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Abstract

The study on sea-level changes in Neolithic age started from confirming Layers of abraded shells found at Sugari shell-midden. But, It is not acceptable that way because there isn’t enough inspection to clear the source of forming abraded shells, and the evidence is not enough that the sea-level rose up to 7m around Paleo-Gimhae bay. In this paper, I tried to re-examinate the existing studies on sea-level changes of Gokimhae bay, and then presumed the change process of sea-level in Neolithic period. But The sea-level can be reconstructed at the point of time being results of C14 dating, so that most of studies are concentrated at about 6000B.P., 4300B.P.(4100B.P.) and after 4000B.P.. Using these studies and lately added Archaeological materials, I tried to make a settlement of the range of Sea-level at each point of time studied and measured. As a result, It is supposed that the sea-level around 6000B.P. was in the range of -1.3~1.153m in the Nakdong River delta located at Sugari shell-midden. after then until 5000B.P., It is thought that the sea-level had become calm swinging in narrow limits. About 4300B.P.(4100B.P.), The sea-level must have existed in -0.4~2m. Since 4000B.P., The sealevel showed a little falling down, but It is difficult to give a more investigation for no more good data. It is presumed that the sea-level rose up to 2.6m again and before long became brackish water after Three-Han period, through a sandbar was made adjoining Yeanri site and a landing pier facility has found in Yulha-Gwandongri site. The range of sea-level at each time suggested above is going to be narrow according to an increase in data.