June 3, 2009
June 2, 2009
Main Range Granites
The Main Range granites of Peninsular Malaysia form the backbone mountain ranges of the Peninsula, and represent the Centrel Granitoid Province of SE Asia. These granite bodies comprise a series of large mesozonal batholiths and plutons of biotite granites of S-type ilmenite series, emplaced into Lower to Middle Paleozoic-grade metamorphic rocks in Peninsular Malaysia. The genesis of the Main Range granites has been sugested to be in an A-type subduction setting and indicate of syn- to post-collisional. There are the granites which are associated with tin mineralization throughout the Peninsular Malaysia and as far south as the Indonesian island of Billiton.
June 1, 2009
Konglomerat Gunung Ayam, Gua Musang
Konglomerat Gunung Ayam banyak kedapatan di sekitar kaki bukit Gunung Ayam, Gua Musang dan mungkin menjadi basal kepada strata batuan Permian-Triassik. Klastanya terdiri daripada kuartza, syal, chert, kuarzit, volkanoklastik dan granit. Gunung Ayam adalah terbentuk dari permatang kuatza dan bukannya dibentuk oleh batuan konglomerat seperti yang disangka sebelum ini. Permatangnya mempunyai dinding yang hampir menegak ia adalah mungkin sebahagian dari batuan Zon Sutur Bentong-Raub.
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