Speaker
Description
Abstract. This research aims to study of the ancient sea conditions of Sating-Pra Peninsula. Samples of marine mollusks and wood dating by radiocarbon technic. The results showed that marine mollusks at UTM 47N 0647185 0861978 at a depth of +2.00, +1.28, +0.52 and -0.46 m from mean sea level (MSL), the ages are 7,030 ± 360, 6,540 ± 340, 6,630 ± 380 and 10,160. ± 700 years before present respectively. The wood sample at UTM 47N 0638240 0868179 at a depth of 2.0 m from MSL, the age was 7,720 ± 420 years before present. The results indicated that the Sating-Pra Peninsula was a sea from the beginning of the Holocene period 10,000 years ago to the middle of the Holocene period at the highest sea level. The remains of marine mollusks indicate that the ancient sea in the Sating-Pra Peninsula is the coastline in the mangrove forest ecosystem. The remains of the topmost sea shell at a depth of +2.00 m above MSL were 7,030 ± 360 years, which is 6,540 ± 340 years and 6,630 ± 380 years longer, corresponding to the age of the wood at depth. +2.00 m above MSL was 7,720 ± 420 years before present, likely caused by anomalous violent waves after 6,540 ± 340 years before present.
