The depositional environment of the Mid-Palaeozoic red beds at Hutan Aji, Perlis and its bearing on global eustatic sea level change


Author : Meor Hakif Hassan & Lee Chai PengPublication : Bulletin of the Geological Society of MalaysiaVolume : 48Page : 65-72Year : 2004


Description

Bulletin of the Geological Society of Malaysia, Volume 48, June 2004, pp. 65-72

 

The depositional environment of the Mid-Palaeozoic red beds at Hutan Aji, Perlis and its bearing on global eustatic sea level change

MEOR HAKIF HASSAN & LEE CHAI PENG

Geology Department, University of Malaya, 50603 Kuala Lumpur

 

Abstract: Late Devonian - Early Carboniferous red coloured mudstones and sandstones are widely distributed in northwest Peninsular Malaysia. A relatively complete and well preserved sequence is exposed at Bumita Quarry, Hutan Aji, Perlis, and is described herein. The facies associations observed are indicative of a marine prodelta-delta front depositional environment for the Mid-Palaeozoic red beds. A thin (9m) black mudstone facies in the middle of the Bumita Quarry sequence may represent the Latest Devonian Hangenberg Anoxic Event. The occurrence of a Mid-Palaeozoic orogeny is refuted. The major regression just after the global Hangenberg Event transgressive episode is proposed as the cause of the major, pre-Carboniferous paraconformity observed in mid-Palaeozoic successions of the Sibumasu/Shan-Thai Terrane.

 

Abstrak: Batu lumpur dan batu pasir merah berumur Devon Akhir - Karbon Awal tersingkap secara meluas di beberapa bahagian barat laut Semenanjung Malaysia. Satu turutan Devon Akhir-Karbon Awal yang hampir lengkap terdedah di Kuari Bumita, Hutan Aji, Perlis, diperihalkan di sini. Gabungan-gabungan fasies yang dikenalpasti di lapangan ditafsirkan sebagai menunjukkan sekitaran enapan palaeo prodelta - hadapan delta marin bagi batuan merah Palaeozoik Tengah ini. Kehadiran fasies batu lumpur hitam yang nipis di tengah-tengah turutan Kuari Bumita mungkin mewakili Peristiwa Anoksik Hangenberg yang berlaku pada Akhir Devon. Tiada peristiwa orogen berumur Palaeozoik Tengah yang berlaku pada benua Sibumasu/Shan - Thai. Regressi pasca Peristiwa Hangenberg dicadangkan sebagai punca paraselarasan berumur pra-Karbon yang diperhatikan dalam turutan batuan benua Sibumasu/Shan-Thai.

https://doi.org/10.7186/bgsm48200414