한국 남해 대륙붕의 패류와 해수면 곡선

Abstract

Molluscan shells were sampled from the continental shelf of South Sea in order to understand characteristics of sea level changes and molluscan fauna since the last glacial period. Radiocarbon dates were made on 47 dominant and specific species which were sampled from 31 stations. Radiocarbon ages were determined either by accelerator mass spectrometry (AMS) or by liquid scintillation counter (LSC) methods. These results were shown in Fig. 1. The sea-level was ranging from -150 to -160m during LGM (about 15,000 yrBP). The sea-level rose to -60m at 9,000 yrBP and was stable in a range of -50 to -60m between about 9,000 and 4,300 yrBP. Between about 4,300 and 3,600 yrBP, the sea-level rapidly rose to a depth of 20m below present level and was stabilized between about 3,600 to 740 yrBP. It rapidly rose again to present level after 740 yrBP. Glycymeris Fauna were dominant in the southeast continental shelf between about 9,000 and 4,300 yrBP. Arca fauna including Arca boucardi were dominant in the southwest continental shelf between 3,600 and 740 yrBP.