globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.01.005
论文题名:
Paleoatmospheric pCO2 fluctuations across the Cretaceous-Tertiary boundary recorded from paleosol carbonates in NE China
作者: Huang C.; Retallack G.J.; Wang C.; Huang Q.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 385
起始页码: 95
结束页码: 105
语种: 英语
英文关键词: Atmospheric CO2 ; Chicxulub impact ; China ; Cretaceous ; Deccan Traps ; Paleosol ; Pedogenic carbonate ; Tertiary
英文摘要: A dramatic change in atmospheric composition has been postulated because of global carbon cycle disruption during the Cretaceous (K)-Tertiary (T) transition following the Chicxulub impact and Deccan Trap eruptions. Here, pedogenic carbonates were collected from drill core of a borehole (SK-1 (N)) straddling the Late Cretaceous and early Paleocene strata in the Songliao Basin, northeast China, to reconstruct atmospheric CO2 concentrations using a paleosol paleobarometer. Our estimates for atmospheric pCO2 from paleosol carbonates range between 277±115ppmv and 837±164ppmv between 67.8Ma and 63.1Ma. One large (~66-65.5Ma) and several small CO2 spikes (~64.7-~64.2Ma) during the latest Maastrichtian to earliest Danian are reported here and incorporated with previously published pCO2 estimates also estimated from paleosol carbonates. These CO2 spikes are attributed to one-million-year-long emplacement of the large Deccan flood basalts along with the extraterrestrial impact at the K-T boundary. © 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/69695
Appears in Collections:过去全球变化的重建

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作者单位: Department of Environmental Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China; Department of Geological Sciences, University of Oregon, Eugene, OR 97403, United States; School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China; Exploration and Development Research Institute, Daqing Oilfield Company Ltd., Daqing, Helongjiang 163712, China

Recommended Citation:
Huang C.,Retallack G.J.,Wang C.,et al. Paleoatmospheric pCO2 fluctuations across the Cretaceous-Tertiary boundary recorded from paleosol carbonates in NE China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,385
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