Evidence of Paleo Sea Level Change in Middle Holocene, Lower Part of Sating-Pra Peninsula Region, Southern Thailand

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Banchong Tongsang

Abstract

An analysis of physical change with scientific evidences is necessary. Sedimentological and paleontological analysis from the lower part of Sating-Pra peninsula at Universal Transverse Mercator (UTM) 47N 662092 809281. Thermoluminescence dating of sediments at the depth of 50, 100, 150, 200, 250, and 310 cm were 2,181 ± 100, 2,409 ± 680, 3,909 ± 202, 4,057 ± 132, 4,913 ± 206, and 5,298 ± 189 years before present respectively. The relationship between age and depth of sediments were linear. Radiocarbon dating of Gastropodas and bivalvias species at the depth of 200, 250, 280, 300 and 340 cm were 4,590 ± 130, 7,350 ± 160, 5,610 ± 130, 6,550 ± 140, and 5,440 ± 140 years before present respectively. The relationship between age and depth of marine shells were not linear. The age of Gastropodas and bivalvias indicated that, in middle Holocene, the lower Sating-pra peninsula showed mangrove environment in the intertidal zone. Rate of sedimentation from 2,181 ± 100 to 5,298 ± 189 years before present was 0.0734 mm per year. Age of marine shells at 7,350 ± 160 to 4,590 ± 130 years before present corresponded to the middle Holocene sea level highstand. After 4,590 ± 130 years before present or after middle Holocene, mangrove environment of lower Sating-Pra peninsula was replaced by freshwater swamp. The research finding of sedimentation rate could be applied for predicting trends and gradual shallow of Songkhla's Lagoon.

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How to Cite
Tongsang, B. (2021). Evidence of Paleo Sea Level Change in Middle Holocene, Lower Part of Sating-Pra Peninsula Region, Southern Thailand. YRU Journal of Science and Technology, 6(2), 181–189. retrieved from https://li01.tci-thaijo.org/index.php/yru_jst/article/view/245454
Section
Research Article

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