| 汪校锋.海南岭头地区金土壤地球化学
特征及找矿潜力分析[J].地质与勘探,2011,47(3):406-413 |
| 海南岭头地区金土壤地球化学
特征及找矿潜力分析 |
| Geochemical Characteristics of Gold-bearing Soil and Ore-searchingPotential of the Lingtou Area, Hainan Province |
| 投稿时间：2010-04-04 修订日期：2010-09-06 |
| DOI： |
| 中文关键词: 土壤 金异常 地球化学 蚀变岩石 岭头地区 海南 |
| 英文关键词: soil, Au anomaly, geochemistry, altered rocks, Lingtou area, Hainan Province |
| 基金项目: |
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| 中文摘要: |
| [摘要]根据1颐20 万化探Au 异常,在琼中岭头地区开展1颐1 万土壤地球化学勘探工作。对获得的
4813 个有效土壤样品进行的Au、Cu、Mo、Hg、Pb 等项目的分析测试表明,海南岭头地区Au 异常普遍,II
级和III 级异常面积大,强度高。对硅化、黄铁矿化以及绢英岩化等蚀变岩石样品的Au 等元素分析表
明,区内西南部抱板群构成了海南岭头地区Au 的主要赋矿岩系,230Ma 左右琼中岩体的侵位及后期的
NE、NW 向断裂活动过程中,在岩浆热液和构造应力作用下,Au 富集在岩体与抱板群的接触边界及断层
带内。海南岭头地区西南部抱板群内、断裂带以及琼中岩体和抱板群的接触部位为有潜力的找矿靶区。 |
| 英文摘要: |
| Abstract:A further geochemical exploration of the soil on a scale 1颐10000 was carried out based on the gold geochemical anomaly data from the previ鄄
ous survey of a scale 1颐200000 in the Changtouling area of Hainan Province. Totally 4813 effective soil samples were collected and measured on elements
Au, Cu, Mo, Hg and Pb. The results show that gold anomalies prevail in the survey region with large areas and high intensity of II and III grades of the
anomaly. The analysis on the samples of rocks of silication, pyritization and phyllic alteration indicates that the Baoban Group is the major source of the
Au element in this area. It is inferred that during the emplacement of the Qiongzhong granite and the following activities of NE and NW-trending faults,
magma hydrothermal and tectonic stress made the element of Au enriched inside the fault zones and the contact boundary between the Baoban Group and
the Qiongzhong granite in the southwest of the survey area, which are considered to be the targets with prospecting potential. |
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