Back to Search
Start Over
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 δ13C 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 :
- Academic Search Index
- Journal :
- Doklady Earth Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 128547985
- Full Text :
- https://doi.org/10.1134/S1028334X18020307