《Table 2 Results of zircon LA-ICP-MS U-Pb data for the syenite and granite in the Tengchong block》

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《"Early-Cretaceous Syenites and Granites in the Northeastern Tengchong Block, SW China: Petrogenesis and Tectonic Implications"》

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This study focuses on the syenite from Menglian batholiths and granite from the Gaoliogong belt of the northeastern part of Tengchong block（Fig.1b and c；Table 1）.The Menglian batholith are located in the eastern Tengchong Terrane and intruded into the Gaoligong Group metamorphic rocks as well as the PaleozoicMesozoic strata（Fig.1b）.In most cases，they show faulted contact with the wall-rock although the intrusive contact can be seen in some places as well.Cenozoic volcanic rocks unconformably overly these intrusions and/or are covered by Quaternary sediments（Luo et al.2012）.The intrusions show round or elongate shape，and occurparallel to the~NNW–SSW orientation with the Gaoligong shear zone and Nujiang-Longling-Ruili fault（NLRF）which are regarded to mark the southeastern extension of the Nujiang suture belt（Cong et al.，2011a）.The studied pluton was located on the northern of the Menglian batholith near the Qushijie town，which mainly consists of the syenites that as the intrusions in the Paleozoic-Mesozoic strata and Gaoligong Group metamorphic rocks with sharply and unconformably contact（Fig.1b）.The syenite are medium to coarse grain and some part porphyroid texture and massive structure（Fig.2a），mainly contained of plagioclase（most of them are albite，50–55%），alkaline feldspar（15–20 vol%），quartz（5–10 vol%），hornblend（possible arfvedsonite，5–10 vol%），biotite（5 vol%），and accessory mineral including titanite，magnetite，zircon，and apatite（Fig.2b）.