根据南极菲尔德斯半岛海岸阶地面上苔藓泥炭层剖面上、中、下 3层泥炭的14 C数据 ,推得该苔藓泥炭层上段的平均累积速率为 0 .1 95mm·a-1,下段为 0 .0 6 94mm·a-1.由下部苔藓泥炭的14 C数据和下段平均累积速率 ,推得该地区海拔 1 8m的海岸阶地形成时间应略早于430 0aBP ,且自 430 0aBP以来这里的海滩一直处于稳定上升状态 .相应这个地区的冰盖解体与冰退过程也应早于 430 0aBP . According to the 14 C data of the upper, middle and lower peat layers in the moss peat layer on the coastline of Field Peninsula in Antarctica, the average accumulation rate of the upper peat layer in the moss is 0.195 mm · a-1 and the lower section is 0 .0 6 94mm · a-1. From the 14 C data of the lower moss peat and the average accumulation rate of the lower segment, it is estimated that the formation time of the coast terrace 18 m above sea level should be slightly earlier than 430 0aBP and the beach here since 430 0aBP Has been in a steady state of rise, corresponding to the ice sheet collapse and ice retreat in this area should be earlier than 430 0aBP.