A new evidence of a higher Quaternary sea-level in Langkawi Islands

Zaiton Harun and Basir Jasin and Kamal Roslan Mohamed (1999) A new evidence of a higher Quaternary sea-level in Langkawi Islands. Bulletin of the Geological Society of Malaysia, 43. pp. 503-511. ISSN 2637-109X

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Abstract

Shell deposits were observed at a wave-cut notch on the Setul Limestone in Pulau Tanjung Dendang, Langkawi. The elevation of shell deposits is approximately 23 m above the present sea-level. The most reliable sea-level marker is Saccostrea cuccullata which is found encrusted on the Setul Limestone. Radiocarbon ages of the two samples Saccostrea cuccullta are 6,970 ± 120 and 7,090 ± 100 yr. B.P. This indicates that the maximum Holocene sea-level reached 23 m above the present sea-level during 7,000 yr. B.P. This is the highest sea-level indicator reported in this region. This discovery provides a new information about the sea-level curve prior to 6,000 yr. B.P.

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