Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)

Systematic study of microfossil associations on the Krivi Potok section (Gučevo Mt. area, NW Serbia) has been carried out to document and to refine the Lower Triassic stratigraphic correlations within Alpine-Mediterranean domain. Field investigation and laboratory process have enabled the...

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Main Authors: Sudar Milan N., Chen Yanlong, Kolar-Jurkovšek Tea, Jurkovšek Bogdan, Jovanović Divna, Forel Marie-Beatrice
Format: Article
Language:English
Published: Faculty of Mining and Geology, Belgrade 2014-01-01
Series:Geološki Anali Balkanskoga Poluostrva
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/0350-0608/2014/0350-06081475001S.pdf
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author Sudar Milan N.
Chen Yanlong
Kolar-Jurkovšek Tea
Jurkovšek Bogdan
Jovanović Divna
Forel Marie-Beatrice
author_facet Sudar Milan N.
Chen Yanlong
Kolar-Jurkovšek Tea
Jurkovšek Bogdan
Jovanović Divna
Forel Marie-Beatrice
author_sort Sudar Milan N.
collection DOAJ
description Systematic study of microfossil associations on the Krivi Potok section (Gučevo Mt. area, NW Serbia) has been carried out to document and to refine the Lower Triassic stratigraphic correlations within Alpine-Mediterranean domain. Field investigation and laboratory process have enabled the identification of lowermost Olenekian (lower Smithian) conodonts, ostracodes and pyrite framboids. Two conodont zones are established in this region, in ascending order they are: Pachycladina obliqua-Foliella gardenae Assemblage Zone and Neospathodus planus Zone. A new ostracode species Paracypris ? krivipotokensis FOREL n. sp. has been described, it co-occurs with conodont Neospathodus planus within the Zone of the same name. The pyrite framboids were formed within the ostracode carapaces after their death. The size distribution of pyrite framboids supports the former suggestion that large size (>6 μm in diameter) is not suitable for the reconstruction of seawater redox conditions.
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spelling doaj.art-d42e54b2e1a644918a8ad063457f74522022-12-22T01:15:11ZengFaculty of Mining and Geology, BelgradeGeološki Anali Balkanskoga Poluostrva0350-06082406-07472014-01-0120147511510.2298/GABP1475001S0350-06081475001SLower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)Sudar Milan N.0Chen Yanlong1Kolar-Jurkovšek Tea2Jurkovšek Bogdan3Jovanović Divna4Forel Marie-Beatrice5Faculty of Mining and Geology, Departement of Palaeontology, BelgradeUniversity of Graz, Nawi Graz, Institute of Earth Sciences, Graz, AustriaGeological Survey of Slovenia, Ljubljana, SloveniaGeological Survey of Slovenia, Ljubljana, SloveniaGeological Survey of Serbia, BelgradeChina University of Geosciences (Wuhan), Faculty of Earth Sciences, Lumo Road, Wuhan, Hubei Province, ChinaSystematic study of microfossil associations on the Krivi Potok section (Gučevo Mt. area, NW Serbia) has been carried out to document and to refine the Lower Triassic stratigraphic correlations within Alpine-Mediterranean domain. Field investigation and laboratory process have enabled the identification of lowermost Olenekian (lower Smithian) conodonts, ostracodes and pyrite framboids. Two conodont zones are established in this region, in ascending order they are: Pachycladina obliqua-Foliella gardenae Assemblage Zone and Neospathodus planus Zone. A new ostracode species Paracypris ? krivipotokensis FOREL n. sp. has been described, it co-occurs with conodont Neospathodus planus within the Zone of the same name. The pyrite framboids were formed within the ostracode carapaces after their death. The size distribution of pyrite framboids supports the former suggestion that large size (>6 μm in diameter) is not suitable for the reconstruction of seawater redox conditions.http://www.doiserbia.nb.rs/img/doi/0350-0608/2014/0350-06081475001S.pdfLower TriassicOlenekianconodontsostracodespyrite framboidsJadar BlockNorthwestern Serbia
spellingShingle Sudar Milan N.
Chen Yanlong
Kolar-Jurkovšek Tea
Jurkovšek Bogdan
Jovanović Divna
Forel Marie-Beatrice
Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
Geološki Anali Balkanskoga Poluostrva
Lower Triassic
Olenekian
conodonts
ostracodes
pyrite framboids
Jadar Block
Northwestern Serbia
title Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
title_full Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
title_fullStr Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
title_full_unstemmed Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
title_short Lower triassic (Olenekian) microfauna from Jadar block (Gučevo mt., Nw serbia)
title_sort lower triassic olenekian microfauna from jadar block gucevo mt nw serbia
topic Lower Triassic
Olenekian
conodonts
ostracodes
pyrite framboids
Jadar Block
Northwestern Serbia
url http://www.doiserbia.nb.rs/img/doi/0350-0608/2014/0350-06081475001S.pdf
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