摘要
云南中西部喜马拉雅期分为 4个构造幕 ,其岩浆侵入活动反映两个热旋回 ,当岩浆侵入活动结束后才出现火山喷发高潮。笔者首次将新生代内生成矿作用划分为 6个时间序列。根据岩石类型组合、侵位时限、成矿专属性 ,首次将富碱斑岩分为 6个超单元、 18个单元 ,从 7个方面总结各单元、超单元特征。对富碱斑岩和其它 4类岩浆岩进行了演化规律的对比。探讨金顶超大型铅锌矿床与各类岩浆岩的成因关系 ,详细论述了铅同位素和惰性气体的最新资料并加以对比 ,初步认为两者深部物源与形成过程有本质上的重要联系 ,金顶及兰坪盆地内的热水矿床是一套与地幔及幔壳混合有一定关联的独立成矿作用。
The Himalayan in the central western part of Yunnan can be divided into 4 tectonic episodes. The magmatic intrusion of them indicates 2 thermal cycles and the high tide of volcanic eruption takes place after the magmatic intrusion. We first divided the Cenozoic endogenetic metallogenesis into 6 time series. The alkali rich porphyry is first divided into 6 superunits and 18 units according to rock assemblage, emplacement time and metallogenetic specialization and their characteristics are summarized in 7 aspects. The evolution las of alkali rich porphyry is correlated with those of other 4 magmatic rocks. In order to study the genetic relation of Jinding super large Pb Zn deposit to various magmatic rocks, the newest data of Pb isotope and inert gas are discussed and correlated in detail. We tentatively think that there is an important innate connection in the deep material source and formation process of them. The hydro thermal deposits in Jinding and Lanping basin are formed by a set of independent metallogenesis with a certain connection to the mantle and mantle crust mixture.
出处
《云南地质》
2001年第3期229-242,共14页
Yunnan Geology
