| 云南勐野井岩盐(钾)矿区物探成果再解释的地质效果 |
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| 引用本文： | 王宝禄.云南勐野井岩盐(钾)矿区物探成果再解释的地质效果[J].物探与化探,1989,13(4):290-299. |
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| 作者姓名： | 王宝禄 |
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| 作者单位： | 云南省地质矿产局地矿处 |
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| 摘 要： | 勐野井岩盐(钾)矿床普查、初勘和补勘经历了13年。在矿区及其外围两次开展野外工作,对成果反复进行解释,补勘后再次做了研究。本文介绍了各阶段物探工作所取得的地质效果。地质普查前期开展物化探方法试验,确定了重力配合电测深为直接找盐的有效工作方法。根据物探工作成果推断岩盐体深度、厚度、空间形态及估算远景储量,多为初勘证实。补勘前再次开展物探工作,对异常回防收集矿区资料,物探成果进行再解释,圈定了矿体边界,提出了矿体钻孔已打穿岩盐层,北侧深部不含盐的论点,为地质“探底摸边”提供了资料。自然伽马能谱测井有效地划分了钾盐层。物探结合地质、盐泉水化学资料,进行综合研究,可以划分盐(钾)的成矿远景区。通过岩盐(钾)物探工作,总结了一套合理的地质、物探工作程序,在全省盐(钾)普查中起到了缩小找矿靶区、加快工作进程、节约投资的作用,收到了良好的经济效益。
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| 关 键 词： | 井 岩盐矿 地质成果 物探成果 |
GEOLOGICAL EFFECTS OF REINTERPRETING GEOPHYSICALPROSPECTING OUTCOMES IN THE MENGYEJING ROCKSALT (POTASH SALT)ORE DISTRICT OFYUNNAN PROVINCE |
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| Institution: | Department of Geology and Mineral Resources, Bureau of Geology and Mineral Resources of Yunnan Province |
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| Abstract: | The reconnaissance, preliminary exploration and additional exploration for the Mengyejing rock salt (potash salt) deposit has lasted for 13 years. Field work was conducted twice in the ore district and its outskirts, and the result was repeatedly interpreted; following the additional exploration, researches were made again. This paper makes an account of the geological outcomes gained in geophysical prospecting work at various stages.Geophysical and geochemical prospecting techniques were tried out at the early stage of geological reconnaissance, and it was demonstrated that gravity survey in coordination with electrical sounding was an effective method for direct search of salt. The depth, thickness, spatial form and estimated prospe ctive reserves inferred from geophysical prospecting results were mostly con firmed by preliminary exploration.Geophysical prospecting work was once more performed before the addi tional exploration; anomalies were reexamined; data of the ore district was collected; geophysical results were reinterpreted; and the boundary of the orebody was delimited. The argument was put forward that the drill hole hadalready passed through the rock salt bed and no salt could be found at the depth of northern flank. This provided data for "exploring the depth and the margin" in the geological work. The gamma-ray energy spectral logging divided the potash salt bed with effectiveness. It has been proved that the integrated study by combining geophysical prospecting with geological data and data of saline spring chemistry can classify the salt (potash salt) ore prospective areas.Through geophysical prospecting work for rock salt (potash salt) depo sits, we have summarized a suite of reasonable geological and geophysical pros pecting procedures, which play the function of reducing target areas, accelera ting the course of the work and cutting down the investment, thus yielding good economic benefits. |
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