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砂矿中砂金粒度和形态变化特征,对阐明砂矿中砂金分布规律、砂金机械搬运形式和沉积条件、古河网或砂矿体的空间分布及其补给关系等具有重要的实际意义.
It is of great practical significance to clarify the distribution law of as-deposited gold in sand ores, the form and deposition conditions of mechanical conveying of sand and gold, the spatial distribution of the ancient river network or sand ores and their replenishment relations.