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Paleocene and Lower Eocene shallow-water limestones of Tibet: Microfacies analysis and correlation of the eastern Neo-Tethyan Ocean
Kahsnitz, Michaela M.1; Willems, Helmut1,2; Luo, Hui (罗辉)2; Zhou, Zhi-Cheng (周志澄)2
2018-06-01
Source PublicationPALAEOWORLD
ISSN1871-174X
Volume27Issue:2Pages:226-246
Abstract

Microfacial investigations of the Lower Paleogene sediments were based on four sections of the passive Indian (Ladakh, Tingri County, Gamba County and Yadong County) and one of the active Asian continental margin (Zhongba County). Eleven microfacies from the Tethyan Himalaya (prefixed with P for passive continental margin) and four from the Xigaze forearc basin (prefixed with A for active continental margin) were observed. The distribution of fossil assemblages in the environment ranges from the tidal flat and restricted lagoonal part of the inner carbonate ramp to the outer carbonate ramp: (P1) green algae pack-/grainstone with small miliolids, (P2) bioclast grainstone, (P3) Rotaliidae packstone, (P4) Miscellaneidae-Rotaliidae-Nummulitidae pack-/grainstone, (P5) laminated and bioturbated mud- and grainstone, (P6) Alveolina wacke/packstone with Soritidae, (P7) Nummulites-Alveolina-Orbitolites pack-/floatstone, (P8) Discocyclinidae-Nummulitidae pack-/floatstone, (P9) Rhodolith wacke-/packstone, (P10) mudstone with anhydrite nodules, (P11) planktonic foraminiferal wackestone, (Al) molluskan float-/rudstone, (A2) Nummulitidae wacke-/packstone, (A3) rhodolith wacke-/packstone, (A4) Discocyclinidae-Nummulitidae float-/rudstone. The correlation of our observations provides a detailed overview of the paleoenvironmental development and the sedimentary history of the eastern Neo-Tethyan Ocean, showing a deepening trend in two stages from Lower Paleocene to Lower Eocene. (C) 2017 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved.

KeywordPaleoenvironment Microfacies Analysis Tethyan Himalaya Xigaze Forearc Strata Paleogene Carbonate
DOI10.1016/j.palwor.2017.12.002
Language英语
WOS KeywordLarger Benthic Foraminifera ; India-asia Collision ; Southern Tibet ; Tethyan Himalaya ; Northwestern Himalaya ; Thermal Maximum ; Basin Evolution ; China ; Zanskar
Funding ProjectPriority Program Tibetan Plateau: Formation-Climate Ecosystem (TiP)[1372] ; Chinese Academy of Sciences (CAS)[XDB03010102] ; German Science Foundation[DFG Wi725/29] ; University of Bremen (Germany)
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000432457000007
Funding OrganizationPriority Program Tibetan Plateau: Formation-Climate Ecosystem (TiP) ; Chinese Academy of Sciences (CAS) ; German Science Foundation ; University of Bremen (Germany)
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/18699
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorKahsnitz, Michaela M.
Affiliation1.Univ Bremen, Dept Geosci, D-28359 Bremen, Germany
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Kahsnitz, Michaela M.,Willems, Helmut,Luo, Hui ,et al. Paleocene and Lower Eocene shallow-water limestones of Tibet: Microfacies analysis and correlation of the eastern Neo-Tethyan Ocean[J]. PALAEOWORLD,2018,27(2):226-246.
APA Kahsnitz, Michaela M.,Willems, Helmut,Luo, Hui ,&Zhou, Zhi-Cheng .(2018).Paleocene and Lower Eocene shallow-water limestones of Tibet: Microfacies analysis and correlation of the eastern Neo-Tethyan Ocean.PALAEOWORLD,27(2),226-246.
MLA Kahsnitz, Michaela M.,et al."Paleocene and Lower Eocene shallow-water limestones of Tibet: Microfacies analysis and correlation of the eastern Neo-Tethyan Ocean".PALAEOWORLD 27.2(2018):226-246.
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