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Stable carbon isotope stratigraphy in the Ordovician of South China
Munnecke, Axel1; Zhang, Yuandong (张元动)2; Liu, Xiao (刘晓)2; Cheng, Junfeng2

About 500 samples from 11 Ordovician sections in South China have been analysed for their delta C-13(carb) composition. Four sections are located in the Yangtze platform region, the remaining seven sections in the Jiangnan slope region. The sections span more or less the entire Ordovician, but the sample resolution in its lower part (Tremadocian to Dapingian) is lower than in its upper part (Darriwilian to Hirnantian). Overall, the data show a good correlation with the published global isotope curve. At the Cambrian-Ordovician boundary positive values are observed. In the succeeding Tremadocian the values decrease and remain negative into the early Floian. In the late Floian, the values increase to slightly positive. The correlation of Dapingian rocks between the Yangtze and the Jiangnan regions is somewhat problematic which might be due to high siliciclastic input in the Yangtze section. In the Darriwilian a small positive excursion is observed in the Yangtze platform area, however, it is missing in the Jiangnan slope area. This excursion probably correlates with the mid-Darriwilian excursion (MDICE) reported from Baltoscandia. Both chemostratigraphy and conodont biostratigraphy indicate a possible gap between the Shihtzupu Formation and the Pagoda Formation, i.e. most of the Sandbian is probably not represented in the Upper Yangtze region. The earliest Katian is characterised by a pronounced positive excursion correlating with the well-known global Guttenberg excursion (GICE). In the late Katian at least one additional positive excursion was determined. The precise biostratigraphy, however, is not clear, and therefore it is not known which of the known four to five remaining Katian delta C-13 excursions identified in Baltica correlate(s) with the one(s) observed in the present study, and further biostratigraphic study is required. The lower part of the Hirnantian excursion (HICE) is probably not preserved, with only small remnants of the HICE observed near the base of the Kuanyinchiao Bed. (C) 2011 Elsevier B.V. All rights reserved.

KeywordOrdovician South China Stable Carbon Isotopes Stratigraphy Graptolites
WOS KeywordBiodiversification Event Gobe ; Global Boundary Stratotype ; Marine Organic-matter ; Middle Ordovician ; Delta-c-13 Excursion ; Mass Extinction ; Latest Ordovician ; Anticosti Island ; Yangtze Region ; Base
Funding ProjectCAS[KZCX2-YW-122] ; NSFC[40532009] ; Deutsche Forschungsgemeinschaft (DFG)[Mu 2352/1] ; Robert-Bosch-Stiftung[Nr. 32.5.8003.0009.0] ; Uni-Bund Erlangen
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000293424300002
Funding OrganizationCAS ; NSFC ; Deutsche Forschungsgemeinschaft (DFG) ; Robert-Bosch-Stiftung ; Uni-Bund Erlangen
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Document Type期刊论文
Corresponding AuthorMunnecke, Axel
Affiliation1.GeoZentrum Nordbayern, Fachgrp Palaoumwelt, D-91054 Erlangen, Germany
2.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China
Recommended Citation
GB/T 7714
Munnecke, Axel,Zhang, Yuandong ,Liu, Xiao ,et al. Stable carbon isotope stratigraphy in the Ordovician of South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2011,307(1-4):17-43.
APA Munnecke, Axel,Zhang, Yuandong ,Liu, Xiao ,&Cheng, Junfeng.(2011).Stable carbon isotope stratigraphy in the Ordovician of South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,307(1-4),17-43.
MLA Munnecke, Axel,et al."Stable carbon isotope stratigraphy in the Ordovician of South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 307.1-4(2011):17-43.
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