2024-03-29T11:24:54Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00001441
2023-01-16T03:46:36Z
336:337:338:348
Preliminary report of CHIME dating on detrital monazite grains from the Namurian Poruba Beds and the Stephanian Kwaczala Arkose in the Upper Silesia Coal Basin, Poland
Kusiak, Monika
Suzuki, Kazuhiro
Paszkowski, Mariusz
open access
This paper reports on preliminary results of the CHIME (chemical Th-U-total Pb isochron method) dating of detrital monazites from sandstone samples of the Upper Silesia Coal Basin. A total of 1012 spots on 203 monazite grains were dated for the Poruba Beds of the Namurian Paralic Series (sample POR1/12), and a total of 1060 spots on 212 monazite grains for the Stephanian Kwaczala Arkose (sample KA1/12). The ages of detrital monazite grains in POR1/12 cluster around 300 Ma with subordinate concentrations around 330 Ma, 360 Ma, 420 Ma and 530 Ma. Most monazite grains in KA1/12 have ages that range from 310 Ma to 330 Ma, and the rest yield a c. 300 Ma age. Monazite grains older than 360 Ma are rare in KA1/12. Although c. 300 Ma monazite ages are inconsistent with the Namurian fauna age for the Poruba Beds, the predominance of 300-330 Ma detrital monazites suggests a very fast denudation of the crystalline source areas. A major source area may be the Variscan lithologies of the Bohemian Massif.
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。
Dept. of Earth and Planetary Sciences, Nagoya University
2001
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/joueps.48.15
http://hdl.handle.net/2237/2852
https://nagoya.repo.nii.ac.jp/records/1441
10.18999/joueps.48.15
0919875X
The Journal of earth and planetary sciences, Nagoya University
48
15
41
https://nagoya.repo.nii.ac.jp/record/1441/files/KJ00000037614.pdf
application/pdf
2.4 MB
2018-02-16