论动力热液成矿作用

本文提出动力热液成矿作用的概念、特点、形成机制和热液矿床的新分类。动力热液作用极为常见,它所形成的矿床具有与其他热液矿床极不相同的特点,突出地表现在:成矿物质均系来自围岩,就地成矿;矿脉形态复杂多样、大小不等,且不生根,其分布仅局限于构造破碎带(形变带)之中,同期的矿脉和脉石脉在断裂带的不同构造岩分带中,其形成温度常不相同;不显围岩蚀变。笔者认为,层控矿床主要是通过各种成因的热液对矿源层或贫矿层的改造而成,对矿源层的改造动力热液是起着主要的作用。

ON THE DyNAMO-HYDROTHERMAL METALLOGENESIS

In this article the writer puts forward the concept, the characteristics and the formational mechanism of the dynamo-hydrothermal metallogene-sis. He also classifies the hydrothermal deposits. The dynamo-hydrothermal action is an extremely common metallogenesis.As compared with other hydro- thermal deposits, the ore deposits formed by the dynamohydrothermal activity are of extremely different characteristics,which are remarkably shown in the following aspects:1. All the ore-forming substances came from the country rocks, forming the ore veins on the spot;2. The shape of the ore-body is very complicated and the size changes greatly. All the ore-bodies occurred just within the fractured zone. No roots can be found for each body;3. The ore veins and the gangue veins occurring in the same period may be formed under different temperatures in the different tectonite zonings of the faulted zone;4. The alteration of the country rocks is not clear.The author believes that the stratabound are deposits were formed the reformation of the ore-resource beds and the poor ore-beds by various genetic hydrothermal liquids. In the reformation process the dynanlo-hydrothermal was playing an important part.