namely A+B+G, A+B+C, A+B+D, B+C+D, C+E+G and E+F+G, and three types of tempestite(in-situ, proximal and distal) are summed up on the basis of the vertical sedimentary sequences and structure features.
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出版历程
  • 收稿日期:  2017-10-10
  • 修回日期:  2018-02-01
  • 网络出版日期:  2022-12-29
  • 发布日期:  2018-08-30

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