【摘 要】
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ObjectivernThe Early Paleozoic tectonic events such as oceanic subduction and collision-orogeny in the North Altyn have been extensively studied. The Lapeiquan
【机 构】
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State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Techno
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ObjectivernThe Early Paleozoic tectonic events such as oceanic subduction and collision-orogeny in the North Altyn have been extensively studied. The Lapeiquan Group, distributed in the Hongliugou ophiolite mélange belt (Fig. 1), was interpreted to form along with the Ordovician Caledonian tectonic events. Based on few evidence of macrofossils, the formation age of the Lapeiquan Group was the Late Ordovician, which remains controversial. This work reports initially the detrital zircon LA-ICP-MS U-Pb ages of the sandstone sample from this group, the youngest U-Pb ages enable us to redefine the formation age of the Lapeiquan Group, further provide new basic information for studies on Early Paleozoic tectonic evolution in the North Altyn.
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