Rare-earth elements modelling of the Langkawi granites

Based on the REE patterns the Langkawi granites can be divided into two groups i.e. the Gunung Raya-Dayang Bunting granite and Kuah-Pulau Tuba granite. The Gunung Raya-Dayang Bunting granite has weak negative Eu anomalies whereas the Kuah-Pulau Tuba granite has moderately strong negative Eu anomalie...

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Main Authors:	Wan Fuad Wan Hassan, Azman A. Ghani, Syafrina Ismail
Format:	Article
Published:	Universiti Kebangsaan Malaysia 2001
Online Access:	http://journalarticle.ukm.my/3800/ http://journalarticle.ukm.my/3800/

id	ukm-3800
recordtype	eprints
spelling	ukm-38002012-05-04T03:44:56Z http://journalarticle.ukm.my/3800/ Rare-earth elements modelling of the Langkawi granites Wan Fuad Wan Hassan, Azman A. Ghani , Syafrina Ismail , Based on the REE patterns the Langkawi granites can be divided into two groups i.e. the Gunung Raya-Dayang Bunting granite and Kuah-Pulau Tuba granite. The Gunung Raya-Dayang Bunting granite has weak negative Eu anomalies whereas the Kuah-Pulau Tuba granite has moderately strong negative Eu anomalies. Rb/Sr ratios also show similar differences with Rb/Sr ratios in Kuah-Pulau Tuba granites being much higher than those of the Gunung Raya-Dayang Bunting granite. Examination of the REE patterns shows that they have the usual 'bird-wing' shape with weak to moderately strong negative Eu anomalies. This pattern is similar to the West coast S-type granites and is different from the I-type granites of the East coast. A possible source material for the Langkawi granite is the Cambrian sediments of the Machinchang Formation. Modelling of the REE pattern has been carried out in two stages namely batch melting and fractional crystallisation. Results show that the Gunung Raya-Dayang Bunting magma requires a slightly higher degree of partial melting fraction (0.15-0.25%) compared to the Kuah-Pulau Tuba magma (0.25-0.3%). On the other hand the Gunung Raya/Dayang Bunting magma has undergone a higher degree of fractionation (16%) compared to the Kuah-Pulau Tuba magma (9%). Universiti Kebangsaan Malaysia 2001 Article PeerReviewed Wan Fuad Wan Hassan, and Azman A. Ghani , and Syafrina Ismail , (2001) Rare-earth elements modelling of the Langkawi granites. Sains Malaysiana, 30 . pp. 13-26. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol30_2001/vol30_01page13-26.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
description	Based on the REE patterns the Langkawi granites can be divided into two groups i.e. the Gunung Raya-Dayang Bunting granite and Kuah-Pulau Tuba granite. The Gunung Raya-Dayang Bunting granite has weak negative Eu anomalies whereas the Kuah-Pulau Tuba granite has moderately strong negative Eu anomalies. Rb/Sr ratios also show similar differences with Rb/Sr ratios in Kuah-Pulau Tuba granites being much higher than those of the Gunung Raya-Dayang Bunting granite. Examination of the REE patterns shows that they have the usual 'bird-wing' shape with weak to moderately strong negative Eu anomalies. This pattern is similar to the West coast S-type granites and is different from the I-type granites of the East coast. A possible source material for the Langkawi granite is the Cambrian sediments of the Machinchang Formation. Modelling of the REE pattern has been carried out in two stages namely batch melting and fractional crystallisation. Results show that the Gunung Raya-Dayang Bunting magma requires a slightly higher degree of partial melting fraction (0.15-0.25%) compared to the Kuah-Pulau Tuba magma (0.25-0.3%). On the other hand the Gunung Raya/Dayang Bunting magma has undergone a higher degree of fractionation (16%) compared to the Kuah-Pulau Tuba magma (9%).
format	Article
author	Wan Fuad Wan Hassan, Azman A. Ghani , Syafrina Ismail ,
spellingShingle	Wan Fuad Wan Hassan, Azman A. Ghani , Syafrina Ismail , Rare-earth elements modelling of the Langkawi granites
author_facet	Wan Fuad Wan Hassan, Azman A. Ghani , Syafrina Ismail ,
author_sort	Wan Fuad Wan Hassan,
title	Rare-earth elements modelling of the Langkawi granites
title_short	Rare-earth elements modelling of the Langkawi granites
title_full	Rare-earth elements modelling of the Langkawi granites
title_fullStr	Rare-earth elements modelling of the Langkawi granites
title_full_unstemmed	Rare-earth elements modelling of the Langkawi granites
title_sort	rare-earth elements modelling of the langkawi granites
publisher	Universiti Kebangsaan Malaysia
publishDate	2001
url	http://journalarticle.ukm.my/3800/ http://journalarticle.ukm.my/3800/
first_indexed	2023-09-18T19:39:49Z
last_indexed	2023-09-18T19:39:49Z
_version_	1777405514716545024

Rare-earth elements modelling of the Langkawi granites

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