鄂西泥盆纪沉积铁矿含矿建造分析
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摘要
鄂西铁矿含矿建造由泥盆系碎屑岩、泥质岩、碳酸盐岩及铁质岩组成。共生岩石组合具有明显的稳定型沉积特点,石英净砂岩、泥质岩、灰岩及具有鲕状结构的铁质岩均形成于稳定陆块的滨海环境。建造内未发现火山沉积和热水沉积,物源均来自周围古陆。建造形成过程中,盆地拗陷幅度小,沉积物厚度薄,属地壳沉降和物源补偿低速率共生模式。
The sedimentary formation bearing iron ore at west Hubei was constituted by clastic rock,argillites,carbonate rocks and ferruginous rock of Devonian. Assemblege of the paragenisis rocks showed characteristies of stable sediments, the pure quartz sandstone,argillite,limestone and oolitic ferrolite all fromed at littoral area of the stable continental block. In the formation there were not volcanic and hot water sediment,the materials of the formation were from paleocontinental around. In the course of the formation construction range of settleing small and thin bed of sediments,so belonging to lower speed model of crustal subsidence and material compensation.
The sedimentary formation bearing iron ore at west Hubei was constituted by clastic rock,argillites,carbonate rocks and ferruginous rock of Devonian. Assemblege of the paragenisis rocks showed characteristies of stable sediments, the pure quartz sandstone,argillite,limestone and oolitic ferrolite all fromed at littoral area of the stable continental block. In the formation there were not volcanic and hot water sediment,the materials of the formation were from paleocontinental around. In the course of the formation construction range of settleing small and thin bed of sediments,so belonging to lower speed model of crustal subsidence and material compensation.
引文
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[6]张汉金,李正华,龚志愚,田望学.湖北省泥盆纪古地理基本模式[J].资源环境与工程,2006,20(5):493-496.
[7]张丽萍,杨达源,朱大奎.长江三峡黄陵背斜段地质时期结晶岩风化剥蚀速率研究[J].中国科学:D辑,2003,33(1):82-87.
[2]叶连俊.华北地台沉积建造[M].北京:科学出版社,1983.
[3]冯增昭,王英华,刘焕杰,沙庆安,王德发.中国沉积学[M].北京:石油工业出版社,1994.
[4]湖北省地质矿产局.湖北省区域地质志[M].北京:地质出版社,1990.
[5]G.M.弗里德曼,J.E桑德斯.沉积学原理[M].北京:科学出版社,1987.
[6]张汉金,李正华,龚志愚,田望学.湖北省泥盆纪古地理基本模式[J].资源环境与工程,2006,20(5):493-496.
[7]张丽萍,杨达源,朱大奎.长江三峡黄陵背斜段地质时期结晶岩风化剥蚀速率研究[J].中国科学:D辑,2003,33(1):82-87.