Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation
Although documented from Estonia, Latvia, Sweden, eastern North America, and China, the Middle Ordovician (Darriwilian) positive delta C-13 excursion known as the MDICE has previously not been recognized with certainty in South America. The most promising region in South America for detailed Middle...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2013
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Online Access: | https://lup.lub.lu.se/record/4272090 https://doi.org/10.1016/j.palaeo.2013.02.028 |
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ftulundlup:oai:lup.lub.lu.se:7ff9e65b-e24c-4cd6-9511-373f55ef4a92 2023-05-15T17:21:54+02:00 Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation Albanesi, Guillermo L. Bergstroem, Stig M. Schmitz, Birger Serra, Fernanda Feltes, Nicolas A. Voldman, Gustavo G. Ortega, Gladys 2013 https://lup.lub.lu.se/record/4272090 https://doi.org/10.1016/j.palaeo.2013.02.028 eng eng Elsevier https://lup.lub.lu.se/record/4272090 http://dx.doi.org/10.1016/j.palaeo.2013.02.028 wos:000328445900004 scopus:84885840204 Palaeogeography, Palaeoclimatology, Palaeoecology; 389, pp 48-63 (2013) ISSN: 1872-616X Geology Carbon isotope stratigraphy Ordovician Argentina Global correlation Precordillera contributiontojournal/article info:eu-repo/semantics/article text 2013 ftulundlup https://doi.org/10.1016/j.palaeo.2013.02.028 2023-02-01T23:29:40Z Although documented from Estonia, Latvia, Sweden, eastern North America, and China, the Middle Ordovician (Darriwilian) positive delta C-13 excursion known as the MDICE has previously not been recognized with certainty in South America. The most promising region in South America for detailed Middle Ordovician carbon isotope research is the Precordillera of western Argentina, where there are many excellent exposures of biostratigraphically well-dated carbonate successions spaning the Tremadocian through Sandbian stratigraphic interval. For this project, we collected numerous isotope and conodont samples from the middle Darriwilian Las Chacritas and Aguaditas formations at their type localities, which yielded important biostratigraphic data as well as informative delta C-13(carb) values. In the E. pseudoplanus Zone in the upper half of the Las Chacritas Formation, there is a relatively modest but distinct delta C-13(carb) excursion. Because its stratigraphic position and magnitude closely agree with the MDICE in other parts of the world, we recognize it as the first firm record of this excursion in South America. The fact that the delta C-13(carb) curve from the Las Aguaditas Formation shows no such excursion is due to the existence of a stratigraphic gap between the Lower and Middle Members of this formation that cuts out the excursion interval. The Precordilleran MDICE is used for detailed long-range correlations with successions in Baltoscandia, Newfoundland, and China illustrating the usefulness of also this delta C-13(carb) excursion as a global stratigraphic tool. A recent proposal of a greatly extended chronostratigraphic range of the Table Head Group on Newfoundland is rejected based on well-established biostratigraphic evidence. (C) 2013 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Newfoundland Lund University Publications (LUP) Argentina Table Head ENVELOPE(-55.698,-55.698,52.083,52.083) Palaeogeography, Palaeoclimatology, Palaeoecology 389 48 63 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology Carbon isotope stratigraphy Ordovician Argentina Global correlation Precordillera |
spellingShingle |
Geology Carbon isotope stratigraphy Ordovician Argentina Global correlation Precordillera Albanesi, Guillermo L. Bergstroem, Stig M. Schmitz, Birger Serra, Fernanda Feltes, Nicolas A. Voldman, Gustavo G. Ortega, Gladys Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
topic_facet |
Geology Carbon isotope stratigraphy Ordovician Argentina Global correlation Precordillera |
description |
Although documented from Estonia, Latvia, Sweden, eastern North America, and China, the Middle Ordovician (Darriwilian) positive delta C-13 excursion known as the MDICE has previously not been recognized with certainty in South America. The most promising region in South America for detailed Middle Ordovician carbon isotope research is the Precordillera of western Argentina, where there are many excellent exposures of biostratigraphically well-dated carbonate successions spaning the Tremadocian through Sandbian stratigraphic interval. For this project, we collected numerous isotope and conodont samples from the middle Darriwilian Las Chacritas and Aguaditas formations at their type localities, which yielded important biostratigraphic data as well as informative delta C-13(carb) values. In the E. pseudoplanus Zone in the upper half of the Las Chacritas Formation, there is a relatively modest but distinct delta C-13(carb) excursion. Because its stratigraphic position and magnitude closely agree with the MDICE in other parts of the world, we recognize it as the first firm record of this excursion in South America. The fact that the delta C-13(carb) curve from the Las Aguaditas Formation shows no such excursion is due to the existence of a stratigraphic gap between the Lower and Middle Members of this formation that cuts out the excursion interval. The Precordilleran MDICE is used for detailed long-range correlations with successions in Baltoscandia, Newfoundland, and China illustrating the usefulness of also this delta C-13(carb) excursion as a global stratigraphic tool. A recent proposal of a greatly extended chronostratigraphic range of the Table Head Group on Newfoundland is rejected based on well-established biostratigraphic evidence. (C) 2013 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Albanesi, Guillermo L. Bergstroem, Stig M. Schmitz, Birger Serra, Fernanda Feltes, Nicolas A. Voldman, Gustavo G. Ortega, Gladys |
author_facet |
Albanesi, Guillermo L. Bergstroem, Stig M. Schmitz, Birger Serra, Fernanda Feltes, Nicolas A. Voldman, Gustavo G. Ortega, Gladys |
author_sort |
Albanesi, Guillermo L. |
title |
Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
title_short |
Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
title_full |
Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
title_fullStr |
Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
title_full_unstemmed |
Darriwilian (Middle Ordovician) delta C-13(carb) chemostratigraphy in the Precordillera of Argentina: Documentation of the middle Darriwilian Isotope Carbon Excursion (MDICE) and its use for intercontinental correlation |
title_sort |
darriwilian (middle ordovician) delta c-13(carb) chemostratigraphy in the precordillera of argentina: documentation of the middle darriwilian isotope carbon excursion (mdice) and its use for intercontinental correlation |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://lup.lub.lu.se/record/4272090 https://doi.org/10.1016/j.palaeo.2013.02.028 |
long_lat |
ENVELOPE(-55.698,-55.698,52.083,52.083) |
geographic |
Argentina Table Head |
geographic_facet |
Argentina Table Head |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Palaeogeography, Palaeoclimatology, Palaeoecology; 389, pp 48-63 (2013) ISSN: 1872-616X |
op_relation |
https://lup.lub.lu.se/record/4272090 http://dx.doi.org/10.1016/j.palaeo.2013.02.028 wos:000328445900004 scopus:84885840204 |
op_doi |
https://doi.org/10.1016/j.palaeo.2013.02.028 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
389 |
container_start_page |
48 |
op_container_end_page |
63 |
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1766107900607987712 |