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现代地质 ›› 2012, Vol. 26 ›› Issue (5): 996-1007.

• 地球化学 • 上一篇    下一篇

地球化学岩相学类型及其在沉积盆地分析中应用

 方维萱1,2   

  1. 1 中色地科矿产勘查股份有限公司,北京100012;2 中国地质大学 地球科学与资源学院,北京100083
  • 收稿日期:2012-06-12 修回日期:2012-07-10 出版日期:2012-10-19 发布日期:2012-10-23
  • 作者简介:方维萱,男,研究员,博士生导师,1961年出生,矿产普查与勘探专业,主要从事矿床学、资源产业经济学与生态环境学研究。Email:fangweixuan@tom.com。
  • 基金资助:

    国家自然科学重点基金资助项目(41030423);科技部转制科研院所专项资金项目(2008EG115074,2009EG115074);昆明中色地科研发项目(KZSDK 2007-3)。

Types of Geochemical Lithofacies and Their Applications in Basin

 FANG  Wei-Xuan-1,2   

  1. 1 Sino Tech Mineral Exploration Joint stock Company,Beijing100012, China;2 School of Earth Sciences and Resources, China University of Geosciences,Beijing100083, China
  • Received:2012-06-12 Revised:2012-07-10 Online:2012-10-19 Published:2012-10-23

摘要:

按照流体地球化学动力学-岩石组合系列,地球化学岩相学相系统类型分为氧化-还原相(ORF)、酸碱相(Eh-pH F)、盐度相(SF)、温度相(TF)、压力相(PF)、化学位相(CF)、不等化学位相和不等时不等化学位地球化学岩相等8种。在沉积盆地分析中,地球化学岩相学主要用于沉积盆地物质组成及演化历史研究,恢复重建沉积盆地中流体场类型和成分特征、流体场分布范围及运移规律、流体场大规模运移机制及动力学、盆地改造过程中流体叠加关系等,进行深部找矿预测。

关键词: 地球化学岩相学, 氧化-还原相, 叠加岩相, 沉积盆地, 流体运移

Abstract:

Types of geochemical lithofacies may be classified into oxidizing reducing lithofacies, acidityalkalinity lithofacies,salinity lithofacies,temperature lithofacies, pressure lithofacies, chemical potential lithofacies, heterochemical potential lithofacies, and heterochronous heterochemical potential lithofacies, based on geochemical dynamics of fluids and series of rock associations. In the basin analysis, geochemical lithofacies may be applied to study on rock compositions in the sedimentary basin and evolution history of basin. It can help us to restore and rebuild types and compositions of fluid field, distribution areas and migration rules of fluid field, mechanism and dynamics of fluid migrations at the large scale, and relationships of hydrothermal fluid superimposing during the deformation of basin in order to predication for mineral resource at the depth.

Key words: geochemical lithofacies, oxidizingreducing lithofacies, superimposing lithofacies, sedimentary basin, fluid migration