地貌条件与砂金的分布地貌特征是一个地区长期以来,内外地质作用的产物,尤其第三纪晚期以来的新构造运动对地壳外貌作用更为明显。地貌对砂金的富集起着极为重要的作用。实际情况表明,尽管有含金的物质来源而没有适当的地貌条件,也不会形成工业矿床。我国砂金矿床(点)大多数分布于山岳地带,如大、小兴安岭、长白山、阿尔泰山、秦岭、天山、龙门山、雪峰山、幕府山、云开大山等山区,在构造上这些山区多属褶皱隆起带,经强风化剥蚀(侵蚀)作用,为砂金沉积区提供了丰富的物质来源,而砂金的形成又要适合的地形场所。
The distribution features and geomorphic conditions of placer gold is an area for a long time, product geological action, especially the new tectonic movement since the late third century of the earth's crust appearance effect is more obvious. Physiognomy of placer gold enrichment plays an extremely important role. The actual situation shows that, in spite of the material source of gold, there is no appropriate topographic conditions, it will not form a industrial deposit. Our placer gold deposits (points) are mostly distributed in the mountain area, such as the size of the Xingan mountain, Changbai Mountain, Taishan, Qinling Mountains, Tianshan, Altai mountain, Longmen, Xuefeng Mufu, Yunkai mountain, in the structure of these mountain fold uplift, with strong weathering and erosion (erosion), provide a rich source of material for gold deposition area, and the formation of placer gold and suitable for terrain places.
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