ABSTRACT The paleochannel of the Wenhekou–Liudaokou reach of the Yihe River was investigated using electrical soundings along the Zhuyong and Chuanliujie cross sections and drilling at the Chuanliujie cross section. Drilling data from the Liuhang Rubber dam and the Jiefang, Taoran, Yihe, and Luocheng road bridges were also used. Seven stratigraphic cross sections of the Yihe River paleochannel were confirmed based on electrical sounding and drilling, and samples were collected for 14C and optically stimulated luminescence dating near Zhuyang village, Chuanliujie village, Liuhang Rubber dam, south bank of the Benghe River bridge, and the riverbed near the Yihe Road bridge. The dating results suggest that the channels below 76.0, 70.0, 69.5, 55.1, 52.4, 56.5, and 56.4 m near Zhuyang village, Chuanliujie village, Liuhang Rubber dam, Jiefang Road bridge, Taoran Road bridge, Yihe Road bridge, and Luocheng Road bridge are paleochannels of the Yihe River during the Last Glacial Maximum (LGM). Lithology of the riverbed is complex and characterized by fracture zones. This reach of the river was braided with high width–depth ratios and the deep, incised valley at the Jiefang and Taoran road bridges was formed by a regional deep cut during the LGM.

中文翻译：

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山东省末次盛冰期沂河古河道形态特征

摘要 利用沿竹庸和川流街断面的电测深和在川流街断面的钻孔，对沂河文河口-六道口河段的古河道进行了调查。还使用了刘杭橡胶坝和解放、陶然、沂河和洛城公路桥梁的钻孔数据。电测深和钻探确认了沂河古河道7个地层断面，在竹阳村、川流街村、流杭橡胶坝、汴河大桥南岸附近采集样品进行了14C和光激发光测年。颐和路桥附近的河床。测年结果表明，76.0、70.0、69.5、55.1、52.4、56.5和56.4 m以下的河道在朱杨村、川流街村、柳杭橡胶坝附近，解放路桥、陶然路桥、沂河路桥、洛城路桥是末次盛冰期沂河古河道。河床岩性复杂，以断裂带为特征。这条河段呈高宽深比辫状，解放路桥和陶然路桥的深切河谷是LGM期间区域性深切形成的。