但粘土矿物含量的强烈波动可以推断中更新世古气候的强烈波动变化。
Violent climate oscillation occurred during this period, supported by the intense change of clay mineral contents.
石制品八件，发现于陕西乾县大北沟黄土之下砂砾粘土层中，和更新世晚期的哺乳类化石伴存。
Several stone artifacts and some mammalian fossils were recovered in 1963 in the sandy gravels under the Malan Loess at Dabeigou. Qianxian in Shaanxi.
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