Late Anisian radiolarian assemblages from the Yarlung-Tsangpo Suture Zone in the Jinlu area, Zedong, southern Tibet: Implications for the evolution of Neotethys

被引：45

作者：

Chen, Dishu ^{[1
,2
]}

Luo, Hui ^{[1
]}

Wang, Xueheng ^{[3
]}

Xu, Bo ^{[1
]}

Matsuoka, Atsushi ^{[4
]}

机构：

[1] Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Key Lab Econ Stratig & Palaeogeog, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Guangxi Inst Geol Survey, 21 North Yuanhu Rd, Nanning 530023, Peoples R China

[4] Niigata Univ, Dept Geol, Niigata 9502181, Japan

来源：

ISLAND ARC | 2019年 / 28卷 / 04期

基金：

日本学术振兴会; 中国国家自然科学基金;

关键词：

biostratigraphy; Neotethys; radiolaria; Tibet; Triassic; Yarlung-Tsangpo Suture Zone; TRIASSIC RADIOLARIANS; XIALU-CHERT; MELANGE; TERRANE; RECORD; AGE; BIOSTRATIGRAPHY; OPHIOLITES; THRUST; SYSTEM;

D O I：

10.1111/iar.12302

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Abundant Triassic radiolarian fossils were obtained from varicolored bedded cherts exposed in the Buruocang section near Jinlu village, Zedong, southern Tibet. The radiolarian-bearing rocks represent fragmented remnants of the Neotethys oceanic sediments belonging to the melange complex of the east part of the Yarlung-Tsangpo Suture Zone. Two new middle Late Anisian radiolarian assemblages recognized from this section named Oertlispongus inaequispinosus and Triassocampe deweveri, respectively, are compared with those known from Europe, Far East Russia, Japan, and Turkey. These Anisian radiolarian fossils are the first reported in southern Tibet and the oldest radiolarian record within the Yarlung-Tsangpo Suture Zone. They improve time constraints for the evolution of Neotethys in southern Tibet.

引用

页数：10

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