...，第四系冲洪成因（Qml+pl）的淤泥＜2-1＞、粉质粘土＜ 2-3＞、粉细砂＜2-3＞、中粗砂＜2-4＞、粉质粘土＜2-5＞和残积成因（Qel）的粉 质粘土＜3-1＞、＜3-2＞，下伏基岩主要为白垩系的泥质粉砂岩。
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本文提出该矿床为古风化淋积成因的新认识。
In this paper, a new recognition is presented that the genesis of this ore deposit is anciently weathered eluvial deposit.
合肥地区膨胀土形成于第四纪上更新世Q_3及其以前，属江淮冲积、洪积成因类型。
The swelling soil in Hefei zone was formed at the Q3 epipleistocene of the 4th subage or before. It belongs to the type of Huaihe alluviation and diluvion.
与成矿关系密切的岩石为浊积岩成因。
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