| 甘肃省二只哈拉地区地球化学勘查实例分析 |
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| 引用本文： | 苟建德,朱从龙,谢洪春,任育智.甘肃省二只哈拉地区地球化学勘查实例分析[J].物探与化探,2009,33(1):27-30. |
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| 作者姓名： | 苟建德 朱从龙 谢洪春 任育智 |
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| 作者单位： | 1. 甘肃省有色地质勘查局106队,甘肃,兰州,730046
2. 甘肃有色地质调查院,甘肃,兰州,730000 |
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| 摘 要： | 分析二只哈拉地区地球化学勘查资料认为，在以二只哈拉为代表的祁连山高寒地区进行1∶5万水系沉积物测量，样品粒度取-40目，可获得较好成果。在海拔3 000 m以上地段，采用1∶2.5万沟系次生土壤样测量，粒度取-40目上，欠合理性。采集小于0.5 cm的岩块，岩屑混合物测量，按原生晕的方法分析样品，能清晰圈定异常。各类化探异常成果预示了二只哈拉粱一带存在金矿（化）体，1∶1万岩屑异常基本圈定了矿化体范围。
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| 关 键 词： | 甘肃省二只哈拉 地球化学勘查 水系沉积物异常 |
| 收稿时间： | 2007-05-10 |
AN ANALYSIS OF A GEOCHEMICAL EXPLORATION CASE STUDY
IN ERZHIHALA AREA, GANSU PROVINCE |
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| GOU Jian-de,ZHU Cong-long,XIE Hong-chun,REN Yu-zhi.AN ANALYSIS OF A GEOCHEMICAL EXPLORATION CASE STUDY
IN ERZHIHALA AREA, GANSU PROVINCE[J].Geophysical and Geochemical Exploration,2009,33(1):27-30. |
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| Authors: | GOU Jian-de ZHU Cong-long XIE Hong-chun REN Yu-zhi |
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| Institution: | 1.No.106 Geological Party of Gansu Bureau of Geological Exploration for Nonferrous Metals,Lanzhou730046,China; 2.Gansu Institute of Geological Survey for Nonferrous Metals,Lanzhou730000,China |
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| Abstract: | Based on an analysis of the geochemical exploration data obtained in Erzhihala area, some conclusions have been reached: when 1∶50 000 stream sediment survey is conducted in Qilianshan subnival region represented by Erzhihala area, the sample granularity of -40 mesh can yield relatively good result; when the work is carried out in areas over 3 000 m above the sea level, the adoption of -40 mesh in 1∶25000 ditch secondary soil survey is not very reasonable; when the mixed rock fragments and lithic materials whose sizes are smaller than 0.5 cm are collected and the samples are analyzed according to the primary halo method, anomalies can be distinctly delineated. Geochemical outcomes imply that gold mineralized bodies do exist in Erzhihala area, and 1∶10 000 lithic anomalies can basically delineated the limits of mineralized bodies. |
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| Keywords: | Erzhihala in Gansu Province geochemical exploration anomaly of stream sediments |
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