Positive carbon isotope excursions: global correlation and genesis in the Middle–Upper Ordovician in the northern Tarim Basin, Northwest China

Cunge, Liu; Liu, Qi; Liu, Yongli; Luo, Mao; Xiaoming, Shao; Luo, Peng

doi:10.1007/s12182-016-0096-3

Cited by 16 publications

(6 citation statements)

References 26 publications

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“…In the Argentine Precordillera, incomplete MDICE records have also been reported (Albanesi et al, 2013). In other areas, such as the Tarim Basin, South Korea, Siberia, and North America, the characteristics of the MDICE vary in each region, but it is dated in all sections in the Y. crassus to E. pseudoplanus biozones (Figure 8) (Ainsaar et al, 2015;Bang & Lee, 2020;Calner et al, 2014;Edwards & Saltzman, 2014;Lehnert, Meinhold, Wu, Calner, & Joachimski, 2014;Leslie et al, 2011;Liu et al, 2016). Globally, the long-term trend of increasing δ 13 C carb values from the Y. crassus Biozone to E. pseudoplanus Biozone also have global correlation significance especially in South China, representing the rising limb of MDICE.…”

Section: Discussionmentioning

confidence: 99%

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

et al. 2021

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Middle to Late Ordovician carbonates were collected in South China (Anhui Province) from the Kuniutan, Datianba, and Pagoda formations in the Dingxiang and Daling sections and analysed for high-resolution carbon isotope chemostratigraphy. An increase by 0.4‰ in δ 13 C carb is observed in the upper part of the Kuniutan Formation (Eoplacognathus pseudoplanus Biozone), representing the rising limb of the Middle Darriwilian Isotopic Carbon Excursion (MDICE). In the upper part of the Datianba Formation, positive shifts of ca. 1‰ are recorded in the studied section which compare with the carbon shifts reported in North America and Baltoscandia. A pronounced positive δ 13 C carb excursion of ca. 1.5‰ from the lower part of the Pagoda Formation can be correlated with the global Guttenberg Isotopic Carbon Excursion (GICE). The documentation of three carbon isotope shifts in this study provides new evidence for changes in the global carbon cycle from Darriwilian to Early Katian which could have been influenced by changes in global climate and primary productivity.

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Section: Discussionmentioning

confidence: 99%

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

et al. 2021

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“…In addition, numerous studies have focused on positive carbon isotope excursions in Lower Palaeozoic strata and their utility in performing global correlations (Sial et al 2008(Sial et al , 2013Cramer et al 2011;Munnecke et al 2011;Bergström et al 2012;Calner et al 2012;Albanesi et al 2013;Edwards & Saltzman, 2014). For example, the Middle Ordovician (Darriwilian) positive δ 13 C excursion (MDICE, Dw2/3), the Guttenberg Isotopic Carbon Excursion (GICE, Ka1) and the Hirnantian isotope carbon excursion (HICE, Hi1) are documented in the Middle-Late Ordovician Period (Bergstrom et al 2009;Liu et al 2016a;Zhang & Munnecke, 2016). Several problems still exist with regard to oil and gas exploration in the Lower-Middle Ordovician strata of the Tarim Basin, NW China.…”

Section: Introductionmentioning

confidence: 99%

Carbon isotope (δ¹³C_carb) stratigraphy of the Early–Middle Ordovician (Tremadocian–Darriwilian) carbonate platform in the Tarim Basin, NW China: implications for global correlations

Yang

Tang

et al. 2020

Geol. Mag.

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Guided by conodont biostratigraphy and unconformities observed in the field, stable carbon isotopic analysis (δ13Ccarb) was performed on 210 samples from Lower–Middle Ordovician (Tremadocian to Darriwilian) sections and wells in the Tarim Basin, NW China. The δ13C trend in the Tarim Basin sections has three distinct characteristics: (1) from the Tremadocian to the Floian, a positive shift from −1.9 ‰ to −0.2 ‰ is observed near the boundary between the Penglaiba Formation and the Yingshan Formation; (2) from the Floian to the Dapingian, a positive shift in δ13C from −3 ‰ to −0.7 ‰ occurred under large-scale sea-level rise and a change in the sedimentary environment from a restricted platform to an open platform. Changes in the conodont type are also observed in the Tabei region; and (3) from the Dapingian to the Darriwilian, δ13C first decreased and then increased, showing a negative shift at the Dapingian–Darriwilian boundary. During the Floian, δ13C decreased in the study area, while it first decreased and then increased in other regions, which may reflect local sea-level movements in response to isostatic crustal movements. Two types of positive shift were identified at the Floian–Dapingian boundary, which likely show the effects of local factors, including a disconformity, dolomitization, and platform restriction, superimposed on the global signal of the carbon isotope. Some conodont zonations and recurrent negative excursions in Tremadocian, Floian and Dapingian stages appear to be truncated by unconformities, which are accompanied by short-term subaerial exposure due to sea-level fall and local tectonic uplift.

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“…Carbon isotope chemostratigraphy of the Ordovician is still in the pioneer phase of development in China, especially compared with the large number of studies carried out in North America and northern Europe. The work on the Late Ordovician δ 13 C isotopes within China has focused on the GICE (Bergström et al 2009b;Munnecke et al 2011;Fan et al 2015;Liu et al 2016a;Zhang & Munnecke, 2016) and the HICE (Wang et al 1993(Wang et al , 1997(Wang et al , 2008X Chen et al 2006;Fan et al 2009;Yan et al 2009;Zhang et al 2009;Gorjan et al 2012;Liu et al 2016b;C Chen et al 2017), whereas far less information is available for the other Katian positive carbon isotope excursions between these two prominent ones. A possible Whitewater excursion, identified both in the Jiangnan Region of South China (Munnecke et al 2011) and in the northeastern Tarim Basin of NW China (Zhang & Munnecke, 2016), is the first documentation for the mid-late Katian carbonisotope excursions in China.…”

Section: Introductionmentioning

confidence: 99%

“…2011; Fan et al . 2015; Liu et al 2016 a ; Zhang & Munnecke, 2016) and the HICE (Wang et al . 1993, 1997, 2008; X Chen et al .…”

Section: Introductionmentioning

confidence: 99%

Katian (Upper Ordovician) carbon isotope chemostratigraphy in the Neixiang area, central China: implications for intercontinental correlation

et al. 2019

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The Katian (Upper Ordovician) Shiyanhe Formation at the Sigang section, Neixiang area, Henan Province, central China, has been investigated for carbon isotope (δ13Ccarb) chemostratigraphy. The carbon isotopic data document signal between the two major Ordovician positive shifts in δ13C, the early Katian Guttenberg and the Hirnantian excursions. The Kope (Ka1/2), Fairview (Ka2/3), Waynesville (Ka3/4), Whitewater (Ka4) excursions and a doubtful Elkhorn (Ka4) excursion are identified herein. The continuous and well-defined conodont zonal succession of the Sigang section provides a secure biostratigraphic framework for the mid-late Katian carbon isotope chemostratigraphy in China. Correlation between carbon-isotope data curve and the relative sea-level changes shows no clear correspondence, and hence the sea-level change is probably not the main driver of δ13C excursions during the Katian. Intercontinentally, the mid–late Katian carbon isotope excursions, identified mainly in the North American and Baltoscandian successions, are useful for improving long-distance stratigraphic correlations. This further suggests that these excursions represent global perturbations in the carbon cycle.

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Positive carbon isotope excursions: global correlation and genesis in the Middle–Upper Ordovician in the northern Tarim Basin, Northwest China

Abstract: Stable carbon isotope ratio (d 13

Cited by 16 publications

References 26 publications

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

Carbon isotope (δ¹³C_carb) stratigraphy of the Early–Middle Ordovician (Tremadocian–Darriwilian) carbonate platform in the Tarim Basin, NW China: implications for global correlations

Katian (Upper Ordovician) carbon isotope chemostratigraphy in the Neixiang area, central China: implications for intercontinental correlation

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Positive carbon isotope excursions: global correlation and genesis in the Middle–Upper Ordovician in the northern Tarim Basin, Northwest China

Abstract: Stable carbon isotope ratio (d 13

Cited by 16 publications

References 26 publications

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

Middle to Late Ordovician carbon isotope chemostratigraphy of the Lower Yangtze Platform: Implications for global correlation

Carbon isotope (δ13Ccarb) stratigraphy of the Early–Middle Ordovician (Tremadocian–Darriwilian) carbonate platform in the Tarim Basin, NW China: implications for global correlations

Katian (Upper Ordovician) carbon isotope chemostratigraphy in the Neixiang area, central China: implications for intercontinental correlation

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Carbon isotope (δ¹³C_carb) stratigraphy of the Early–Middle Ordovician (Tremadocian–Darriwilian) carbonate platform in the Tarim Basin, NW China: implications for global correlations