| 中国天山东部铁矿分布规律 |
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| 引用本文：.1984.The Distribution Regularity Of Iron Ore Deposits In Eastern Tianshan Mountains[J].Mineral Deposits,3(4):1~8 |
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| The Distribution Regularity Of Iron Ore Deposits In Eastern Tianshan Mountains |
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| Abstract:This paper is devoted to the study of the distribution of iron ore deposits in Eastern Tianshan Mountains in terms of their tectonic positions. Observations show clearly that iron ore deposits in this region and their distribution are governed by a peculiar pattern that the traditional theories fail to explain. Through a detailed analysis of the spatial and time distribution of iron ore deposits in eastern Xinjiang on the basis of field investigation and map compilation, the authors have unequivocally reached the conclusion that the distribution pattern of iron ore deposits in eastern Tianshan is directly related to tectonic setting, that the geotectonic condition is a major factor controlling the distribution and regional zoning of iron ore deposits, and that the examination of ore-governing structures is therefore of primary importance. Statistics show obviously the persistent nature of the regional distribution of iron ore deposits, which extends through different geotectonic units, suggesting that the Eastern Tianshan Metallic Province is related mainly to the geochemical anomalies in upper mantle and at the depths of the crust. An investigation into the distribution of ore types reveals that mineralization zones and ore zones composed of different types of ore deposits coincide correspondingly with geotectonic units of different orders, indicating that each geotectonic unit has its own mineralization and typical ore association: volcanogenic iron deposits are confined mainly to North Tianshan Late Paleozoic Eugeosyncline, sedimentary type iron deposits lie predominantly in South Tianshan Miogeosyncline, and sedimentary-metamorphic iron deposits occur chiefly in marginal zone of Tarim Platform. |
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