Geochemical study of volcanic and associated granitic rocks from Endau Rompin, Johor, Peninsular Malaysia

Journal of Earth system science

Rosli Ramli2¹  Meor Hakif Amir Hassan1²  Azman A Ghani1²  Ismail Yusoff1² 

[1] Institute of Biological Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.$$;Department of Geology, University of Malaya, 50603 Kuala Lumpur, Malaysia.$$

关键词: Endau Rompin;    Peninsular Malaysia;    rare earth elements;    granite;    volcanic arc.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

Geochemical studies and modelling show that both volcanic and granitic magmas from the western part of the Johor National Park, Endau Rompin are different and probably have different sources. The geochemical plot suggests that both dacite/rhyolite and andesite probably have a common origin as in many of the geochemical plots, these two groups form a similar trend. Volcanic rocks have a transitional geochemical character between tholeiite and calc alkaline on a Y versus Zr plot. (La/Yb)N versus La and TiO2 versus Zr modelling show that the crystallization of both granitic and volcanic magmas are controlled by a different set of minerals. The rare earth elements (REE) patterns of some of the granite and volcanic samples have pronounced negative Eu anomaly indicating plagioclase fractionation. The difference between both profiles is that the granite samples show a concave shape profile which is consistent with liquids produced by partial melting of quartz feldspathic rocks containing amphibole among the residual phase. Both magmas were generated at a different time during the subduction of Sibumasu beneath the Indochina blocks.

【 授权许可】

Unknown