中国南方第四纪阶地砾石层分布非常普遍,前人对此作了不少工作。但因缺乏古生物资料,其时代尚无定论。由于本区砾石层分布广,造成了进行地层划分和对比时的不少混乱情况,有时甚至把从几米到百多米的阶地砾石层泛称为“白沙井砾石层”。目前几乎所有全国性的第四纪地 Quaternary terraces in southern China gravel layer distribution is very common, predecessors made a lot of work on this. However, due to the lack of paleontological information, its age is inconclusive. Due to the wide distribution of gravel layers in this area, many confusion occurred during stratigraphic division and comparison, sometimes even terraform gravels ranging from a few meters to more than 100 meters were referred to as “white sand well gravel.” Almost all of the nation’s Quaternary