江汉盐湖盆地沉积特征  

CHARACTERISTICS OF THE JIANGHAN SALT LAKE

作　　者：卢明国[1] 陈凤玲[2] 刘俊[1] 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]中石化江汉油田分公司研究院,潜江433124

出　　处：《中国矿业》2007年第4期102-104,共3页China Mining Magazine

基　　金：中国石油化工股份有限公司攻关科研项目(ZKDO5O1O38)

摘　　要：江汉盐湖盆地是我国内陆独一无二的高盐度盐湖沉积盆地。本文在分析其岩性、韵律和沉积相分布特征的基础上,探讨了江汉盐湖沉积环境、水介质性质、沉积作用和沉积方式,总结了江汉盐湖的沉积特征。研究表明:江汉盐湖是在干、湿频繁交替的古气候条件下,在高盐度、强蒸发、还原-强还原水体中,由北部单向碎屑物源及盆地周缘卤水与盐源补给形成的盐系沉积地层,为一套由碎屑岩、碳酸盐岩和蒸发岩组成的内陆盐湖沉积建造。Jianghan Salt Basin is a unique high-salinity inland salt lake basin in our country. Based on the lithology, rhythm and sedimentary system of the deposits, the sedimentary setting, hydraulic medium,sedimentation and sedimentary model are discussed, and the sedimentary characteristics of the Jianghan salt lake are concluded. This study suggests that the Jianghan salt lake is a series of salt strata deposits resulted from the northern unilateral elastic source and supplies of brine and salt sources along the basin margin, in an high-salinity, violent-evaporation, reduction to high reduction water under a frequently arid-humid alternation climate. It is a salt lake sedimentary system consisted of clastic rock, carbonate rock and evaporire rock.

关 键 词：岩性 韵律 沉积相 盐湖 江汉盆地 

分 类 号：P534.5[天文地球—古生物学与地层学] P534.6[天文地球—地质学]