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Origin and tectonic implications of the ~ 200 Ma, collision-related Jerai pluton of the Western Granite Belt, Peninsular Malaysia
Citation
Jamil, A and Ghani, AA and Zaw, K and Osman, S and Quek, LX, Origin and tectonic implications of the ~ 200 Ma, collision-related Jerai pluton of the Western Granite Belt, Peninsular Malaysia, Journal of Asian Earth Sciences, 127 pp. 32-46. ISSN 1367-9120 (2016) [Refereed Article]
Copyright Statement
Copyright 2016 Elsevier Ltd.
DOI: doi:10.1016/j.jseaes.2016.06.004
Abstract
Triassic granitoids (∼200–225 Ma) are widespread in the Western Belt of Peninsular Malaysia. The Main Range granite is the biggest batholith in the Western Belt composed of peraluminous to metaluminous granite and granodiorite and displays typical ilmenite-series characteristics. Jerai granitic pluton occurs at the northwestern part of the Main Range granite batholith. The Jerai granite can be divided into three facies: (i) biotite-muscovite granite; (ii) tourmaline granite; and (iii) pegmatite and aplopegmatite. Biotite-muscovite granite accounts for 90% of the Jerai pluton, and the rest is tourmaline granite. Geochemical data reveal that pegmatite and tourmaline granite are more differentiated than biotite-muscovite granite. Both pegmatite and tourmaline granite have a higher SiO2 content (70.95–83.94% versus 69.45–73.35%) and a more pronounced peraluminous character. The U–Pb zircon geochronology of the Jerai granite gave an age ranging from 204 ± 4.3 Ma, 205 ± 4 Ma and 205 ± 2 Ma for pegmatite biotite-muscovite granite and tourmaline granite, respectively. The biotite-muscovite Jerai granites are similar to S-type Main Range granite, but the tourmaline granite has a signature of late-stage hydrothermal fluid interaction such as tourmaline quartz pods, the accumulation of large pegmatitic K-feldspar, pronounced peraluminous character, higher SiO2 content. Age evidence of these two granitic facies suggest that they are from the same magma.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Western Belt granite; Peninsular Malaysia; Pegmatite; U-Pb dating; S-type granite |
| Research Division: | Earth Sciences |
| Research Group: | Geology |
| Research Field: | Structural geology and tectonics |
| Objective Division: | Mineral Resources (Excl. Energy Resources) |
| Objective Group: | Other mineral resources (excl. energy resources) |
| Objective Field: | Other mineral resources (excl. energy resources) not elsewhere classified |
| UTAS Author: | Zaw, K (Professor Khin Zaw) |
| ID Code: | 115239 |
| Year Published: | 2016 |
| Web of Science® Times Cited: | 9 |
| Deposited By: | CODES ARC |
| Deposited On: | 2017-03-10 |
| Last Modified: | 2017-11-02 |
| Downloads: | 0 |
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