Bulletin of the Geological Society of Malaysia, Volume 51, June 2005, pp. 31 – 39

Triassic Radiolarian Biostratigraphy of the Semanggol Formation, South Kedah, Peninsular Malaysia

BASIR JASIN, ZAITON HARUN AND UYOP SAID

Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia.

Abstract: Twenty-seven taxa of the Triassic radiolarian faunas have been identified from seven chert samples collected from an outcrop exposed at a construction site 4.5 km east of Kuala Ketil, south Kedah. The faunas were divided into four assemblage zones: Entactinosphaera chiakensis Zone, late Spathian, Triassocampe coronata Zone, middle Anisian, Triassocampe deweveri Zone, late Anisian and Oertlispongus inaequispinosus Zone, early Ladinian. The radiolarian assemblages indicate an age ranging from late Spathian to early Ladinian, Triassic.

Abstrak: Dua puluh tujuh taksa radiolaria Trias telah dikenal pasti daripada tujuh sampel rijang diambil daripada satu singkapan yang terdedah pada tapak binaan 4.5 km di timur Kuala Ketil, selatan Kedah. Fauna dibahagikan kepada empat zon himpunan: Zon. Entactinosphaera chiakensis, Spathian akhir, Zon Triassocampe coronata, Anisian tengah, Zon Triassocampe deweven, Anisian akhir dan Zon Oerlispongus inaequispinosus, Ladinian awal. Himpunan radiolaria menunjukkan julat usia dari Spathian akhir hingga Ladinian awal, Trias.

https://doi.org/10.7186/bgsm51200505