晚更新世末期，强劲古季风活动的结果，在中国西部形成沙漠－黄土堆积群（黄土高原及其以西或西北的沙漠区），当它到达陆架区以后，风蚀作用继续存在，会产生同样的地质效果，因而在中国东部陆架区，形成两个新的沙漠－黄土堆积群。其一为渤海沙漠－黄土堆积群，包括渤海海底、渤海海岸一带的古沙漠活动区和辽东半岛西岸、庙岛群岛以及山东蓬莱以西的含有孔虫的黄土沉积。其二为黄海沙漠－黄土堆积群，包括苏北浅滩和长江三角洲地区全新世以前的沙漠活动区和南京一带的下蜀黄土 As a result of the strong Arctic monsoon activity in the late Late Pleistocene, the formation of a desert-loess massif (western Loess Plateau and its west or north-western desert) in western China, when it reached the shelf area, wind erosion continued to occur, producing the same Geological effects, so in the eastern shelf of China, the formation of two new desert - loess accumulation group. One is the Bohai Sea desert-loess accumulation group, which includes the paleo-desert activity areas along the Bohai Sea and the Bohai Sea coast, and Loess sediments containing foraminifera west of the Liaodong Peninsula, the Miaodao Islands and the west of Penglai, Shandong Province. The second is the Yellow Sea desert - loess accumulation group, including the northern margin of the Beibu and the Yangtze River Delta before the Holocene desertification activity area and the Nanjing area of ​​the Xiashu Loess