| 宁芜玢岩铁硫矿床成矿规律和找矿预测研究 |
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| 引用本文：.1990.A study of ore-forming regularity and ore prognosis of porphyrite iron-sulfur deposits in Ningwu (Nanjing-Wuhu)area[J].Mineral Deposits,9(1):1~12 |
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| 中文摘要:宁芜玢岩铁硫矿床是受中生代火山喷发、火山构造、浅源富钠闪长岩浆控制的一套矿床组合，空间上具“三部八式”分布舰律。成矿作用与富钠闪长岩浆演化有成因联系，为构造一岩控成矿系列。积50余年找矿经验认为：地质与物探工作配合，通过地质调查—物探—地质解释→钻探验证的工作循环，是最合理、最见成效的找矿方法。依现有地质慨念和重磁找矿模型，通过矿床分布律、信息量、秩相关、回归分析和蒙特卡洛模拟等手段得出：宁芜成矿带本身找矿潜力已十分微弱，而盆地南部雍镇矿Ⅱ{及其南延地区是较有希望的。 |
| 中文关键词:玢岩铁硫矿床 成旷规律 找矿预测 宁芜 |
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| A study of ore-forming regularity and ore prognosis of porphyrite iron-sulfur deposits in Ningwu (Nanjing-Wuhu)area |
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| Abstract:The iron-sulfur deposits in Ningwu area make up a suite of ore associations controlled by Mesozoic volcanic eruption. volcanic structure and shallow source soda-rich diorite maoglna and showing ”three-part and eight-style” distribution pattern. The mineralization is genetically related to the evolution of soda-rich diorite magma and thus belongs to structuraI-rock controlled metallogenic series. The ore-prospecting experience gaincd in the past fifty years indicates that the coordination of geological and geophysical work together with the cyclic procedure of geological survey-geophysical prospecting-geological interpretation→drilling inspection seems to be the most reasonable and effective ore prospecting method. On the basis of the available geological conception and tile gravity-magnetic ore prospecting models as well as tile data obtained in such aspects as distribution pattern of ore deposits. quantity of information, rank correlalion regression analysis and Monte-Carlo simulation, it is concluded that the ore prospecting potentiality in the Ningwu metallogenic belt propei’is rather poor, but the Yongzhen orefield and i ts southward extension seem to be quite promising? |
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