摘要
文中讨论了豫西地区中,晚石炭世含铝岩系底板碳酸盐岩的岩溶特征和岩溶在铝土矿化中的作用。笔者认为岩溶作用主要发生在古地形有利的构造交叉部位,并讨论了溶斗、溶洼、溶盆和溶原的演化过程及其与铝土矿的产状和品位规模的关系。文中也分出了地表岩溶化、同生岩溶化和潜岩溶化三个岩溶作用阶段。碳酸盐岩的钙红土化是成矿物质来源之一;后期岩溶水的作用是形成富矿体的主要因素。岩溶作用造成含铝岩系及其上覆地层的向心倾斜状特征可以作为区内寻找富矿体的标志。
The discussion is focused on features of karstification of carbonate rocks that underlie aluminium-bearing rock series of Middle and Late Carboniferous and the functions of karstification in the formation of bauxite deposits. It is considered by the author that karstification took place in the intersecting positions of structures in favourable paleotopo graphy. The evolution and development of doline, uvala, polje and karstic plain and their relations with the occurrence and grade of the bauxite deposits are discussed. Three stages of karstification are classified, namely, surface karstification, syngenetic karstification and potential karstification. The products of Ca-lateritization of carbonate rocks of the Middle Ordovician and Upper Cambrian is one of the sources of ore-forming materials. The action of karst water in the late stage is one of the main factors for the formation of rich bonanzas. The synclinal structural features of orebodies and their overlying strata may serve as an indication of prospecting for highgrade ores.
出处
《中国岩溶》
CAS
CSCD
北大核心
1989年第1期62-69,共8页
Carsologica Sinica
