湖北黄陵断穹核北部石墨矿形成机制探讨  

Discussion on Formation Mechanism of Graphite Mine in Northern Core of Huangling Faulted Dome,Hubei

作　　者：刘云勇[1] 姚敬敂 

机构地区：[1]中南冶金地质研究所,湖北宜昌443003

出　　处：《资源环境与工程》2017年第5期536-540,共5页Resources Environment & Engineering

摘　　要：黄陵断穹核北部的石墨矿炭质来源于微体生物(藻类)。微体生物在古元古代陆间海陆缘潮坪相和泻湖相中富集、埋藏,在还原环境下沥青化。经区域热动力变质作用,在高角闪岩相温压条件下(P=5.5~7.5 kb,t=600~700℃),有机碳转化为(鳞片状)晶质石墨。后期岩浆活动、混合岩化作用对石墨成矿有利,构造作用与石墨矿化的关系有待进一步研究。The carbon of graphite mine in northern core of Huangling faulted dome is derived from the microbes（ algae）,and the microbes are enriched and buried in the Paleoproterozoic era between intercontinental sea epicontinental tidal flat facies and lagoon facies,and asphaltization in the reduction environment. After the regional thermal power metamorphism,organic carbon is converted to（ scaly） crystalline graphite at high amphibolite temperature and pressure（ P = 5. 5 - 7. 5kb,t = 600 - 700 ℃）. Late magmatic activity and mixed petrophysization are favorable for graphite mineralization,and the relationship between tectonic action and graphite mineralization needs further study.

关 键 词：黄陵断穹 石墨 成矿机制 

分 类 号：P619.252[天文地球—矿床学]