Sains Malaysiana 45(12)(2016): 1897–1904

http://dx.doi.org/10.17576/jsm-2016-4512-14

 

Fasies dan Sekitaran Sedimen Formasi Singa di Langkawi, Malaysia

(Facies and Sedimentary Environment of Singa Formation of Langkawi, Malaysia)

 

MOHAMAD HANIF KAMAL ROSLAN, CHE AZIZ ALI* & KAMAL ROSLAN MOHAMED

 

Pusat Penyelidikan Langkawi, Institut Alam Sekitar dan Pembangunan (LESTARI)

Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia

 

 

Received: 10 May 2016/Accepted: 22 September 2016

 

ABSTRAK

Batuan Formasi Singa yang terdiri daripada batu lumpur dominan, berselang lapis dengan batu lodak, batu pasir dan juga sedikit unit konglomerat tertabur secara meluas di kepulauan Langkawi. Formasi Singa boleh dibahagikan kepada sepuluh fasies sedimen dan empat sekutuan fasies. Keputusan kajian menunjukkan Formasi Singa telah terendap di lautan cetek, iaitu di sub-sekitaran luar pesisir, transisi, muka pesisir serta dalam alur. Lautan cetek Lembangan Singa dipengaruhi oleh iklim sejuk kerana terdapat sedimen asalan glasier, iaitu fasies batu lumpur berpebel. Kertas kerja ini akan menjelas dan membincangkan segala aspek sedimentologi formasi batuan ini.

 

Kata kunci: Analisis fasies; Formasi Singa; sedimentologi

 

ABSTRACT

Rocks of the Singa Formation are widely distributed in Langkawi. The formation dominantly consists of mudstones interbedded with siltstone, sandstone and conglomerate units. the Singa Formation can be divided into ten types of sedimentary facies and four types of facies association. Based on facies analysis, the Singa Formation is interpreted to have been deposited in offshore, offshore-transition and shoreface environments and also in channel. This shallow marine of the Singa Basin are affected by cold climates, because there are glacial sedimentary deposits namely pebbly mudstone facies. This paper will describe and discuss all aspects of sedimentology for this formation.

 

Keywords: Facies analysis; sedimentology; Singa Formation

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*Corresponding author; email: che@ukm.edu.my