摘要
鄂西神农架群石槽河组以广泛发育同生或准同生白云岩为特征,通过岩石学研究将其划分为7种类型,结合本区岩相标志和沉积环境分析建立了7种岩相类型.在区域上,以石槽河期早时的沉积格局和岩相特征为依据,首次划分出4个沉积相带,初步查明了神农架地区中元古界石槽河组的岩石特征、沉积环境及古地理轮廓.
Shicaohe Formation of Shennongjia Group in west Hubei is characterized by widely developed contemporaneous or penecontemporaneous dolomite. Dolomites in this area are divided into seven types based on the study of petrology and seven petrographical types are further established by combination of petrographical marks. Four sedimentary facies belt are suggested for the first time in this area according to sedimentary pattern and petrographical characters of Early Shicaohe Stage. All this has clarified the petrological characters and sedimentary environment and outline of paleogeography in Shennongjia area.
出处
《华南地质与矿产》
CAS
1997年第2期54-61,共8页
Geology and Mineral Resources of South China
基金
地矿部定向基金项目研究成果
关键词
中元古界
岩石
沉积相
石槽河组
神农架地区
middle Proterozoic petrological and petrographical character Shicaohe Formation Shennongjia area, Hubei
