@article{oai:nagoya.repo.nii.ac.jp:00001436,
 author = {Tetsopgang, Samuel and Suzuki, Kazuhiro and Adachi, Mamoru},
 journal = {The Journal of earth and planetary sciences, Nagoya University},
 month = {Dec},
 note = {The chemical Th-U-total Pb isochron method (CHIME) has been adopted for dating the syntectonic foliated and post-tectonic unfoliated granites in northwestern Cameroon. The CHIME ages are 532±35 Ma for allanite and 523±45 Ma for zircon from Sample I_<10> of foliated biotite granite, 530±9 Ma for monazite from Sample N_9 of foliated two-mica granite, and 510±25 Ma for monazite from Sample I_4 of unfoliated two-mica granite. Several monazite grains from Samples N_9 and I_4 yield 436±13 and 420±16 Ma CHIME ages, respectively. The 532-510 Ma ages are interpreted as the time of granite emplacement and the 436-420 Ma ages as the time of hydrothermal alteration. The CHIME ages coupled with the concordant relation between the foliated granites and migmatitic gneiss suggest a ca. 530 Ma metamorphic-plutonic episode in northwestern Cameroon rather than a thermal overprint by granite intrusion., 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 = {57--70},
 title = {Preliminary CHIME dating of granites from the Nkambe area, northwestern Cameroon, Africa},
 volume = {46},
 year = {1999}
}