Negative C-isotope excursions at the Permian-Triassic boundary linked to volcanism
Negative C-isotope excursions at the Permian-Triassic boundary linked to volcanism
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二叠纪-三叠纪边界的负C同位素偏移与火山活动有关
DOI:
10.1130/g33329.1
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发表时间:
2012-11
期刊:
影响因子:
5.8
通讯作者:
Qinglai Feng
中科院分区:
文献类型:
--
作者:
Jun Shen;Thomas J Algeo;Qing Hu;Ning Zhang;Lian Zhou;Wenchen Xia;Qinglai Feng
Two Permian-Triassic boundary (PTB) sections from south China provide insights regarding the origin of negative excursions in carbonate and organic carbon isotope records associated with the largest mass extinction in Earth history. Xiakou, a carbonate ramp section, exhibits delta C-13(carb) excursions of up to -2 parts per thousand, and Xinmin, a deep-shelf section, exhibits delta C-13(org) excursions of up to -6 parts per thousand. In both sections, these excursions are associated with volcanic ash layers, and excursion size scales with ash layer thickness. These relationships document the direct influence of volcanism on the Earth-surface carbon cycle during the PTB crisis. Previous studies of ash layers in south China PTB sections have invoked a source in regional subduction-zone volcanism in the eastern Tethys, but our analysis suggests that these ash layers may represent distal deposits from large-scale explosive eruptions of the Siberian Traps. If confirmed by further investigation, this hypothesis would have important implications both for kill mechanisms during the PTB crisis as well as for refinement of the eruption history of the Siberian Traps.
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影响因子:
3.7
作者:
J. Shen;T. J. Algeo;L. Zhou;Q. Feng;J. Yu;B. Ellwood
通讯作者:
B. Ellwood
影响因子:
5.8
作者:
A. Draut;P. Clift
通讯作者:
A. Draut;P. Clift
影响因子:
6.5
作者:
Yin Hongfu;Huang Siji;Zhang Kexing;H. Hansen;Yang Feng-qing;Ding Meihua;Bi Xianmei;W. C. Sweet;Yang Zunyi;J. Dickins
通讯作者:
Yin Hongfu;Huang Siji;Zhang Kexing;H. Hansen;Yang Feng-qing;Ding Meihua;Bi Xianmei;W. C. Sweet;Yang Zunyi;J. Dickins
DOI:
10.1016/j.palaeo.2006.11.010
发表时间:
2007-05
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
A. Riccardi;L. Kump;M. Arthur;S. D’Hondt
通讯作者:
A. Riccardi;L. Kump;M. Arthur;S. D’Hondt
影响因子:
5.8
作者:
Joachimski, Michael M.;Lai, Xulong;Sun, Yadong
通讯作者:
Sun, Yadong