摘要
云南鹤庆锰矿的成因为火山(气液)-沉积型,其含矿岩系为上三叠统松桂组(T_3S)。将该组地层,从岩石类型及微量元素组合等两个方面,分别划分为5—6个状态,用马尔柯夫过程分析进行研究,结果表明该组地层的沉积具明显的海侵旋回特点。由此可以判定,在鹤庆矿区的松桂组中的一段厚度大于100m的细—粗粒长石砂岩层,以置于该组底部比较合理。这一结果,对于正确认识矿区基本地质特征是十分有意义的。
Heqing manganese mine was formed by volcano-deposition. The mineral-bearing rocks is of Songgui formation ,Tr 3. In the respect of rock type and trace element,the formation can be divided into five to six states respectively. The study of Markov process analysis show that the strata of the formation have the character of obvious transgressive cycle. It can be conduced that the fine-coarse arcose with thickness over 100m in Songgui formation of Heqing mining area is located at the bottom of the formation. The conclusion is very important recognize correctly the basic geological character of the mining area.
出处
《矿物岩石》
CAS
CSCD
1993年第2期85-90,共6页
Mineralogy and Petrology
关键词
锰矿床
含矿岩系
微量元素
松桂组
Songgui formation
transgressive cycle
Markov process
lithologic state
trace element
