| 中国区域化探若干基本问题研究：1999—2009 |
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| 引用本文： | 奚小环 李,敏.中国区域化探若干基本问题研究：1999—2009[J].中国地质,2012,39(2):267-282. |
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| 作者姓名： | 奚小环 李 敏 |
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| 作者单位： | 中国地质调查局,北京,100011 |
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| 基金项目： | 中国地质调查项目“我国青藏高原西北部干旱荒漠景观区域化探方法技术研究”(DK9902119);“我国东北部森林沼泽景观区域化探工作方法技术研究”(DK9902120);“青海省高寒湖沼地区区域化探方法技术研究”(DK9902122);“新疆东天山地区地球化学勘查技术及资源潜力评价方法研究”(200120130088);“区域地球化学勘查标准分析方法研究等”(200120130094);“青藏高原地球化学勘查技术及资源潜力评价方法研究”(20020130001)等联合资助 |
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| 摘 要： | 1999—2009年,中国区域化探发生了根本性改变。主导思想是以地球化学理论为指导研究区域化探方法技术问题和进行矿产资源潜力评价。区域化探方法技术研究的基本要求是最大限度保持原生地球化学分布特征,表生地球化学条件下采样物质问题是区域化探方法研究的核心,样品采集应以代表地质找矿信息的基岩物质成分为原则,在全国范围内最大限度地保持采样物质的一致性。基于成矿地球化学理论建立资源潜力地球化学评价方法和实行地质找矿定量预测,使勘查地球化学从单纯方法手段上升到指导地质找矿的理论高度。主要标志是在全国建立完整的区域化探工作方法技术系统和实行样品分析质量全程监控。在区域化探高精度数据基础上绘制与出版精美的地球化学图集,使区域地球化学图精确地反映地质背景分布与异常特征,促进区域化探数据信息深度开发和利用,建立具有从区域、普查到详查进行全过程独立开展资源调查、评价和预测的方法技术体系和工作程序。区域化探长期支撑中国地质找矿工作,是整个地质找矿工作的先导。随着新一代地区和全国地球化学图的形成,将在基础地质和成矿规律研究以及揭示重大地质事件等方面提供新的发现、新的认识和新的观点,对于未来中国勘查地球化学和整个地质工作产生重要影响。
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| 关 键 词： | 区域化探 方法理论 原生地球化学 表生地球化学 分析精度 分析监控 高精度地球化学图 资源潜力评价 定量预测 |
Regional geochemical exploration in China: from 1999 to 2009 |
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| XI Xiao-huan,LI Min.Regional geochemical exploration in China: from 1999 to 2009[J].Chinese Geology,2012,39(2):267-282. |
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| Authors: | XI Xiao-huan LI Min |
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| Institution: | (China Geological Survey,Beijing 100011,China) |
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| Abstract: | Regional geochemical exploration in China changed greatly from 1999 to 2009.Regional geochemical exploration methods and techniques as well as mineral resources potential assessment have been deliberately studied and remarkable progress has been achieved under the guidance of geochemical theory.The principle of regional geochemical exploration methods and techniques developed aims at demonstrating the primary state of geochemical distribution in the highest degree.Selection of sampling media suitable for landscape and surficial geochemical condition is the key problem for regional geochemical survey.Samples collected should reflect the information of geology and mineralization,and hence weathered material of rocks is usually selected as sampling media.Efforts have also been made to collect the same material over the whole country.The established methods for mineral resources potential assessment and quantitative mineralization prognosis based on the theory of geochemical zoning have promoted the exploration geochemistry from pure methods to a theoretical level for steering mineral prospecting.The main achievements are as follows: systematic methods and techniques of national regional geochemical exploration have been established;analytical process and its quality are strictly controlled;Several geochemical atlases have been published based on accurate geochemical data,which can exactly reveal geological setting and anomalous characteristics;regional geochemical data and its information have been studied profoundly and applied widely;the methodology system and working procedure from regional,reconnaissance to detailed exploration have been established for resource survey,assessment and prognosis.Regional geochemical exploration has been supporting mineral survey in China for a long period,acting as a forerunner of all geological work.It is certain that regional geochemical data will play an important role in new discovery,new understanding and new viewpoints of basic geology,mineralization regularity,and great geological events with the compilation of new geochemical maps covering various regions and the whole country.All this will have great influence on exploration geochemistry and geological work in China. |
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| Keywords: | regional geochemical exploration method and theory primary geochemistry surficial geochemistry analytical precision analytical monitoring accurately |
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