Abstract
On the basis of the petrographic characteristics, rock assemblages, petrochemistry, REEs, trace elements and geotectonic settings, the authors described the characteristics of continental marginal arc-volcanic rocks in the Late Permian-Early Triassic (P2-T1) volcanic rocks distributed on the eastern side of the ocean-ridge/oceanic island basalts in the Chiang Mai belt. The volcanic rock assemblage is basaltic andesite-andesite-rhyolite. The volcanic series is dominated by the calc-alkaline series, with the tholeitic series coming next. The chemical composition of the volcanic rocks is characterized by high Al2O3; the REE distribution patterns are of the LREE-enrichment rightward incline type; the large cation elements are highly enriched, and the volcanic rocks are generally enriched in U and Th and depleted in Ti, Cr and P. The petrochemical plot falls within the field of island-arc volcanic rocks, in consistency with the projected points of continental marginal arc-volcanic rocks in the Lancangjiang belt. These continental marginal arc-volcanic rocks, together with ocean-ridge/oceanic island-type volcanic rocks in the Chiang Mai belt, constitute the ocean-ridge volcanic rock-arc magmatic rock belts distributed in pairs, indicative of eastward subduction of the oceanic crust in the Chiang Mai belt. This result is of great importance in exploring the evolution of the paleo-Tethys in the Chiang Mai belt.
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References
Bailey J.C. (1981) Geochemical criteria for refined tectonic discrimination of orogenic andesites [J]. Chem.Geol. 32, 139–154.
Barr S.M. and Macdonald A.S. (1991) Toward a Late Paleozoic-Early Mesozoic tectonic model for Thailand [J]. Journal of Thailand Geosciences. 1, 11–22.
Barr S.M., Macdonald A.S., Dunning G.R., Ounchanum P., and Yaowanoiyothin W. (2000) Petrochemistry, U-Pb (zircon) age, and palaeotectonic Setting of the Lampang volcanic belt, northern Thailand [J]. Journal of the Geological Society, London. 157, 553–563.
Caridroit M. (1993) Ameixed radiolarian fauna (Permian/Triassic) from clastics of the Maesariang arc, northwestem Thaind. In The Proceedings of the Interanational Symposium on Biostratigraphy of Mainland of Southeast Asia: Facies and Patecontology (ed. Thanasuthipitak T.) [M]. 2, 401–413.
Glassily W. (1974) Geochemistry and tectonics of the Grescent volcanic rocks, Olympic Peninsula, Washington [J]. Geol. Soc. Am. Bull. 85, 785–794.
Irvine T.N. and Baragar W.R.A. (1971) A guide to the chemical classification of the common volcanic rocks [J]. Canadian Journal of Earth Sciences. 8, 523–548.
Le Bas M.J., Le Maitre R.W., Streckheisen A. et al. (1986) A chemical classification of volcanic rocks based on the total alkali-silica diagram [J]. Journal of Petrology. 27, 745–750.
Metcalfe (2002) Permian tectonic framework and palaeogeography of SE Asia [J]. Journal of Asian Earth Sciences. 20, 551–556.
Miyashiro A. (1974) Volcanic rock series in island arcs and active continental margins [J]. Am. J. Sci. 274, 321–355.
Mo Xuanxue, Lu Fengxiang, Shen Shangyue et al. (1993) Volcanism and metallogenesis of Tethys in the Sanjiang (Tri-river) region [M]. pp.1–267. Geological Publishing House, Beijing (in Chinese).
Pan Guitang, Chen Zhiliang, Li Xingzhen et al. (1997) Geotectonic Formation and Evolution of the East Tethys [M]. Geological Publishing House, Beijing (in Chinese).
Pearce J.A. (1982) Trace element characteristics of lavas from destructive plate boundaries [M]. In Andesites. (ed. Thorpe R.S.) [M]. pp.525–548. Wiley, Chichester.
Shen Shangyue, Feng Qinglai, and Wei Qirong (2006) A study on the geochemical characteristics of Upper Permian continental marginal arc volcanic rocks in the northern segment of South Lancangjiang Belt [J]. Chinese Journal of Geochemistry. 25, 216–222.
Shen Shangyue, Feng Qinglai, Zhang Zhibin, and Chongpan Chonglakmani (2009) Geochemical characteristics of the oceanic island-type volcanic rocks in the Chiang Mai belt, northern Thailand [J]. Journal of the Geological Society, London. 28, 258–263.
Shen Shangyue, Feng Qinglai, and Wei Qirong (2007) New proof of pro-Tethys arc volcanic rocks in the northern segment of South Lancangjiang [J]. Chinese Journal Geochemistry. 26, 91–97.
Wei Qirong (1999) Isotopic Tracing of Volcanic Rocks and Element Geochemical Division and Ore Search in the Middle Segment of the Sanjiang Belt [D]. pp.1–67. Ph.D. Desertation of Chinese University of Geology (Wuhan) (in Chinese).
Wu Haoruo (1994) Stratigraphical and geological problems of southern Changning-Menglian belt, western Yunnan [J]. Journal of Stratigraphy. 18, 221–227 (in Chinese with English abstract).
Zhao Chonghe (1989) The ATK diagram of basic-intermediate volcanic rocks and tectonic environment [J]. Geological Science and Technology Information. 4, 1–5.
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Shen, S., Feng, Q., Yang, W. et al. Study on the geochemical characteristics of arc-volcanic rocks in the Chiang Rai-Lampang belt of northern Thailand. Chin. J. Geochem. 29, 255–260 (2010). https://doi.org/10.1007/s11631-010-0454-6
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DOI: https://doi.org/10.1007/s11631-010-0454-6