Continental shelf drift deposit indicates non-steady state Antarctic bottom water production in the Holocene

A late Quaternay, current-lain sediment drift deposit over 30 metres in thickness has been discovered on the continental shelf of East Antarctica in an 850 metre deep glacial trough off George Vth Land. Radiocarbon dating indicates that a period of rapid deposition on the drift occurred in the mid-Holocene, between about 3 000 and 5 000 years before present.

在南极东部乔治五世地外850米深的冰川槽中，大陆架上发现了一处厚度超过30米的晚第四纪（Late Quaternary）水流成因沉积漂移体。放射性碳定年（Radiocarbon dating）结果表明，该漂移体的快速沉积期发生于中全新世（mid-Holocene），即距今约3000至5000年前。