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The Triassic to Early Jurassic palynological record of the Tarim Basin, China
Swedish Museum of Natural History, Department of Paleobiology.
Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China.
Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China.
Swedish Museum of Natural History, Department of Paleobiology.
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2018 (English)In: Palaeobiodiversity and Palaeoenvironments, ISSN 1867-1594, E-ISSN 1867-1608, Vol. 98, p. 7-28Article in journal (Refereed) Published
Abstract [en]

The Tarim Basin, located in northwestern China, is an important oil-bearing region, and the extensive non-marine Mesozoic successions make this a key location for understanding environmental changes through the Triassic and Jurassic. Palynological analyses on samples from Lunnan-1 and Tazhong-1 drill cores from the northern and central part of the Tarim Basin reveal wellpreserved spore–pollen assemblages. Five palynological assemblages, i.e. Tarim Triassic 1 (TT1)–Tarim Triassic 4 (TT4) and Tarim Jurassic 1 (TJ1), spanning the Early Triassic to Early Jurassic were identified based on compositional changes, which are supported by ordination of samples using non-metric multidimensional scaling (NMDS). The Early Triassic assemblages possess abundant bryophytes and Densoisporites spp.-producers, which potentially represent a recovery succession following the end-Permian event. The Late Triassic spore–pollen assemblages are more similar to those of the North China Palynofloral Province compared to the South China Province. Based on our phytogeographic analysis, we propose that the western section of the boundary between the North and South China palynofloras should be placed at the southern margin of the Tarim Basin.

Place, publisher, year, edition, pages
Berlin: Springer Berlin/Heidelberg, 2018. Vol. 98, p. 7-28
Keywords [en]
Phytogeography, Palaeovegetation, Biostratigraphy, Spores and pollen, Triassic and Jurassic, Tarim Basin
National Category
Other Earth and Related Environmental Sciences
Research subject
Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-3232DOI: 10.1007/s12549-017-0279-yOAI: oai:DiVA.org:nrm-3232DiVA, id: diva2:1276087
Funder
Swedish Research Council, 2015-04264
Note

This work was supported by the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No.: XDB03010103 and XDB18000000), the China Scholarship Council (201504910609) and the Swedish Research Council (Grant VR 2015-04264). This is also a contribution of IGCP project 632.

Available from: 2019-01-01 Created: 2019-01-07Bibliographically approved

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Publisher's full texthttps://link.springer.com/article/10.1007/s12549-017-0279-y

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