早更新世晚期，中更新世初期，第三排褶皱开始形成。
The third fold developed between late early Pleistocene and early Middle Pleistocene.
从而以本文划分的早、晚期为经、以地域为纬，大致勾勒出该地区夏时期“多重结构的”考古学文化特征的形成过程。
This paper gave a brief account of the multiple culture structure of this area , at the early and late period.
上新世晚期，早更新世初期，第二排褶皱开始形成。
The second fold developed between late the Miocene and the initial stage of Early Pleistocene.
上新世晚期，早更新世初期，第二排褶皱开始形成。
The second fold developed between late the Miocene and the initial stage of Early Pleistocene.
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