Naslov
Paleoenvironmental evolution of southern Pannonian Basin during Badenian transgression

Autori
Pezelj, Đurđica, Mandić, Oleg

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Knjiga sažetaka / Abstracts Book / Horvat, Marija - Zagreb : Hrvatski geološki institut, 2010, 101-102

ISBN
978-953-6907-23-6

Skup
4. Hrvatski geološki kongres s međunarodnim sudjelovanjem

Mjesto i datum
Šibenik, Hrvatska, 14.10.2010. - 15.10.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
paleoecology; foraminifera; marine transgression; Badenian; Pannonian Basin; Bosnia and Herzegovina

Sažetak
Benthic foraminifera record with 84 detected species shows distinct changes in composition and diversity across the section, reflecting changes of the paleoenvironment., i.e.depositional depth, oxygen content and organic matter content. Within the first meter of the marine part of the section shallow water assemblage predominates, reflecting highly oxic environmental conditions. The most common are Asterigerinata planorbis, Elphidium rugosum, Lobatula lobatula and Ammonia viennensis. Gradually, deep water middle to outer shelf assemblage installs, showing a stable moderately oxic bottom environment. The characteristic representatives are Valvulineria complanata, Cassisidulna laevigata, Heterolepa dutemplei together with Bulimina elongata. Slightly preceding the first dark clay intercalation the environmental perturbation starts pointed out by repetitive change of diversity index, species dominance and bottom water oxygen content. Some sea level fluctuation is present with distinct shallowing peak directly above the thick carbonate body. Within following meter distance the most distinct change develops with installation of low oxic near-bottom conditions remaining stable until the section top. The benthic fauna of that latter interval is characterized by low diversity and high dominance fauna comprising oxygen depletion indicators such as Praeglobobulimina pyrula or Bolivina ssp. The benthic foraminifera assemblage allows a good correlation of the marine deposits with the Badenian regional stage.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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