Permian sequence from Sungai Itau quarry, Langkawi: Its age, depositional environment and palaeoclimatic implication

702001-100720-527-B
Author : Mohd Shafeea Leman & Asmaniza Yop
Publication : Bulletin of the Geological Society of Malaysia
Page : 163-170
Volume Number : 45
DOI : https://doi.org/10.7186/bgsm45200225

Bulletin of the Geological Society of Malaysia, Volume 45, May 2002, pp. 163 - 170

 

Early Permian sequence from Sungai Itau quarry, Langkawi: its age, depositional environment and palaeoclimatic implication

Mohd. Shafeea Leman and Asmaniza Yop

School of Environmental Sciences and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan

 

Abstract: A sequence of thickly bedded sandstone, massive mudstone, silty shale and massive sandstone exposed at a quarry in Kampung Sungai Itau, Langkawi is described herein. In the lower part, sandstone with calcareous horizons is rhythmically interbedded massive black pebbly mudstone or diamictite indicates sea level fluctuation influenced by glaciation and deglaciation of the Gondwana supercontinent. The deposition took place in the outer shelf. The silty shale yields an Early Permian (late Asselian-Sakmarian) brachiopod assemblage of strong Gondwanan affinity. The massive sandstone on the top part of the section represents a storm deposit.

 

Abstrak: Makalah ini memperihalkan mengenai jujukan lapisan tebal batu pasir, batu lumpur masif, syal berlodak dan batu pasir masif yang tersingkap di kuari Kampung Sungai Itau, Langkawi. Di bahagian bawah jujukan, batu pasir dengan lapisan berkapur berselang berirama dengan batu lumpur masif hitam berpebel atau diamiktit menunjukkan perubahan aras laut yang dipengaruhi pengglasieran dan pencairan glasier di superbenua Gondwanaland. Pengenapan batu lumpur berpebel ini berlaku di pelantar luar. Syal berlodak mengandungi himpunan brakiopod berusia Perm Awal (akhir Asselian-awal Sakmarian) yang banyak kesamaan dengan fauna Gondwana. Batu pasir masif di bahagian atas jujukan Sungai Itau merupakan enapan ribut.

https://doi.org/10.7186/bgsm45200225