| 西秦岭金矿床包裹体、氢氧同位素特征及其地质意义 |
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| 引用本文： | 王学明,邵世才,汪东波.西秦岭金矿床包裹体、氢氧同位素特征及其地质意义[J].地质与资源,2000,9(1):44-48. |
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| 作者姓名： | 王学明 邵世才 汪东波 |
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| 作者单位： | 北京矿产地质研究所, 北京 100012 |
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| 基金项目： | 国家西部科技攻关项目!96- 91 4 - 0 1 - 0 4专题，有色地勘总局重点项目!98- D- 1资助 |
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| 摘 要： | 在简述西秦岭地区成矿环境的基础上,对该区金矿床的包裹体及氢氧同位素特征进行了研究,结果表明:本区金矿床多赋存于泥盆系浅变质碎屑岩及不纯碳酸盐岩中,成矿具多期多阶段的特点.成矿流体多为富CO2的Na+-Ca2+-Cl--SO42-型低盐度热卤水,矿液来源较为复杂,以大气降水为主,并不同程度地受岩浆作用及赋矿围岩的影响.成矿是在中低温、弱还原、弱酸性的条件下进行的.
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| 关 键 词： | 金矿床 包裹体 氧氧同位素 西秦岭 |
| 文章编号： | 1002-4182(2000)0l-0044-05 |
| 收稿时间： | 1999-06-25 |
| 修稿时间： | 1999-06-25 |
THE FEATURES AND GEOLOGICAL SIGNIFICANCE OF INCLUSION AND HYDROGEN AND OXYGEN ISOTOPES IN WESTERN QINLING AREA |
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| WANG Xue-ming,SHAO Shi-cai,WANG Dong-bo.THE FEATURES AND GEOLOGICAL SIGNIFICANCE OF INCLUSION AND HYDROGEN AND OXYGEN ISOTOPES IN WESTERN QINLING AREA[J].Geology and Resources,2000,9(1):44-48. |
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| Authors: | WANG Xue-ming SHAO Shi-cai WANG Dong-bo |
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| Institution: | Beijing Institute of Geology for Mineral Resources, Beijing 100012, China |
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| Abstract: | On the basis of introducing metallogenic setting of the western Qinling area,the features of inclusion and H and O isotopes of the gold deposits in this area are studied.The results show that the gold deposits in this area, occurred mainly in epimetamorphosed clastic rocks and impure carbonate of Devonian,are characterized by multi stage mineralization.Metallogenic fluids mostly belong to Na +-Ca 2+ -Cl --SO 2- 4 type thermal bittern with rich CO 2 and low salinity.They mainly originated from atmosphere precipitation and were influenced by magamatism and wall rocks of ore deposits.Mineralization was carried out under condition of middle low temperature,weak reduction,and weak acid. |
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| Keywords: | gold deposit inclusion hydrogen and oxygen isotopes western Qinling |
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