| 浅谈冲积型砂金矿床成矿模式——以陕西月河砂金矿床为例 |
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| 引用本文： | 邓金利.浅谈冲积型砂金矿床成矿模式——以陕西月河砂金矿床为例[J].陕西地质,1993(2). |
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| 作者姓名： | 邓金利 |
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| 作者单位： | 陕西省地质矿产局第七地质队 陕西省石泉县古堰，725231 |
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| 摘 要： | 本文通过对砂金矿床形成过程的分析认为:在地壳局部下沉过程中,砂金在水等强应力作用下,与砾石、砂一起进入沉积盆地,形成砂金的中间储存体;随着地壳的间歇性上升,在蛇曲河流的作用下由于砂金与砾石的运动规律相仿,故和砾面一起被保留在河流冲刷面上的河床滞留砾石沉积中。当地壳多次间歇性上升后,使砂金中间储存体中分散的砂金集中富集在河床滞留砾石层中,从而形成砂金矿床。
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| 关 键 词： | 冲积砂金矿床 砂金中间储存体 成矿模式 |
PRELIMINARY DISCUSSION ON TIIE METALLOGENIC MODEL OF ALLUVIAL TYPE GOLD PLACER |
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| Deng Jinli The Geological Team No. of the Shaanxi Bureau of Geology and Mineral Resources,Guyan,Shiquan County,.PRELIMINARY DISCUSSION ON TIIE METALLOGENIC MODEL OF ALLUVIAL TYPE GOLD PLACER[J].Geology of Shaanxi,1993(2). |
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| Authors: | Deng Jinli The Geological Team No of the Shaanxi Bureau of Geology and Mineral Resources Guyan Shiquan County |
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| Affiliation: | Deng Jinli The Geological Team No.3 of the Shaanxi Bureau of Geology and Mineral Resources,Guyan,Shiquan County,725231) |
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| Abstract: | The metallogenic model of alluvial type gold placer is put forward by the author in this paper,according to analysis on the formation process of gold placer.It is considered that gold placer gets into sedimentary basin together with gravel and sand by strong stress,such as water,during the process of downgoing of local earth crust.Thus,an intermediate store body of formation gold placer was formed.Being raised earth crust intermittently,havigng affected of sanking stream,gold placer and gravel were retained in sediments of detention gravel in river bed,owing to gold placer is similar to gravel in respect of movement regularity.Then, dispersal gold placer within the intermediate store body was enriched in gravel bed of deten- tion in river bed after many times intermittent elevation,and the gold placer deposit was formed. |
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| Keywords: | alluvial type gold placer intermediate store body of gold placer metallogenic model |
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