Reefs and bioaccumulations in the Miocene deposits of the North Croatian Basin – Amazing diversity yet to be described

Authors

  • Jasenka Sremac University of Zagreb, Faculty of Science, Department of Geology
  • Marija Bošnjak Makovec Croatian Natural History Museum
  • Davor Vrsaljko Croatian Natural History Museum
  • Bojan Karaica
  • Kristina Tripalo
  • Karmen Fio Firi University of Zagreb, Faculty of Science, Department of Geology
  • Ana Majstorović Bušić INA-Industry of Oil Plc.
  • Tihomir Marjanac University of Zagreb, Faculty of Science, Department of Geology

DOI:

https://doi.org/10.17794/rgn.2016.1.2

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.

 

Author Biography

Jasenka Sremac, University of Zagreb, Faculty of Science, Department of Geology

Associate Professor

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Published

2015-12-20

How to Cite

Sremac, J., Bošnjak Makovec, M., Vrsaljko, D., Karaica, B., Tripalo, K., Fio Firi, K., Majstorović Bušić, A., & Marjanac, T. (2015). Reefs and bioaccumulations in the Miocene deposits of the North Croatian Basin – Amazing diversity yet to be described. Rudarsko-geološko-Naftni Zbornik, 31(1), 19–29. https://doi.org/10.17794/rgn.2016.1.2

Issue

Section

Geology

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