渤海莱州湾南岸平原黄土阜地貌及其古地理意义

LOESS MOUNDS ON THE LAIZHON BAY PTAIN SOUTH OF BOHAI SEA AND THEIR PALEOGEOGRAPHIC IMPLICATION

在莱州湾南岸滨海平原上发现一种新地貌类型黄土阜。研究表明，它形成于晚更新世晚玉木冰期。在此寒冷时期，渤海曾水退为平原，由于极少植被覆盖，形成陆架荒漠。裸露的海底松散沉积物被强劲的北风向南吹扬搬运，于南岸平原有利地形位置上沉积下来，形成厚层砂质黄土，并顺风向形成了阜状黄土地貌。

The loess mounds are a newly discovered type of landforms on the Laizhou Bay Plain south of the Bohai Sea. Research shows that they were formed in the late period of the Late Pleistocene when the Bohai Sea was esxposed in the period of the late warm ice age and the plain was formed. because the exposed area is not protected by vegetation, the sediments at the sea bottom are blown and transported southward by strong northern winds, and are deposited on the coastal plain. As thick loess layers were formed, the loess mound landforms were formed.