Bulletin of the Geological Society of Malaysia, Volume 54, November 2008, pp. 71 – 74

Geochemical contrast between Beroga (Kuala Kelawang pluton) and Semenyih (Kuala Lumpur pluton) granites in Kuala Kelawang area, Negeri Sembilan

Azman A. Ghani1*, Mohd Sofian Azirun², Rosli Ramli², Rosli Hashim², Nur Islami Rahman¹ & Zarith Aina Zainuddin¹

¹Department of Geology, Faculty of Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia

*E-mail address: azmangeo@um.edu.my

²Institute Science Biology, Faculty of Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia

Abstract— Geochemical data of both Semenyih and Beroga granites, in the central part of Main Range Granite, show that they are madeup of different magma pulses. The Beroga granite is more basic, containing 67.22 – 68.02% SiO₂, whereas the Semenyih granite consists of more evolved rock (SiO₂: 70.36 to 73.48%). Both are S-type granite which suggests that the source rocks were metasediments. Geochemically, they are part of the Main Range Granite. The Semenyih granite is charcterised by high Rb/Sr ratio, which suggests that the magma is highly evolved and contains less enclaves compared to the Beroga granite.

Keywords: Main Range Granite, geochemistry, granite, Western Belt

https://doi.org/10.7186/bgsm54200812