| HHP花岗岩和喷气沉积贱金属硫化物矿床间的成因关系 |
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| 引用本文：沈建忠,张效民.1993.HHP花岗岩和喷气沉积贱金属硫化物矿床间的成因关系[J].地球学报,14(3):137-144. |
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| 中文摘要:热源一直是沉积喷气型块状硫化物矿床成因模式难以解决的阿题．在该类矿床下盘岩石中HHP花岗岩的发现为其问题的解决提供了新途径。HHP花岗岩含有很高的放射性U、Th和K，能长期持续地提供热能．从而在上覆沉积岩中驱动热液对流循环系统。如果保持中等程度高的渗透率．一个宽大于10km的HHP花岗岩驱动并维持热液对流循环系统脉动性地活动10^5-10^4a．耶么温度为235℃．且最初由花岗岩缓冲的还原卤水能提供10Mt铅锌，所以确定HHP花岗岩及其形成时代有助于大型Sedex矿床的发现。 |
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| ON RELATIONSHIP BETWEEN HHP GRANITE AND SEDEX TYPE OF BASE MATAL MASSIVE SULFIDE DEPOSITS |
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| Abstract:The driving heat source has been the unsolved problem encontered in the genetic models of sedimentary-exhalative base matal massive sulfide, the discovery and identification of high-heat-producing granite underlying Sedex deposit provide a new way to clarify this problem. HHP granite exists in the same geologic environment as Sedex deposit and has very high contents in radiogenic U, Th and K, which may drive the hydrothermal convective circulation system in its overlying sediments for the formation of Sedex deposit. |
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