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The Hirnantian δ13C Positive Excursion in the Nabiullino Section (South Urals).
- Source :
- Doklady Earth Sciences; Feb2018, Vol. 478 Issue 2, p199-203, 5p
- Publication Year :
- 2018
-
Abstract
- The upper Sandbian, Katian, and Hirnantian complexes of conodonts in the upper Ordovician section of the western slope of the Southern Urals near the village of Nabiullino were studied. The δ<superscript>13</superscript>C positive excursion with a maximum of 3.3‰ associated with the global Hirnantian isotopic event, HICE, was fixed for the first time. This excursion shows the beginning of the Hirnantian stage in the terrigenous-carbonate section of the upper Ordovician in the Southern Urals. It coincides with the first occurrence of the Hirnantian conodont species of <italic>Gamachignathus ensifer</italic> and the conodonts of shallow-water biophacies, <italic>Aphelognathus-Ozarkodina</italic>, reflecting the global glacio-eustatic event. [ABSTRACT FROM AUTHOR]
- Subjects :
- ISOTOPIC analysis
ORDOVICIAN Period
LLANDOVERY series
DOLOMITE
OXIDIZING agents
Subjects
Details
- Language :
- English
- ISSN :
- 1028334X
- Volume :
- 478
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Doklady Earth Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 128547985
- Full Text :
- https://doi.org/10.1134/S1028334X18020307