摘要
国防铁矿赋存于元古界大勐龙群下段第四亚段(Ptj^(1-4))和第二亚段(Ptj^(1-2))变质中基性熔岩中。富含铁质的基性火山岩喷发之后,铁物质同时沉积形成初始矿床,后经多次变质作用叠加改造,使铁质进一步富集成矿,该铁矿属火山喷发沉积-变质改造叠生矿床。
Guofang Fe deposit is in Proterozoic Damenglong Group Lower Member 4th Submember （Ptj1-4） and 2nd Submember （Ptj1-2） metamorphosed intermediate-basic lava. After the eruption of Fe -bearing basic volcanic rock, the simultaneous sedimentation of Fe material forms the primitive ore deposit, which is superimposed and reformed by metamorphism in many times. The Fe material further concentrates and forms the ore deposit. It belongs to the ore deposit of volcanic eruption sedimentation - metamorphic reformation superimposition in genesis.
出处
《云南地质》
2016年第1期5-8,共4页
Yunnan Geology
关键词
火山喷发沉积
热液变质叠加
云南景洪国防
Volcanic Eruption Sedimentation
Hydrothermal Metamorphism Superimposition
Guofang, Jinghong, Yunnan.
