贵州东部黑色岩系中钒矿层地球化学特征及意义
Geochemical characteristics and significance of V deposits in black rock series in east Guizhou province
鲜绍军 1罗俊峰 1刘玲 2蒲庆隆1
作者信息
- 1. 贵州省有色金属和核工业地质勘查局地质矿产勘查院,贵阳 550005
- 2. 贵州省有色金属和核工业地质勘查局,贵阳 550005
- 折叠
摘要
为探讨贵州东部黑色岩系中钒金属矿层形成的沉积环境与成矿作用,对典型矿床矿层及顶底页岩样品采用电感耦合等离子质谱仪进行系统的微量元素、稀土元素分析测试.结果表明:钒多金属含矿层沉积环境为缺氧的还原环境,受热水作用影响,钒矿层在海平面上升的情况下形成,是在正常成岩过程中叠加的一次成矿作用,与海底热液活动和海水深度密切相关.钒金属矿层与顶底页岩在成岩作用、后生作用甚至表生作用中元素迁移等复杂的元素重新分配上密切一致.
Abstract
This paper deals with sedimentary environment and ore-forming process of V deposits in black rock series in east Guizhou province.Samples are collected systematically from shale of hanging wall and foot wall of V ore layers and analyzed REE and trace elements with inductively coupled plasma mass spec-trometry.The result shows that the V-polymettal-bearing beds are deposited under anxic reducing enbi-ronment and V ore bed is formed during rising of sea level under influence of hot water.The V minerali-zation is over printed on normal diagnenesis and is closely related to sub-marine hydrothermal activity and depth of the sea water.V ore bed is very similar to the shale of hanging and foot walls in respect of ele-ment migration and redistribution etc.during diagenesis,epegenesis and even supergenesis.
关键词
黑色岩系/钒金属层/微量元素/稀土元素/地球化学特征/贵州Key words
Black rock series/V-ore bed/trace element/REE/geological characteristics/Guizhou province引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据