| 论滇中喜山期碱性岩浆作用有关金矿床 |
| |
| 引用本文： | 沈秋伟.论滇中喜山期碱性岩浆作用有关金矿床[J].吉林大学学报(地球科学版),1991(4). |
| |
| 作者姓名： | 沈秋伟 |
| |
| 作者单位： | 云南省地质科学研究所 |
| |
| 摘 要： | 滇中盆地是发育于康滇地轴之上的中新生代裂谷型断陷盆地。中生代期间,它发育了一套断陷型的红色磨拉石建造;新生代以来,发育了一套碱性浅成侵入杂岩和点式喷发的火山杂岩。此类碱性岩主要分布于哀牢山断裂东侧,滇中盆地仅是其分布地区的一个部分。自南华至华坪近25000km~2的滇中地区,分布有此类岩浆岩30多处。目前,已在其中的若干处发现有类型较为特殊的金矿化,姚安老街子地区则已查明为—工业矿床。本文论述了滇中与喜山期碱性岩浆作用有关金矿床的地质特征。
|
| 关 键 词： | 喜山期 碱性岩浆作用 脉状金矿床 镜铁矿载金 |
GOLD DEPOSITS RELATION TO THE CENOZOIC ALKLINE MAGMATIC PROCESS OVER MID-YUNNAN BASIN |
| |
| Shen Qiuwei.GOLD DEPOSITS RELATION TO THE CENOZOIC ALKLINE MAGMATIC PROCESS OVER MID-YUNNAN BASIN[J].Journal of Jilin Unviersity:Earth Science Edition,1991(4). |
| |
| Authors: | Shen Qiuwei |
| |
| Institution: | Yunnan Institute of Geological Sciences |
| |
| Abstract: | Mid-Yunnan Basin is a riftogenesis basin developing during Mesosoic-Cenozoic Eras, which is subordinate to the Old Kangdian Continent. A series of red molasze formation were developed during Mesosoic Era. A series of alklic superficial intrusive bodies and volcanic comples were developed along Cenozoic Era. These alklic rocks are mainly distributed over the east side of Ailaoshan Deep Fault. Mid-Yunnan Basin is only a part of the distributing area. There are more than 30 Cenozoic igneous rocks distributing places over the basin. A special type of gold mineralization has been now discovered at some of these places, and an industrial ore deposit has been found out in Laojiezi District, Yaoan County.For the gold deposits in this region, there are three major points interesting economical geologists. First, some new signals of primary gold deposits formed during the Cenozoic Era appearing in our mainland; second, specularite as carrier or bestowing host for the gold) third, alklic rocks being cognate with the gold-bearing fluids. Such problems and the corresponding geological characteristics will be discussed in this paper. |
| |
| Keywords: | Cenozoic Era (Himalaya Movement Stage) alklic igneous process vein ore of gold specularite hosting gold |
| 本文献已被 CNKI 等数据库收录！ |
|
