Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/61626
Title: Age, tectonic setting and regional implications of the Chiang Khong volcanic suite, northern Thailand
Authors: Sandra M. Barr
Alan S. MacDonald
Prayote Ounchanum
Michael A. Hamilton
Keywords: Earth and Planetary Sciences
Issue Date: 1-Nov-2006
Abstract: 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.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33750704635&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61626
ISSN: 00167649
Appears in Collections:CMUL: Journal Articles

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