Abstract
We report an in-situ U-Pb age of titanite in the Chuncheon amphibolite, central Gyeonggi massif, using a high-resolution secondary ion mass spectrometer (HR-SIMS). Titanite occurs as common accessory phase in garnet amphibolites, produced by regional metamorphism. Titanite grains separated from two amphibolite samples yield the weighted mean 238U-206Pb ages of 224 ± 14 (2σ) Ma and 239 ± 94 (2σ) Ma, respectively, which are interpreted to suggest a high-grade metamorphism at ca. 220 Ma. This result together with the available ages reported by previous workers suggests that both the Gyeonggi massif and the Imjingang belt experienced the regional Triassic metamorphism, possibly in association with continental collision between the North and South China blocks.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
