백수조간대의 고환경해석: 해수면의 주기적변동

Abstract

The Baeksu subtidal deposit can be divided into the three sequences (S1, S2 and S3) in descending order. Sequence 1 (S1) can be interpreted as a modern tidal deposits and transgressive stage deposits after LGM. Sequence 2 (S2) was most likely deposited in marginal marshes/central basin of estuarine environment and fluvial-influenced tidal channels. Sequence 3 (S3) mostly formed in the tidal mud flat, marginal salt marsh deposits during Eemian of late pleistocene (Fig. 4). It is thus evident that the Baeksu coasts in the eastern Yellow Sea (Korea) have fully inundated, twice at least, in response to late Quaternary sea-level fluctuations. Each sequence is composed primarily of two depositional units commencing with more onshore, fluvial-influenced deposits overlain by tidal deposits. This sedimentation pattern reflects sea-level variation after MIS 6, the fluvial deposits formed during the lowstand and the tidal deposits formed during transgression and highstand.ly deposited in marginal marshes/central basin of estuarine environment and fluvial-influenced tidal channels. Sequence 3 (S3) mostly formed in the tidal mud flat, marginal salt marsh deposits during Eemian of late pleistocene (Fig. 4). It is thus evident that the Baeksu coasts in the eastern Yellow Sea (Korea) have fully inundated, twice at least, in response to late Quaternary sea-level fluctuations. Each sequence is composed primarily of two depositional units commencing with more onshore, fluvial-influenced deposits overlain by tidal deposits. This sedimentation pattern reflects sea-level variation after MIS 6, the fluvial deposits formed during the lowstand and the tidal deposits formed during transgression and highstand.