岩石矿物学杂志2012，Vol.31Issue(1)：73-78,6.
广西大厂锡矿泥盆纪中基性火山岩的发现及意义
The discovery of the intermediate and basic volcanic rocks in the Dachang ore deposit, Guangxi, and its geological significance
刘陈明 1秦德先 1燕永锋1
作者信息
- 1. 昆明理工大学矿产地质研究所,云南昆明650093
- 折叠
摘要
Abstract
The discovery of the intermediate and basic volcanic rocks in recent years in the Devonian strata in Dachang Guangxi has important significance in the explanation of the tin ore formation mechanism and the prospecting research. The authors analyzed its volcanic output characteristics, petrology and rock geochemistry and explored the relationship between the volcanic rock and the mineralization. The results show that the volcanic rocks are mainly basalt and andesite. The volcanic rocks are in conformable contact with the surrounding upper and lower rocks, with a lot of classic sedimentary structure characteristics of laminations and stripes, and the output position of the volcanic rocks contains a lot of marine fossils of tentaculitoid. The above evidence indicates that the eruption environment of the volcanic rocks is sea facies. The analysis shows that the ore is closely related to the layered volcanic rocks and shows consistency and continuity with the layered volcanic rocks, and ore sources may be related to the volcanism. It is concluded that the ore deposits in the study area should be of the type of marine volcanic-sedimentary exhalative hot water plus later superposition and alteration.关键词
中基性火山岩/泥盆纪/广西大厂/锡矿床/SEDEXKey words
intermediate and basic volcanic rocks/ Devonian/ Dachang in Guangxi/ tin deposit/ SEDEX分类
天文与地球科学引用本文复制引用
刘陈明,秦德先,燕永锋..广西大厂锡矿泥盆纪中基性火山岩的发现及意义[J].岩石矿物学杂志,2012,31(1):73-78,6.
