Holocene sea level changes in Peninsular Malaysia

702001-100705-503-B
Author : Kamaludin Bin Hassan
Publication : Bulletin of the Geological Society of Malaysia
Page : 301-308
Volume Number : 45
DOI : https://doi.org/10.7186/bgsm45200246

Bulletin of the Geological Society of Malaysia, Volume 45, May 2002, pp. 301 – 308

 

Holocene sea level changes in Peninsular Malaysia

Kamaludin Bin Hassan

Minerals and Geoscience Department Malaysia, Jalan Penampang, 88999 Kota Kinabalu, Sabah

 

Abstract: In Holocene sea level study, the selection and identification of appropriate sea level indicator is a prerequisite in order that the sea level index points can be useful and significant. This requires the identification and determination of the indicative meaning. The indicative meaning of the sea level indicator is defined as the altitudinal relationship of the local environment in which it accumulated to the contemporaneous reference tide level.

This study identifies the sea level index points using the litho-, bio-, and chrono- stratigraphic approach. The sea level indicator is derived from the regressive contact of the intercalated peat and marine Holocene sequences from Meru and Mardi in Kelang and Penor in Kuantan, while the indicative meaning is estimated based upon the microfossil relationship between the fossil sea level indicator with contemporary samples from various present-day ecological environments.

Seven sea level index points identified in the study are compared to the corrected sea level indicator data from earlier works. In Peninsular Malaysia, a general trend of high sea level from about mid-Holocene to the present is depicted.

 

Abstrak: Di dalam kajian paras laut Holosen, untuk menjadikan sesuatu titik indeks paras laut itu berguna, pemilihan dan kenalpasti penanda paras laut adalah penting. Ini memerlukan kepada mengenalpasti dan menentukan "indicative meaning" sesuatu penanda paras laut itu. "Indicative meaning" penanda paras laut diertikan sebagai hubungan ketinggian persekitaran setempat dimana sesuatu penanda paras laut itu telah dihimpun/dilonggok dibanding dengan aras pasang surut semasa.

Kajian ini mengenalpasti titik indeks paras laut menggunakan pendekatan "litho-, bio-, dan chrono-" stratigrafi. Penanda paras laut adalah didapati dari sentuhan menurun perlapisan gambut dan samudera Holosen yang dikenalpasti di Meru dan Mardi di Kelang dan Penor di Kuantan. "Indicative,meaning" penanda paras laut itu pula dianggar mengikut hubungan fosil-mikro di penanda paras laut dengan yang didapati di sample semasa, diambil dari pelbagai persekitaran ekologi paya pesisir pantai.

Tujuh titik indeks paras laut dikenalpasti dari kajian ini dan di bandingkan dengan data paras laut dari kajian terdahulu, yang telah diperbetulkan. Pada amnya di Semenanjung Malaysia, paras laut didapati tinggi dari pertengahan Holosen sehingga sekarang.

https://doi.org/10.7186/bgsm45200246