New value of displacement of Bok Bak fault and its implication on the Chuping limestone formation of Kedah and Perlis, Malaysia

Syed Sheikh Almashoor. (2024) New value of displacement of Bok Bak fault and its implication on the Chuping limestone formation of Kedah and Perlis, Malaysia. Bulletin of the Geological Society of Malaysia, 39. pp. 101-104. ISSN 2637-109X

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Abstract

A recent discovery and definition of the extension of 82 kilometres of Bok Bak fault in north Kedah and Perlis makes way for a plausible interpretation of the amount of displacement of the fault. Based on the disposition of two pairs of correlatable rock-units which exhibit similarities in orientation, lithology and microfossil contents on opposite sides of the fault, the displacement is inferred to be about ten kilometres sinistrally. This interpretation has been carried out in an objective manner and therefore its outcome should prevail over earlier ones which are speculative in nature. Apparently the fault displaced Bukit Kepelu, Bukit Mulong and Bukit Kodiang in north Kedah from Bukit Chuping in central Perlis, and these hills are hereby thought to have been once a continuous rock unit of the Chuping limestone formation.

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