Naslov
Seasonal Miocene precipitation pattern recognized in marginal marine deposits of Mt. Medvednica (Croatia)

Autori
Sremac, Jasenka ; Šeparović , Antonia ; Bošnjak, Marija ; Jarić, Anja ; Kampić, Štefica

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

Izvornik
Book of Abstracts, 35th Meeting of Sedimentology, / Bábek, Ondřej ; Vodrážková, Stanislava - Prag : Palacký University of Olomouc, 2021, 416-416

ISBN
978-80-244-5929-5

Skup
34th International Meeting of Sedimentology

Mjesto i datum
Online, 21.06.2021. - 25.06.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
climate seasonality, Miocene, Medvednica

Sažetak
Depositional sequence exposed near the Veternica cave (Mt. Medvednica, vicinity of Zagreb) bears evidence of temporary freshwater input to the marginal Miocene marine environment of the Central Paratethys. Succession, ca. 5 m thick, comprises nine horizons characterized by interchange of highly fossiliferous layers with dominantly stenohaline biota (mostly foraminifera, ostracods, bryozoans, neritic and pelagic fishes) and those with less diverse euryhaline taxa (e.g. foraminifera Elphidium, small oyster Pycnodonte, gobiid fishes). Abundant gadilid scaphopods and serpulid Ditrupa occur in all horizons. Life flourished in a shallow inner shelf environment, rich in nutrients derived from the river flows. Periods of intensive flooding can be additionally recognized from the decrease of total carbonate content, e.g. from layer 2 with 62.18% to layer 5 with 53.7 %. Amount of carbonates reaches 74.83% in the uppermost layer 9, pointing to the possible drought or diminished erosion of the hinterland. Although the pelagic taxa in the studied samples are scarce and not stratigraphically indicative, benthic fauna (foraminifera, ostracods) point to the Langhian (Middle Badenian) Spirorutilus carinatus Zone.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA