[1]马旭东,钟 焱,陈雅丽.2018.华北克拉通孔兹岩带内孔兹岩系沉积过程对石墨矿床成矿的控制.大地构造与成矿学,优先出版:001-14.doi:10.16539/j.ddgzyckx.2019.02.015
 MA Xudong,ZHONG Yan,CHEN Yali and QU Xiaoming.2018.The Graphite Mineralized Controlled by the Sedimentary Process of the Khondalite Series, Western North China Craton.Geotectonica et Metallogenia,优先出版:001-14.doi:10.16539/j.ddgzyckx.2019.02.015
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华北克拉通孔兹岩带内孔兹岩系沉积过程对石墨矿床成矿的控制
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《大地构造与成矿学》[ISSN:ISSN 1001-1552/CN:CN 44-1595/P]

卷:
期数:
2018年优先出版
页码:
001-14
栏目:
出版日期:
2019-12-30

文章信息/Info

Title:
The Graphite Mineralized Controlled by the Sedimentary Process of the Khondalite Series, Western North China Craton
作者:
马旭东1 钟 焱2 陈雅丽3 曲晓明1
1.中国地质科学院矿产资源研究所, 自然资源部成矿作用与资源评价重点实验室, 北京 100037; 2.中国 地质调查局天津地质调查中心, 天津 300170; 3.农业部环境保护科研监测所, 天津 300191
Author(s):
MA Xudong1 ZHONG Yan2 CHEN Yali3 and QU Xiaoming1
1. MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China; 2. Tianjin Center, China Geological Survey, Tianjin 300170, China; 3. Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
关键词:
石墨矿床 物质来源 孔兹岩系 华北克拉通
Keywords:
graphite deposit source of graphite khondalite series North China Craton
DOI:
10.16539/j.ddgzyckx.2019.02.015
文献标志码:
A
摘要:
石墨因其特殊的物理化学性质广泛应用于现代工业, 市场对石墨特别是高品质的晶质石墨需求日趋增大。华北克拉通做为晶质石墨的主要产区, 大部分矿床产于早前寒武纪孔兹岩系中。通过总结华北克拉通西部孔兹岩系中石墨的碳同位素特征, 确定石墨中的碳主要来源于前期沉积物中的有机质, 仅混合少量麻粒岩相去气过程中产生的无机碳, 因此有机质的沉积量成为控制石墨矿储量的最主要因素。在此认识基础上, 本文总结了华北克拉通西部孔兹岩系的地质特征、岩石组合、含矿性、构造变形及年代学特征, 进而探讨华北克拉通西部孔兹岩系沉积过程对石墨矿床成矿的控制, 认为孔兹岩系的沉积环境为活动陆缘的弧后盆地, 沉积序列底部最有利于有机质的沉淀。结合该带内地质情况, 确定 华北克拉通西部具有寻找大型石墨矿的巨大空间。
Abstract:
Due to its special physical and chemical properties, graphite is widely used in the modern industry, resulting in the booming demands of flake crystalline graphite. The North China Craton (NCC) is Chinese biggest producing area for crystalline graphite, and most graphite deposits occurred in the Precambrian khondalite series. In this study, we summarized carbon isotopic composition of the graphite from the khondalite series in the western NCC, to confirm that the organic matter deposited during the sedimentation is the major source of ore-forming materials for the graphite. Thus, we reviewed the geological characteristic, ore-bearing potential, tectonic deformation and geochronology for the khondalite series in the western NCC, and interpret these khondalites were deposited in back-arc basin along an active continental margin. An attempt to lithofacies paleogeographic illustrating for the khondalite series, make us clear that the bottom sequence is favorable for the formation of graphite. At last, we conclude the indicators for graphite deposit exploring and prospecting potential of graphite ores in this region.

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更新日期/Last Update: 2019-05-08