Bulletin of the Geological Society of Malaysia, No. 66, December 2018, pp. 65 – 74
Tracy Binti Guan Leong*, Sanudin Hj. Tahir & Junaidi Asis
Program Geologi, Fakulti Sains & Sumber Alam, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia
*Corresponding author email address: tracyguanleong@gmail.com
Abstrak: Kajian ini dijalankan bertujuan untuk mengkaji stratigrafi di barat daya Sabah. Kawasan kajian terdiri daripada Formasi Temburong, Formasi Crocker, Formasi Meligan dan Formasi Liang. Melalui kajian yang dijalankan, Formasi Temburong didapati mendasari Formasi Crocker dari segi kedudukan jujukan stratigrafi yang selama ini dianggap sebaliknya. Ini bermaksud, kedudukan jujukan stratigrafi Formasi Temburong yang dahulunya dianggap berada di atas Formasi Crocker kini ditafsir mendasari Formasi Crocker. Analisis fasies, kajian sekutuan fasies dan korelasi unit-unit litostratigrafi di kawasan kajian banyak membantu dalam mentafsir stratigrafi dan memperbaharui kedudukan stratigrafi bagi jujukan Paleogen. Formasi Temburong serta Formasi Crocker kedua-duanya berusia Eosen Atas hingga Miosen Bawah manakala Formasi Meligan berusia Miosen Tengah hingga Miosen Atas dan Formasi Liang berusia Pliosen.
Kata kunci: Formasi Temburong, Formasi Crocker, Formasi Meligan, Formasi Liang, Paleogen, litostratigrafi, Eosen, Miosen, Pliosen
Abstract: This study is aimed to study the stratigraphy in southwest Sabah. The study area consists of Temburong Formation, Crocker Formation, Meligan Formation and Liang Formation. Through the study, the Temburong Formation was found to be underlying the Crocker Formation in terms of stratigraphic sequence position which has been considered otherwise. This means that the position of stratigraphic sequence of Temburong Formation which was previously considered to be above the Crocker Formation is now being interpreted below the Crocker Formation. Facies analysis, facies association studies, cross-sectional studies, litostratigraphic studies, and correlation of litostratigraphic units in the study area helped to interpret the stratigraphy and update the position of stratigraphy for the Paleogene sequences. The Temburong Formation and Crocker Formation are both dated as Upper Eocene to Lower Miocene while the Meligan Formation is Middle Miocene to Upper Miocene and Liang Formation is Pliocene.
Keywords: Temburong Formation, Crocker Formation, Meligan Formation, Liang Formation, Paleogene, litostratigraphic, Eocene, Miocene, Pliocene
https://doi.org/10.7186/bgsm66201809
