摘要
中国东部的碳酸盐沉积,按其大地构造和沉积特点可分为稳定型和过渡型,它们在不同大地构造区内的发育时期有所不同。碳酸盐岩中的层控铅锌矿床可分为同生沉积型(热液喷气沉积)和后生型(MVT),它们在成因上是相互联系的。主要矿化层位随区域构造历史不同而变化,出现在克拉通化前的过渡型和克拉通化后的稳定型碳酸盐中;在空间上有成带分布特点,主要分布在裂谷带和被动大陆边缘,与同生断裂密切相关。
The carbonate rocks of eastern China can be divided into stable and transitional types basedon the tectonic and sedimentary characters. Their development ages depend on varied tectonic regions.The stratabound deposits in carbonate rocks have been divided into two main types: syngenetic (subma-rine exhalative deposits) and epigenetic (MVT), and both origins are related to each other. The mainmineralized strata varied with regional tectonic histories. They are of transitional and stable types, oc-curring in pre-cratonization and post-cratonization, respectively. These ore deposits displaying belteddistribution mainly occurred in rift and passive continental margins, related to the syndepositional frac-tures.
关键词
碳酸盐岩
沉积特征
铅锌矿床
Eastern China
carbonate rocks
strata-bound deposits
lead-zine ore deposits
