A sedimentological study at Bukit Belah, Batu Pahat, Johor

702001-100708-506-B
Author : Nur Syamsiah Abdul Majid & Uyop Said
Publication : Bulletin of the Geological Society of Malaysia
Page : 283-286
Volume Number : 45
DOI : https://doi.org/10.7186/bgsm45200243

Bulletin of the Geological Society of Malaysia, Volume 45, May 2002, pp. 283 - 286

 

A sedimentological study at Bukit Belah, Batu Pahat, Johor

Nur Syamsiah Abdul Majid & Uyop Said

Program Geologi, Pusat Pengajian Sains Sekitaran & Sumber Alam, Fakulti Sains & Teknologi Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor D.E., Malaysia

 

Abstract: A sedimentological study was carried out at Bukit Belah, Batu Pahat, Johor which was interpreted by previous workers as part of the Bukit Payong Formation. The study area consists of three main sedimentary facies, namely conglomerate facies, sandstone facies and siltstone facies. In general, the sandstone is thickly-bedded and relatively more dominant than the conglomerates. At some localities, the sandstone is interbedded with siltstone and mudstone. Based on petrographic study, the Bukit Belah sandstone can be classified as lithic arenites, quartz arenites, arkose wacke and quartzose wacke sandstone. Several sedimentary structures were identified in the study area such as parallel lamination, cross lamination and graded bedding. The rock sequence shows a fining upward sequence and together with the presence of some sedimentary structures, it is interpreted that the sediments were deposited in a braided river system.

 

Abstrak: Kajian sedimentologi telah dijalankan di kawasan Bukit Belah, Batu Pahat, Johor yang ditafsirkan oleh pengkaji terdahulu sebagai sebahagian daripada Formasi Bukit Payong. Kawasan kajian terdiri daripada tiga fasies utama iaitu fasies konglomerat, fasies batu pasir dan fasies batu lodak. Konglomerat kebanyakannya terdiri daripada jenis sokongan matrik dan masif. Batu pasir umumnya wujud dalam lapisan tebal dan lebih dominan berbanding konglomerat. Di beberapa lokaliti, batu pasir ini wujud sebagai selang lapis bersama batu lodak dan lumpur. Berdasarkan analisis petrografi, batu pasir Bukit Belah boleh dikelaskan kepada arenit litik, arenit kuarza, wak kuarza dan wak arkos. Beberapa struktur sedimen juga dapat dikenal pasti seperti laminasi selari, laminasi silang dan penggredan. Batuan sedimen ini menunjukkan jujukan menghalus ke atas dan kehadiran struktur sedimen dapat ditafsir sekitaran pengendapan merupakan sekitaran sungai berburai.

https://doi.org/10.7186/bgsm45200243