U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand - A new report of Early Paleozoic granite

T. Kawakami, Nobuhiko Nakano, F. Higashino, T. Hokada, Yasuhito Osanai, M. Yuhara, P. Charusiri, H. Kamikubo, K. Yonemura, T. Hirata

研究成果: ジャーナルへの寄稿記事

26 引用 (Scopus)

抄録

In order to understand the age and tectonic framework of Eastern to Peninsular Thailand from the viewpoint of basement (metamorphic and plutonic) geology, the LA-ICP-MS U-Pb zircon dating and the chemical Th-U-total Pb isochron method (CHIME) monazite dating were performed in the Khao Chao, Hub-Kapong to Pran Buri, and Khanom areas in Eastern to Peninsular Thailand. The LA-ICP-MS U-Pb zircon dating of the garnet-hornblende gneiss from the Khao Chao area gave 229. ±. 3. Ma representing the crystallization age of the gabbro, and that of the garnet-biotite gneisses gave 193. ±. 4. Ma representing the timing of an upper amphibolite facies metamorphism. The CHIME monazite dating of pelitic gneiss from the Khao Chao gneiss gave scattered result of 68. ±. 22. Ma, due to low PbO content and rejuvenation of older monazite grains during another metamorphism in the Late Cretaceous to Tertiary time.The U-Pb ages of zircon from the Hua Hin gneissic granite in the Hub-Kapong to Pran Buri area scatter from 250. Ma to 170. Ma on the concordia. Granite crystallization was at 219. ±. 2. Ma, followed by the sillimanite-grade regional metamorphism at 185. ±. 2. Ma. Monazite in the pelitic gneiss from this area also preserves Early to Middle Jurassic metamorphism and rejuvenation by later contact metamorphism by non-foliated granite or by another fluid infiltration event in the Late Cretaceous to Tertiary time.The Khao Dat Fa granite from the Khanom area of Peninsular Thailand gave a U-Pb zircon age of 477. ±. 7. Ma. This is the second oldest granite pluton ever reported from Thailand, and is a clear evidence for the Sibumasu block having a crystalline basement that was formed during the Pan-African Orogeny. The Khao Pret granite gives U-Pb zircon concordia age of 67.5. ±. 1.3. Ma, which represents the timing of zircon crystallization from the granitic melt and accompanied sillimanite-grade contact metamorphism against surrounding metapelites and gneisses.Metamorphic rocks in the Doi Inthanon area also share the similar plutono-metamorphic history with the Khanom and the Hub-Kapong to Pran Buri areas. This suggests that these three areas belong to the Sibumasu block, and the Sibumasu block records similar plutono-metamorphic history from Northern to Peninsular Thailand.Relative abundance of oceanic components in the Khao Chao gneiss, their Late Triassic magmatic ages, and the Early Jurassic metamorphic ages prefer the interpretation that the Khao Chao gneiss belongs to the Sukhothai Arc.

元の言語英語
ページ(範囲)64-79
ページ数16
ジャーナルLITHOS
200-201
発行部数1
DOI
出版物ステータス出版済み - 7 1 2014

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Metamorphic rocks
monazite
metamorphic rock
zircon
gneiss
granite
Paleozoic
Crystallization
Garnets
contact metamorphism
crystallization
metamorphism
sillimanite
garnet
Jurassic
Cretaceous
Pan African orogeny
Tectonics
Geology
Infiltration

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

これを引用

U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand - A new report of Early Paleozoic granite. / Kawakami, T.; Nakano, Nobuhiko; Higashino, F.; Hokada, T.; Osanai, Yasuhito; Yuhara, M.; Charusiri, P.; Kamikubo, H.; Yonemura, K.; Hirata, T.

:: LITHOS, 巻 200-201, 番号 1, 01.07.2014, p. 64-79.

研究成果: ジャーナルへの寄稿記事

Kawakami, T. ; Nakano, Nobuhiko ; Higashino, F. ; Hokada, T. ; Osanai, Yasuhito ; Yuhara, M. ; Charusiri, P. ; Kamikubo, H. ; Yonemura, K. ; Hirata, T. / U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand - A new report of Early Paleozoic granite. :: LITHOS. 2014 ; 巻 200-201, 番号 1. pp. 64-79.
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title = "U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand - A new report of Early Paleozoic granite",
abstract = "In order to understand the age and tectonic framework of Eastern to Peninsular Thailand from the viewpoint of basement (metamorphic and plutonic) geology, the LA-ICP-MS U-Pb zircon dating and the chemical Th-U-total Pb isochron method (CHIME) monazite dating were performed in the Khao Chao, Hub-Kapong to Pran Buri, and Khanom areas in Eastern to Peninsular Thailand. The LA-ICP-MS U-Pb zircon dating of the garnet-hornblende gneiss from the Khao Chao area gave 229. ±. 3. Ma representing the crystallization age of the gabbro, and that of the garnet-biotite gneisses gave 193. ±. 4. Ma representing the timing of an upper amphibolite facies metamorphism. The CHIME monazite dating of pelitic gneiss from the Khao Chao gneiss gave scattered result of 68. ±. 22. Ma, due to low PbO content and rejuvenation of older monazite grains during another metamorphism in the Late Cretaceous to Tertiary time.The U-Pb ages of zircon from the Hua Hin gneissic granite in the Hub-Kapong to Pran Buri area scatter from 250. Ma to 170. Ma on the concordia. Granite crystallization was at 219. ±. 2. Ma, followed by the sillimanite-grade regional metamorphism at 185. ±. 2. Ma. Monazite in the pelitic gneiss from this area also preserves Early to Middle Jurassic metamorphism and rejuvenation by later contact metamorphism by non-foliated granite or by another fluid infiltration event in the Late Cretaceous to Tertiary time.The Khao Dat Fa granite from the Khanom area of Peninsular Thailand gave a U-Pb zircon age of 477. ±. 7. Ma. This is the second oldest granite pluton ever reported from Thailand, and is a clear evidence for the Sibumasu block having a crystalline basement that was formed during the Pan-African Orogeny. The Khao Pret granite gives U-Pb zircon concordia age of 67.5. ±. 1.3. Ma, which represents the timing of zircon crystallization from the granitic melt and accompanied sillimanite-grade contact metamorphism against surrounding metapelites and gneisses.Metamorphic rocks in the Doi Inthanon area also share the similar plutono-metamorphic history with the Khanom and the Hub-Kapong to Pran Buri areas. This suggests that these three areas belong to the Sibumasu block, and the Sibumasu block records similar plutono-metamorphic history from Northern to Peninsular Thailand.Relative abundance of oceanic components in the Khao Chao gneiss, their Late Triassic magmatic ages, and the Early Jurassic metamorphic ages prefer the interpretation that the Khao Chao gneiss belongs to the Sukhothai Arc.",
author = "T. Kawakami and Nobuhiko Nakano and F. Higashino and T. Hokada and Yasuhito Osanai and M. Yuhara and P. Charusiri and H. Kamikubo and K. Yonemura and T. Hirata",
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TY - JOUR

T1 - U-Pb zircon and CHIME monazite dating of granitoids and high-grade metamorphic rocks from the Eastern and Peninsular Thailand - A new report of Early Paleozoic granite

AU - Kawakami, T.

AU - Nakano, Nobuhiko

AU - Higashino, F.

AU - Hokada, T.

AU - Osanai, Yasuhito

AU - Yuhara, M.

AU - Charusiri, P.

AU - Kamikubo, H.

AU - Yonemura, K.

AU - Hirata, T.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - In order to understand the age and tectonic framework of Eastern to Peninsular Thailand from the viewpoint of basement (metamorphic and plutonic) geology, the LA-ICP-MS U-Pb zircon dating and the chemical Th-U-total Pb isochron method (CHIME) monazite dating were performed in the Khao Chao, Hub-Kapong to Pran Buri, and Khanom areas in Eastern to Peninsular Thailand. The LA-ICP-MS U-Pb zircon dating of the garnet-hornblende gneiss from the Khao Chao area gave 229. ±. 3. Ma representing the crystallization age of the gabbro, and that of the garnet-biotite gneisses gave 193. ±. 4. Ma representing the timing of an upper amphibolite facies metamorphism. The CHIME monazite dating of pelitic gneiss from the Khao Chao gneiss gave scattered result of 68. ±. 22. Ma, due to low PbO content and rejuvenation of older monazite grains during another metamorphism in the Late Cretaceous to Tertiary time.The U-Pb ages of zircon from the Hua Hin gneissic granite in the Hub-Kapong to Pran Buri area scatter from 250. Ma to 170. Ma on the concordia. Granite crystallization was at 219. ±. 2. Ma, followed by the sillimanite-grade regional metamorphism at 185. ±. 2. Ma. Monazite in the pelitic gneiss from this area also preserves Early to Middle Jurassic metamorphism and rejuvenation by later contact metamorphism by non-foliated granite or by another fluid infiltration event in the Late Cretaceous to Tertiary time.The Khao Dat Fa granite from the Khanom area of Peninsular Thailand gave a U-Pb zircon age of 477. ±. 7. Ma. This is the second oldest granite pluton ever reported from Thailand, and is a clear evidence for the Sibumasu block having a crystalline basement that was formed during the Pan-African Orogeny. The Khao Pret granite gives U-Pb zircon concordia age of 67.5. ±. 1.3. Ma, which represents the timing of zircon crystallization from the granitic melt and accompanied sillimanite-grade contact metamorphism against surrounding metapelites and gneisses.Metamorphic rocks in the Doi Inthanon area also share the similar plutono-metamorphic history with the Khanom and the Hub-Kapong to Pran Buri areas. This suggests that these three areas belong to the Sibumasu block, and the Sibumasu block records similar plutono-metamorphic history from Northern to Peninsular Thailand.Relative abundance of oceanic components in the Khao Chao gneiss, their Late Triassic magmatic ages, and the Early Jurassic metamorphic ages prefer the interpretation that the Khao Chao gneiss belongs to the Sukhothai Arc.

AB - In order to understand the age and tectonic framework of Eastern to Peninsular Thailand from the viewpoint of basement (metamorphic and plutonic) geology, the LA-ICP-MS U-Pb zircon dating and the chemical Th-U-total Pb isochron method (CHIME) monazite dating were performed in the Khao Chao, Hub-Kapong to Pran Buri, and Khanom areas in Eastern to Peninsular Thailand. The LA-ICP-MS U-Pb zircon dating of the garnet-hornblende gneiss from the Khao Chao area gave 229. ±. 3. Ma representing the crystallization age of the gabbro, and that of the garnet-biotite gneisses gave 193. ±. 4. Ma representing the timing of an upper amphibolite facies metamorphism. The CHIME monazite dating of pelitic gneiss from the Khao Chao gneiss gave scattered result of 68. ±. 22. Ma, due to low PbO content and rejuvenation of older monazite grains during another metamorphism in the Late Cretaceous to Tertiary time.The U-Pb ages of zircon from the Hua Hin gneissic granite in the Hub-Kapong to Pran Buri area scatter from 250. Ma to 170. Ma on the concordia. Granite crystallization was at 219. ±. 2. Ma, followed by the sillimanite-grade regional metamorphism at 185. ±. 2. Ma. Monazite in the pelitic gneiss from this area also preserves Early to Middle Jurassic metamorphism and rejuvenation by later contact metamorphism by non-foliated granite or by another fluid infiltration event in the Late Cretaceous to Tertiary time.The Khao Dat Fa granite from the Khanom area of Peninsular Thailand gave a U-Pb zircon age of 477. ±. 7. Ma. This is the second oldest granite pluton ever reported from Thailand, and is a clear evidence for the Sibumasu block having a crystalline basement that was formed during the Pan-African Orogeny. The Khao Pret granite gives U-Pb zircon concordia age of 67.5. ±. 1.3. Ma, which represents the timing of zircon crystallization from the granitic melt and accompanied sillimanite-grade contact metamorphism against surrounding metapelites and gneisses.Metamorphic rocks in the Doi Inthanon area also share the similar plutono-metamorphic history with the Khanom and the Hub-Kapong to Pran Buri areas. This suggests that these three areas belong to the Sibumasu block, and the Sibumasu block records similar plutono-metamorphic history from Northern to Peninsular Thailand.Relative abundance of oceanic components in the Khao Chao gneiss, their Late Triassic magmatic ages, and the Early Jurassic metamorphic ages prefer the interpretation that the Khao Chao gneiss belongs to the Sukhothai Arc.

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