2024-03-29T15:23:16Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00001424
2023-01-16T03:46:33Z
336:337:338:344
CHIME ages of zircons in granitic gneiss and granite from Samilpo, southeastern Democratic People's Republic of Korea
KATO, Takenori
SUZUKI, Kazuhiro
MORISHITA, Taisei
YONEZAWA, Chinatsu
open access
The CHIME (chemical Th-U-total Pb isochron method) dating was carried out for zircons from pyrope-rich (Prp_<28>-Prp_<32>) garnet-bearing granitic gneiss and topaz-bearing biotite granite from the Samilpo region in the southeastern part of Democratic People's Republic of Korea. Zircons from the garnet-bearing granitic gneiss show a distinct core-rim structure ; the cores yield an early Proterozoic age of 2133±56 Ma, and the rims yield a poorly defined age of ca. 1500 Ma. The core and rim ages agree well with those for protolith formation and high-grade metamorphism, respectively, of the basement gneiss complex in the Gyeonggi Massif. Zircons from the topaz-bearing granite show a middle Jurassic age of 172±4 Ma, suggesting the granite to be assigned to the Jurassic Daebo Granite.
Dept. of Earth and Planetary Sciences, Nagoya University
1997-12
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/joueps.44.61
http://hdl.handle.net/2237/2835
https://nagoya.repo.nii.ac.jp/records/1424
10.18999/joueps.44.61
0919875X
The Journal of earth and planetary sciences, Nagoya University
44
61
69
https://nagoya.repo.nii.ac.jp/record/1424/files/KJ00002415218.pdf
application/pdf
569.8 kB
2018-02-16