由滨海相沉积样品反映的东南沿海海岸升降速率

收集了闽、粤、桂、琼4省（区）海岸带的^14C测年自45000aB.P.以来共490个演海相样品，依据文献1]广东中山石歧45000aB.P，以来的渐进上升水动型海平面变化曲线，计算了相应地区晚更新世及全新世以来海岸地壳的升降速率，结果表明，除粤西和粤东一些地区及海南省外，东南沿海海岸部份地壳的升降速率，结果且明，除粤西和粤东一些地区及海南省外，东南沿海海岸份地区晚更新世及全新世时期和中期地壳主要表现为下沉，全新世中晚期特别是晚期主要反映为上升，珠江三角洲晚更新世中晚期以来主要表现为继承性下沉，现代地壳形孪测量反映的地壳升降较多地区与一述趋向大致相似，广东惠来县东60km下新礁海域及珠江三角洲灯笼沙等15个地区，是地壳升降异常速率较高地区。

Elevation and subsidence rates of southeast coast crust obtain ed by littoral facies sediment samples

The 490 littoral facies samples in carbon 14 in coast areas of Fujian,Guangdong,Guangxi and Hainan since 45000 aB P.are collected,and the rates of elevation or subsidence of coastal crust since Epipleistocene and Holocene has been determined based on the sea level change curve of type of progress step by step since 45000 aB P.in Shiqi,Zhongshan city,Guangdong province in this paper.The results show that besides some regions of the east and west of Gangdong aud Hainan,the partial area of southeast China coastal crust mainly appears to be subsidence in the early and late of Epipleistocene and Holocene,and it appears to be elevation in the middle and late of Holocene.The results of the deformation survey of recent crust are similar to above-entioned conclusions.It is discovered that the 15 regions such as the east 60 km to Huilai country,Guangdong and Denglongsha in Pear River Delta are the high rate regions of the recent crust elevation or subsidence.