Original scientific paper
https://doi.org/10.17794/rgn.2016.1.2
REEFS AND BIOACCUMULATIONS IN THE MIOCENE DEPOSITS OF THE NORTH CROATIAN BASIN – AMAZING DIVERSITY YET TO BE DESCRIBED
Jasenka Sremac
orcid.org/0000-0002-4736-7497
; University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102a, HR-10000 Zagreb
Marija Bošnjak Makovec
; Croatian Natural History Museum, Demetrova 1, HR-10000 Zagreb
Davor Vrsaljko
; Croatian Natural History Museum, Demetrova 1, HR-10000 Zagreb
Bojan Karaica
; Hanamanova 1c, HR-10000 Zagreb
Kristina Tripalo
; Šestinski vrh 43a, HR-10000 Zagreb
Karmen Fio Firi
; University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102a, HR-10000 Zagreb
Ana Majstorović Bušić
; INA-Industry of Oil Plc., Šubićeva 29, HR-10000 Zagreb
Tihomir Marjanac
; University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102a, HR-10000 Zagreb
Abstract
During the early stages of the Middle Miocene transgression marine biota invaded the newly formed Paratethys Sea. Reefs and reef-like structures particularly flourished with life, supported by the favourable climate conditions. Miocene biogene buildups show a variety of fossil assemblages and lithologic features. The main reef-builders were bryozoans, coralline algae, corals, oysters, vermetids, sponges and serpulids. Water turbidity and depth were major ecological factors controlling the reef biota. Lithofacies types at the studied localities in Northern Croatia show significant similarity with the Upper Langhian (Middle Badenian) of the Leitha Mountains in Austria, but can also be well compared with Miocene to recent reef structures in the Mediterranean. The Miocene reef-like buildups exhibit different porosity rates and other lithological characteristics.
Keywords
Biogene buildups; Badenian; Central Paratethys; Croatia
Hrčak ID:
152784
URI
Publication date:
9.2.2016.
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