1. boulder clay的近义词

1. 泥砾：boulder巨砾;石砾 | boulder clay泥砾 | boulder fan巨砾扇

2. 冰砾泥：boulder 大卵石 | boulder clay 冰砾泥 | boulder concrete 蛮石混凝土

3.

3. 泥砾土：boulder 漂砾 | boulder clay 泥砾土 | bouldery 巨砾的

4. 泥砾 塊狀黏土：bough 大树枝,主枝 巨枝 Y | boulder clay 泥砾 塊狀黏土 N | bound water 束缚水 結合水 N

1. unstratified soil deposited by a glacier
    consists of sand and clay and gravel and boulders mixed together

    Synonym: till