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A Middle Permian assemblage of smaller foraminifera (Shanita-Hemigordiopsis assemblage) from the central Lhasa Block and its paleobiogeographic implications
Ju, Qi1,2,3; Zhang, Yi-chun(张以春)1,2; Qiao, Feng(乔峰)1,2,3; Xu, Hai-peng4
2021-06-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume572Pages:15
Abstract

The paleogeographic evolution of the Lhasa Block in northern Tibet during the Permian has been a contentious issue during the past decades. Several pioneering studies have highlighted the significance of faunas and their paleobiogeography in this block. In this paper, a new Middle Permian foraminiferal fauna is documented from the Xiala Formation in the Zhabuye area in the central Lhasa Block. This fauna is characterized by the presence of the Shanita-Hemigordiopsis foraminiferal assemblage, with its age to be the early Midian (Wordian) based on the coexisting fusulines Neoschwagerina craticulifera (Schwager), N. cheni Sheng and Kahlerina tenuitheca Wang, Sheng and Zhang. A review of the Shanita-Hemigordiopsis assemblage globally confirms that the age of this assemblage ranges from the late Murgabian to the Midian rather than extending into the Dzhulfian as previously recognized. This assemblage is widely distributed on the Cimmerian microcontinents and Gondwanan margin, but absent from the South China and Indochina blocks, which were approximately at the same latitude with Turkey in equatorial regions. Such a distribution pattern is better explained by the influence of oceanic currents flowing from equatorial regions to the Gondwanan margin along the Neotethys Ocean. It further suggests that the Neotethys Ocean may have opened by the Middle Permian to facilitate oceanic currents.

KeywordCimmeria Guadalupian Tethys Paleoceanography Tibet Biostratigraphy
DOI10.1016/j.palaeo.2021.110417
Indexed BySCI
Language英语
WOS KeywordSELONG XISHAN SECTION ; XAINZA AREA ; XIALA FORMATION ; GONDWANA-AFFINITY ; BRACHIOPOD FAUNA ; SOUTHWEST CHINA ; NORTHERN TIBET ; WESTERN YUNNAN ; BAOSHAN BLOCK ; XIZANG TIBET
Funding ProjectNational Science Foundation of China[91855205] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0706] ; Chinese Academy of Sciences[XDB26000000]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000648525800016
Funding OrganizationNational Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research ; Chinese Academy of Sciences
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38280
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Yi-chun(张以春)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Ju, Qi,Zhang, Yi-chun,Qiao, Feng,et al. A Middle Permian assemblage of smaller foraminifera (Shanita-Hemigordiopsis assemblage) from the central Lhasa Block and its paleobiogeographic implications[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,572:15.
APA Ju, Qi,Zhang, Yi-chun,Qiao, Feng,&Xu, Hai-peng.(2021).A Middle Permian assemblage of smaller foraminifera (Shanita-Hemigordiopsis assemblage) from the central Lhasa Block and its paleobiogeographic implications.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,572,15.
MLA Ju, Qi,et al."A Middle Permian assemblage of smaller foraminifera (Shanita-Hemigordiopsis assemblage) from the central Lhasa Block and its paleobiogeographic implications".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 572(2021):15.
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