Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China
The organic carbon isotope data through the unweathered Ordovician-Silurian boundary strata at the Wangjiawan Riverside section, which is c. 180 m southeast of the Wangjiawan North section, the GSSP for the base of the Hirnantian Stage (Upper Ordovician), show that a positive delta C-13(org) excursi...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Language: | English |
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Online Access: | http://ir.nigpas.ac.cn/handle/332004/19437 https://doi.org/10.1016/j.palaeo.2009.03.007 |
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ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/19437 2023-05-15T18:22:57+02:00 Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China Fan, Junxuan Peng, Ping'an Melchin, M. J. 2009-05-15 http://ir.nigpas.ac.cn/handle/332004/19437 https://doi.org/10.1016/j.palaeo.2009.03.007 英语 eng ELSEVIER SCIENCE BV PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/19437 doi:10.1016/j.palaeo.2009.03.007 Carbon isotopes Ordovician-Silurian boundary Hirnantian South China Glaciation Mass extinction GLOBAL CORRELATION ANTICOSTI ISLAND YANGTZE REGION SEA QUEBEC PERSPECTIVE GRAPTOLITE PLATFORM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary 期刊论文 2009 ftchinacscnigpas https://doi.org/10.1016/j.palaeo.2009.03.007 2019-08-14T12:44:16Z The organic carbon isotope data through the unweathered Ordovician-Silurian boundary strata at the Wangjiawan Riverside section, which is c. 180 m southeast of the Wangjiawan North section, the GSSP for the base of the Hirnantian Stage (Upper Ordovician), show that a positive delta C-13(org) excursion begins just below the base of the Hirnantian Stage and peaks in the lower part of the N. extraordinarius Biozone. This is followed by an interval of slightly reduced delta C-13 values and a second peak of 2 parts per thousand above pre-Hirnantian values, which occurs in the lower part of the N. persculptus Biozone (upper Hirnantian). The peaks in delta C-13(org) values can be correlated well with episodes of glacial expansion described from Africa and peri-Gondwanan Europe. Evidence from sedimentological, faunal, and geochemical data from South China, as well as the evidence of glacial sediments in North Africa, all suggests a short-lived glaciation of similar to 1 Ma in the Ordovician South Pole region, consisting of at least two major pulses. The first phase of gradual glacial expansion began just before the Hirnantian Epoch and the second phase ended with rapid melting in the late Hirnantian (early N. persculptus Biozone). (C) 2009 Elsevier B.V. All rights reserved. Report South pole Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) South Pole Palaeogeography, Palaeoclimatology, Palaeoecology 276 1-4 160 169 |
institution |
Open Polar |
collection |
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacscnigpas |
language |
English |
topic |
Carbon isotopes Ordovician-Silurian boundary Hirnantian South China Glaciation Mass extinction GLOBAL CORRELATION ANTICOSTI ISLAND YANGTZE REGION SEA QUEBEC PERSPECTIVE GRAPTOLITE PLATFORM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Carbon isotopes Ordovician-Silurian boundary Hirnantian South China Glaciation Mass extinction GLOBAL CORRELATION ANTICOSTI ISLAND YANGTZE REGION SEA QUEBEC PERSPECTIVE GRAPTOLITE PLATFORM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Fan, Junxuan Peng, Ping'an Melchin, M. J. Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
topic_facet |
Carbon isotopes Ordovician-Silurian boundary Hirnantian South China Glaciation Mass extinction GLOBAL CORRELATION ANTICOSTI ISLAND YANGTZE REGION SEA QUEBEC PERSPECTIVE GRAPTOLITE PLATFORM Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
description |
The organic carbon isotope data through the unweathered Ordovician-Silurian boundary strata at the Wangjiawan Riverside section, which is c. 180 m southeast of the Wangjiawan North section, the GSSP for the base of the Hirnantian Stage (Upper Ordovician), show that a positive delta C-13(org) excursion begins just below the base of the Hirnantian Stage and peaks in the lower part of the N. extraordinarius Biozone. This is followed by an interval of slightly reduced delta C-13 values and a second peak of 2 parts per thousand above pre-Hirnantian values, which occurs in the lower part of the N. persculptus Biozone (upper Hirnantian). The peaks in delta C-13(org) values can be correlated well with episodes of glacial expansion described from Africa and peri-Gondwanan Europe. Evidence from sedimentological, faunal, and geochemical data from South China, as well as the evidence of glacial sediments in North Africa, all suggests a short-lived glaciation of similar to 1 Ma in the Ordovician South Pole region, consisting of at least two major pulses. The first phase of gradual glacial expansion began just before the Hirnantian Epoch and the second phase ended with rapid melting in the late Hirnantian (early N. persculptus Biozone). (C) 2009 Elsevier B.V. All rights reserved. |
format |
Report |
author |
Fan, Junxuan Peng, Ping'an Melchin, M. J. |
author_facet |
Fan, Junxuan Peng, Ping'an Melchin, M. J. |
author_sort |
Fan, Junxuan |
title |
Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
title_short |
Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
title_full |
Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
title_fullStr |
Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
title_full_unstemmed |
Carbon isotopes and event stratigraphy near the Ordovician-Silurian boundary, Yichang, South China |
title_sort |
carbon isotopes and event stratigraphy near the ordovician-silurian boundary, yichang, south china |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2009 |
url |
http://ir.nigpas.ac.cn/handle/332004/19437 https://doi.org/10.1016/j.palaeo.2009.03.007 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.nigpas.ac.cn/handle/332004/19437 doi:10.1016/j.palaeo.2009.03.007 |
op_doi |
https://doi.org/10.1016/j.palaeo.2009.03.007 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
276 |
container_issue |
1-4 |
container_start_page |
160 |
op_container_end_page |
169 |
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1766202360474894336 |