石油与天然气地质 ›› 1993, Vol. 14 ›› Issue (4): 261-271.doi: 10.11743/ogg19930401

• 论文 •    下一篇

湖南石门杨家坪灯影期岩相和沉积环境

朱忠德, 胡明毅, 罗柳忻, 肖传桃, 李相明, 郭成贤, 胡爱梅   

  1. 江汉石油学院地质系 湖北 江陵434102
  • 收稿日期:1993-04-24 出版日期:1993-12-25 发布日期:2012-01-16

LITHOFACIES AND SEDIMENTARY ENVIRONMENTS OF LATE SINIAN DENGYING FORMATION AT YANGJIAPING IN SHIMEN, HUNAN

Zhu Zhongde, Hu Mingyi, Luo Liuxin, Xiao Chuantao, Li Xiangming, Guo Chengxian, Hu Aimei   

  1. Jianghan Petroleum Institute, Jiangling, Hubei
  • Received:1993-04-24 Online:1993-12-25 Published:2012-01-16

PDF (PC)

835

被引次数

7

摘要：

中扬子台地西南缘杨家坪灯影组,可划分为流水成因颗粒岩(G1—G7)、流水生物化学成因藻白云岩(A1—A2)、生物化学成因叠层石粘结岩(S1—S4)、复成因泥晶白云岩及泥岩(M1—M5)、与重力成因有关的滑积岩(B1—B2)、重力流成因的浊积岩等6大类21种岩相。形成潮上-潮间坪上部组合、潮间坪下部组合、潮下组合、滩礁组合、台地前缘斜坡组合、盆地边缘组合。从下向上有规律地形成了三个岩相序列:台地岩相序列属潮坪沉积环境;台地边缘岩相序列属上、下斜坡和浅海陆棚岩相序列。构成一个海侵推进层序。

关键词: 岩相组合, 岩相序列, 白云岩, 沉积环境, 灯影组

Abstract:

A series of dolomites developed in the Dengying Formation at Yangjiaping on the southwest margin of middle Yangzi Platform.The dolomites can be classified into six groups:water current genetic grainstone(G1-G7);water current biochemical genetic algal dolostone(A1-A2);biochemical genetic stromatolithic boundstone(S1-S4);polygenetic micritic dolostone and mud rock(M1-M5);slump rock(B1-B2)related to gravity genesis and turbidite of gravity flow genesis and six kinds of lithofacies associations:supratidal-upper part of intertidal flat;lower part of intertidal flat;subtidal;bank-reef;platform foreslope and basin-margin associations.They constitute three sequences from lower to upper:platform sequence formed in tidal flat environment;platform marginal sequence formed on slope and basin-margin sequence,these lithofacies sequences constitute a com-plete transgression sequence.