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Ordovician stable carbon isotope stratigraphy in the Tarim Basin, NW China
Zhang, Yuandong (张元动)1; Munnecke, Axel2

The Tarim Basin, located in NW-China, represents one of China's major palaeoplates. Its palaeogeographic position in the Ordovician, however, is debated. In this study we present biostratigraphically controlled stable carbon isotope data from some 600 samples spanning almost the entire Ordovician in order to provide a tool that can be used for future chemostratigraphic correlations. The data correlate well with results from South China, and several major global delta C-13 excursions such as the MDICE (Dw2/3), SAICE (Sa2), GICE (Ka1), and Whitewater excursion (Ka4) are documented for the first time from the Tarim Basin. Major sedimentary gaps are detected in the lower Floian between the Penglaiba and Yinshan formations, in the upper Darriwilian to lower Sandbian between the Dawangou and Saergan (or Kanling) formations, and in the latest Sandbian between the Kanling and Qilang formations as well as between the Tumuxiuke and Lianglitag formations. Three scenarios for the depositional history of the late Darriwilian to early Sandbian Saergan Formation, which represents an important hydrocarbon source rock in the Tarim Basin, are discussed with respect to their bio- and chemostratigraphic implications. The mid-upper Ordovician rocks recording high delta C-13 values have been deposited during transgressive or highstand intervals, whereas the regressive intervals are mostly missing. This results in a stacking of several positive excursions, and thus chemostratigraphic correlation without biostratigraphic control might produce misleading results, especially for shallow-water carbonates. (C) 2015 Elsevier B.V. All rights reserved.

KeywordOrdovician Tarim Stable Carbon Isotope Chemostratigraphy Source Rocks
WOS KeywordLimestone-marl Alternations ; Delta-c-13 Chemostratigraphy ; Major Blocks ; Argentine Precordillera ; Yangtze Platform ; Southern Sweden ; Excursion Mdice ; North-china ; Middle ; Succession
Funding ProjectNSFC ; CAS[41172034] ; CAS[2011ZX05008-001-10] ; CAS[XDB10010100] ; Deutsche Forschungsgemeinschaft (DFG)[Mu 2352/1] ; Robert-Bosch-Stiftung[32.5.8003.0009.0]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000381541200012
Funding OrganizationNSFC ; CAS ; Deutsche Forschungsgemeinschaft (DFG) ; Robert-Bosch-Stiftung
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Document Type期刊论文
Corresponding AuthorZhang, Yuandong (张元动)
Affiliation1.Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing, Jiangsu, Peoples R China
2.Univ Erlangen Nurnberg, GeoZentrum Nordbayem, Fachgrp Palaoumwelt, Loewenichstr 28, D-91054 Erlangen, Germany
Recommended Citation
GB/T 7714
Zhang, Yuandong ,Munnecke, Axel. Ordovician stable carbon isotope stratigraphy in the Tarim Basin, NW China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,458:154-175.
APA Zhang, Yuandong ,&Munnecke, Axel.(2016).Ordovician stable carbon isotope stratigraphy in the Tarim Basin, NW China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,458,154-175.
MLA Zhang, Yuandong ,et al."Ordovician stable carbon isotope stratigraphy in the Tarim Basin, NW China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 458(2016):154-175.
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