Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand
The Chiang Khong volcanic suite forms the northeastern part of the Tak-Chiang Khong volcanic belt in the Sukhothai terrane of northern Thailand. It consists mainly of subaerial andesitic to rhyolitic tuffaceous rocks. A rhyolitic tuff yielded a Middle Triassic U-Pb (zircon) age of 232.9 ± 0.4 Ma. Th...
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th-cmuir.6653943832-616262018-09-11T08:56:12Z Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand Sandra M. Barr Alan S. MacDonald Prayote Ounchanum Michael A. Hamilton Earth and Planetary Sciences The Chiang Khong volcanic suite forms the northeastern part of the Tak-Chiang Khong volcanic belt in the Sukhothai terrane of northern Thailand. It consists mainly of subaerial andesitic to rhyolitic tuffaceous rocks. A rhyolitic tuff yielded a Middle Triassic U-Pb (zircon) age of 232.9 ± 0.4 Ma. The suite displays calc-alkalic chemical trends and Nb, P, and Ti depletion characteristic of subduction-related magmatism. Based on petrological similarities, the suite is correlated with the c. 240 Ma Lampang volcanic rocks located farther to the SW in the Tak-Chiang Khong belt, and with volcanic rocks of similar age in the Lincang-Jinghong belt in Yunnan, in the western part of the Simao block. These correlations support the placement of the Palaeo-Tethyan suture to the west of the Sukhothai terrane. 2018-09-11T08:56:12Z 2018-09-11T08:56:12Z 2006-11-01 Journal 00167649 2-s2.0-33750704635 10.1144/0016-76492005-118 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33750704635&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/61626 |
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Earth and Planetary Sciences |
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Earth and Planetary Sciences Sandra M. Barr Alan S. MacDonald Prayote Ounchanum Michael A. Hamilton Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| description |
The Chiang Khong volcanic suite forms the northeastern part of the Tak-Chiang Khong volcanic belt in the Sukhothai terrane of northern Thailand. It consists mainly of subaerial andesitic to rhyolitic tuffaceous rocks. A rhyolitic tuff yielded a Middle Triassic U-Pb (zircon) age of 232.9 ± 0.4 Ma. The suite displays calc-alkalic chemical trends and Nb, P, and Ti depletion characteristic of subduction-related magmatism. Based on petrological similarities, the suite is correlated with the c. 240 Ma Lampang volcanic rocks located farther to the SW in the Tak-Chiang Khong belt, and with volcanic rocks of similar age in the Lincang-Jinghong belt in Yunnan, in the western part of the Simao block. These correlations support the placement of the Palaeo-Tethyan suture to the west of the Sukhothai terrane. |
| format |
Journal |
| author |
Sandra M. Barr Alan S. MacDonald Prayote Ounchanum Michael A. Hamilton |
| author_facet |
Sandra M. Barr Alan S. MacDonald Prayote Ounchanum Michael A. Hamilton |
| author_sort |
Sandra M. Barr |
| title |
Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| title_short |
Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| title_full |
Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| title_fullStr |
Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| title_full_unstemmed |
Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand |
| title_sort |
age, tectonic setting and regional implications of the chiang khong volcanic suite, northern thailand |
| publishDate |
2018 |
| url |
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33750704635&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/61626 |
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