遵义川主庙漏斗状铝土矿床地质特征及形成机理  

Geological Character and Formation Mechanism of Funnel Bauxite Deposit in Chuanzhumiao,Zunyi

作　　者：韦胜永[1] 朱永红[1] 罗勇 张斌[1] 丁恒[1] 崔登伟[1] 王建顺[1] 

机构地区：[1]贵州省地矿局106地质大队,贵州遵义563000 [2]中国铝业遵义氧化铝有限公司,贵州遵义563000

出　　处：《贵州地质》2009年第3期193-198,共6页Guizhou Geology

摘　　要：遵义川主庙铝土矿产于下石炭统九架炉组的中上部,以矿体形态呈漏斗状和"小而富"为其主要特征。研究表明,铝土矿的赋存富集受古岩溶漏斗和沉积环境的制约,基底页岩是形成铁铝质风化壳的母岩,矿床是在经过长期风化剥蚀的早古生代碳酸盐岩侵蚀面上发育起来的,即在有利的古构造、古地理和古气候条件下,首先经过红土化,后经搬运再沉积而形成的。矿床成因类型划为古风化壳型异地堆积铝土矿床,其成矿时代归属早石炭世大塘期旧司时。Chuanzhumiao bauxite deposit in Zunyi occurred on the middle and upper position of Jiujialu formation, lower Carboniferous system, small but rieh and funneled orebody are its characters. According to the study results, it indicated the occurrence and concentration is restricted by paleokarst funnel and sedimentary environment, the base shale is the parent rock that form ferrallitic residuum, the deposit developed on the early Paleozoic carbonate rock erosion after long time＇ s weathering denudation, in the beneficial paleostructure, paleogeology and palaeoclimated condition, it formed from laterization, transportation and sedimentation. Genetic type of ore deposit is divided into ancient weathering crust allochthonous bauxite deposit, its metallogenic epoch is Jiushi time, Datang period, early Carboniferous system.

关 键 词：铝土矿 矿床地质特征 形成机理 遵义川主庙 贵州 

分 类 号：P618.45[天文地球—矿床学]