globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.10.003
论文题名:
Reconstructing marine redox conditions for the transition between Cambrian Series 2 and Cambrian Series 3, Kaili area, Yangtze Platform: Evidence from biogenic sulfur and degree of pyritization
作者: Guo Q.; Strauss H.; Zhao Y.; Yang X.; Peng J.; Yang Y.; Deng Y.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 398
起始页码: 144
结束页码: 153
语种: 英语
英文关键词: Cambrian Series 2 and Cambrian Series 3 ; Degree of pyritization ; Sulfide sulfur isotope ; Yangtze Platform
英文摘要: The transition between Series 2 and Series 3 of the Cambrian Period was a time of environmental perturbations and biological innovations. A generally positive sulfur isotopic composition of sedimentary pyrite with δ34Spyrite values between +1.7 and +37.3‰ is consistent with a biological origin via reduction of strongly 34S enriched seawater sulfate. No substantial changes in the redox conditions of the water column are discernible from the DOP record, and the sulfide sulfur isotopic composition is independent of DOP, in particular an excursion towards less 34S enriched values immediately preceding the proposed level of the Cambrian Series 2 to Cambrian Series 3 transition. This level is also characterized by a negative carbonate carbon isotope excursion, believed to reflect the transgressive flooding of the shelf with basinal anoxic waters. Low DOP values would suggest that these might have been ferruginous rather than sulfidic. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69427
Appears in Collections:过去全球变化的重建

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作者单位: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Institut für Geologie und Paläontologie, Westfälische, Wilhelms-Universität Münster, Corrensstrasse 24, 48149 Münster, Germany; Institute of Resource and Environmental Engineering, Guizhou University, Guiyang 550002, China

Recommended Citation:
Guo Q.,Strauss H.,Zhao Y.,et al. Reconstructing marine redox conditions for the transition between Cambrian Series 2 and Cambrian Series 3, Kaili area, Yangtze Platform: Evidence from biogenic sulfur and degree of pyritization[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,398
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