@article{oai:nagoya.repo.nii.ac.jp:00011012, author = {SUZUKI, Kazuhiro and KAJIZUKA, Izumi and WANG, Dezi and SUWA, Kanenori}, journal = {The Journal of Earth and Planetary Sciences, Nagoya University}, month = {}, note = {The ages of granite samples from Wugongshan and Huangshan, southeastern China were reexamined with the CHIME method coupled with screening of possibly concordant monazite analyses by the chemical criterion that 0.95<(Ca+Si)/(Th+U+Pb+S)<1.05. The age mapping technique reveals that monazite grains in sample Wugongshan-2, K-feldspar porphyritic muscovite-biotite granite, are chronologically zoned with the dominant central domain. The CHIME ages are 159±12 Ma for the central domain and 129±14 Ma for the marginal domain. Sample Wugongshan-3, coarse-grained peraluminous muscovite-biotite granite, gives a 164±19 Ma monazite age. The CHIME monazite ages for samples Huangshan-9 and -10, within-plate type muscovite-bearing biotite granites, are 130±19 and 138±6 Ma, respectively. Previous CHIME monazite ages, 173±10 Ma for Wugongshan samples and 162±10 Ma for Huangshan samples (Suzuki et al., 2000), appear to have resulted from mixing of concordant and discordant datasets and/or datasets for different age domains. The revised CHIME monazite ages provide chronological constraint for the tectonic evolution of southeastern China including the change from a subduction-related compressive environment to an extensional environment., 国立情報学研究所で電子化したコンテンツを使用している。}, pages = {1--12}, title = {Reexamination of CHIME monazite ages for granite samples from Wugongshan and Huangshan, southeastern China}, volume = {54}, year = {2007} }