Some geochemical studies of the metaquartzites of the Jerai Formation, Kedah

Chow, K. T. (1980) Some geochemical studies of the metaquartzites of the Jerai Formation, Kedah. Bulletin of the Geological Society of Malaysia, 13. pp. 57-62. ISSN 2637-109X

Abstract

The following types of metaquartzites from the Jerai Formation (Cambrian) can be distinguished – white metaquartzite, micaceous metaquartzite and calcareous-micaceous metaquartzite. The compositions of the white and micaceous metaquartzites overlap but the white variety appear to be generally more aluminous but less alkali-rich compared to the micaceous variety. The metaquartzites contain high K₂O comparable to granitic rocks and indicating that the probable source rocks are acid igneous rocks. The Rb/Sr ratios of the metaquartzites also are comparable to the Main Range granites which give rise to the thought that the source may be similar crustal rocks.

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