SHRIMP U–Pb zircon ages of the Hida metamorphic and plutonic rocks,Japan: Implications for late Paleozoic to Mesozoic tectonics around the Korean Peninsula |
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| Authors: | Yutaka Takahashi Deung‐Lyong Cho Jianren Mao Xilin Zhao Keewook Yi |
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| Affiliation: | 1. Geological Survey of Japan, AIST, 1‐1‐1 Higashi, Tsukuba 305‐8567, Japan;2. Geology Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak‐ro, Yuseong‐gu, Daejeon 305‐350, Korea;3. Nanjing Institute of Geology and Mineral Resources, China Geological Survey, 534 East Zhongshan Road, Nanjing, China;4. Division of Environmental and Material Sciences, Korea Basic Science Institute, YeonGu DanJi‐ro 162, Ochang 363‐883, Korea |
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| Abstract: | A new U–Pb zircon geochronological study for the Hida metamorphic and plutonic rocks from the Tateyama area in the Hida Mountains of north central Japan is presented. The U–Pb ages of metamorphic zircon grains with inherited/detrital cores in paragneisses suggest that a metamorphic event took place at around 235–250 Ma; the cores yield ages around 275 Ma, 300 Ma, 330 Ma, 1 850 Ma, and 2 650 Ma. New age data, together with geochronological and geological context of the Hida Belt, indicate that a sedimentary protolith of the paragneisses is younger than 275 Ma and was crystallized at around 235–250 Ma. Detrital ages support a model that the Hida Belt was located in the eastern margin of the North China Craton, which provided zircon grains from Paleoproterozoic to Paleozoic rocks and also from Archean and rare Neoproterozoic rocks. Triassic regional metamorphism possibly reflects collision between the North and South China Cratons. |
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| Keywords: | Hida Belt Hida metamorphic rocks Hida plutonic rocks Ogcheon Belt SHRIMP U– Pb dating zircon |
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