2024-03-29T09:15:54Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00006881
2022-12-15T03:40:08Z
176:177:178:199
453:456
A Middle Triassic radiolarian assemblage from Quxia, Lhaze County, southern Tibet
A Middle Triassic radiolarian assemblage from Quxia, Lhaze County, southern Tibet
Yang, Qun
54544
Matsuoka, Atsushi
54545
Wang, Yu-jing
54546
Kobayashi, Kenta
54547
Nagahashi, Tohru
54548
Zeng, Qing-gao
54549
Ladinian
Middle Triassic
Quxia
Radiolaria
southern Tibet
Zhongbei area
A radiolarian assemblage was extracted from a siliceous mudstone sample of Triassic shallow marine sequences exposed south of Quxia in the Zhongbei area, Lhaze County, southern Tibet. The radiolarian assemblage discovered in this study is characterized by having abundant spumellarians and few nassellarians. It includes Cryptostephanidium cornigeum Dumitrica, Hindeosphaera spinulosa (Nakaseko and Nishimura), Muelleritortis cochleata (Nakaseko and Nishimura), Pseudostylosphaera goestlingensis (Kozur and Mostler), Pseudostylosphaera hellenica (De Wever), Pseudostylosphaera japonica (Nakaseko and Nishimura), Pseudostylosphaera nazarovi (Kozur and Mostler), Triassocampe sp. cf. T. deweveri (Nakaseko and Nishimura) and Tritortis (?) sp. The faunal association is comparable to that of the TR 4A zone in the Mino Terrane, central Japan, proposed by Sugiyama (1997). The age of the assemblage is assignable to Ladinian (Middle Triassic). Comparison with radiolarian biostratigraphic works in other areas is also concordant with this age assignment.
departmental bulletin paper
新潟大学理学部
2000-03
application/pdf
Science reports of Niigata University. (Geology)
15
59
65
Science reports of Niigata University. (Geology)
AA11436808
13491237
https://niigata-u.repo.nii.ac.jp/record/6881/files/15_59-65.pdf
eng