| 太平洋大金环的基本特征 |
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| 引用本文：.1990.Basic characteristics of the circum-pacific great gold belt[J].Mineral Deposits,9(3):223~230 |
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| 中文摘要:太平洋大金环由苏联М.И.伊齐克松于1979年在《太平洋区成矿分带》一书中提出，最近十年来太平洋地区进行了许多金矿地质和找矿工作。笔者认为，这一理论对普查金矿有一定的指导意义。笔者根据有关资料探讨了伊齐克松留下来的大金环的三段空白区，论证了大金环的可能连续性。笔者对伊齐克松反复强调的太平洋成矿带和大金环的不对称性问题提出修正意见，认为不对称现象往往是工作程度和研究程度不够的反映，是重要的预测目标和工作突破口。 |
| 中文关键词:太平洋大金环 基本特征 对称性是大金环的主要特征 |
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| Basic characteristics of the circum-pacific great gold belt |
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| Abstract:The concept of “Circum-Pacific Great Gold Belt” was advanced in 1979 by Soviet geologistМ.I.Itsikson in his book Metallogenic Zoning of the Pacific Region. In the past ten years, much geologic and ore prospecting work has been done for gold deposits of the Pacific region, and the author holds that this theory is of some directive significance in prospecting for gold deposits of that region. Based On the data available, this paper deals tentatively with the three blank sections left by Itsikson in his great gold belt, and expounds and proves the probable continuity of this belt. The basic characteristics of this great gold belt are shown in six aspects: (1)continuity and completeness; (2)multi-layered concentric ring structure; (3)transference of metallogenic epoch and ore-forming intensity towards the ocean; (4)equi-distance of metallogeneses; (5)control of gold-concentrated areas by deep fault networks; (6)obvious symmetry, which seems to be the major feature of this gold belt. The author puts forward some amendments on unsymmetry of the Circum-Pacific metallogenic belt and the great gold belt which was repeatedly emphasized by Itsikson, and considers that the unsymmetry seems likely a retiection of insufficient work and is also the important prognostic target and the breach in further investigation. |
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