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hu nan shi men yang jia ping deng ying qi yan xiang he chen ji huan jing
Author(s): 
Pages: 261-271+357
Year: Issue:  4
Journal: Oil & Gas Geology

Keyword:  岩相组合岩相序列白云岩沉积环境灯影组;
Abstract: 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。
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