摘要
在重庆市东南部,南华系只分布在秀山县和酉阳县,可细分为3个组:南沱组、大塘坡组和千子门组。其中南沱组和千子门组为冰碛层,沉积环境为底磧相、冰内河道相、冰前冰河相、冰前海湾泻湖相和冰前滨海相;大塘坡组为海湾泻湖相沉积,形成了大型锰矿床。区内南华纪气候具备典型的三段式结构特征:上、下两个冰期,中间夹一个间冰期,亦即南沱冰期、大塘坡间冰期和千子门冰期。
In southeast Chongqing City,the Nanhuan System is only found in Xiushan and Youyang County and can be divided into three Formations：Nantuo Formations,Datangpo Formations and Qianzimen Formations,of which Nantuo Formations and Qianzimen Formations are Drift sheet,and their sedimentary environment is glacial ground moraine-tillite facies,Lensatis sand-conglomerate facies in englacial channel,proglacial littoral facies,proglacial bay lagoon facies and proglacial bay facies.Datangpo Formation is the Datangpo bay lagoon facies,forming a large manganese deposit,Nanhuan Period climate has the typical three-stage structural features：the upper and lower glacial,sandwiched between an interglacial,i.e.Nantuo glacial stage,the interglacial of Datangpo and Qianzimen glacial.
出处
《重庆工商大学学报（自然科学版）》
2012年第9期70-75,共6页
Journal of Chongqing Technology and Business University:Natural Science Edition
基金
四川省地质矿产局地质调查项目(川第发81046号)
关键词
秀山酉阳地区
南华系
冰碛层
沉积相
南沱组
大塘坡组
千子门组
Xiushan and Youyang area； Nanhuan System； Drift sheet； sedimentary facies； Nantuo Formations； Datangpo Formations； Qianzimen Formations
