Koraljno-rudistni facijesi kampanskih transgresivnih sedimenata sjeveroistočne Slovenije, sjeverne Hrvatske i sjeverozapadne Bosne

undergraduate thesis

• Title (english): Coral-rudist facies of campanian transgressive deposits from northeastern Slovenia, northern Croatia and northwestwern Bosnia
• Author: Vatroslav Veble
• Mentor: Alan Moro (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2016, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Na šest lokaliteta u sjevernoj Hrvatskoj (Donje Orešje, Gornje Orešje), Sloveniji (Stranice, Slovenj Gradec) i Bosni (Bešpelj i Kober) tektonski uzdignuti i erodirani paleoreljef transgresivno su prekrile sukcesije plitkovodnih kampanskih naslaga. Te naslage predstavljaju različite lateralne dijelove transgresivnog okoliša plitkog mora gdje se mogu naći rudisti i koralji kao tipični makrofosili. Na proučavanim lokalitetima nađena su dva tipa sukcesije: (a) klastična i (b) karbonatna. Većina lokaliteta je unutar povećanog kronostratigrafskog raspona Calveziconusa cf. lecalvezae (80.5-79.03), koji se sastoji od gornjeg dijela zone Vaccinites alpinusa (lokaliteti Stranice i Slovenj Gradec) i početka zone Pironaea polystyla (lokaliteti Bešpelj i Kober). U klastičnim sukcesijama je najbogatije nalazište makrofosila koralja dok fosili rudista prevladavaju u karbonatnim nalazištima. Način sedimentiranja naslaga na lokalitetima nastao je pod utjecajem brzog porasta razine mora i pod utjecajem tektonike te stvorio više vrsta paleoreljefa. Na mjestima gdje je paleoreljef blagog nagiba, transgresivna sukcesija započinje sa klastičnim sedimentima bogatim koraljima ili karbonatima sa radiolitidima. U područjima strmijeg paleoreljefa karbonatne naslage sadrže zajednicu radiolitida i hipuritida, a rudisti kao prevladavajući makrofosili ukazuju na veću količinu taloženja nego u klastičnim područjima.

Abstract (english)

At six localities in northern Croatia (Donje Orešje, Gornje Orešje), Slovenia (Stranice, Slovenj Gradec), and Bosnia (Bešpelj and Kober), successions of shallow-water Campanian deposits transgressively covered a tectonically uplifted and eroded paleorelief. They constitute different lateral parts of a transgressive subtidal environment, where rudists and corals are typical macrofossils. At the investigated localities, two types of succession were distinguished: (a) clastic and (b) carbonate. Most localities are within the extended chronostratigraphic range of Calveziconus cf. lecalvezae (80.5-79.03 Ma), which comprises the upper part of the Vaccinites alpinus interval zone (for Stranice and Slovenj Gradec localities) and beginning of the Pironaea polystyla interval zone (for Bešpelj and Kober localities). In clastic successions, corals are the most abundant macrofossils, whereas rudists predominate within carbonate sections. The depositional setting of the investigated localities results from rapid relative sea-level rise with a tectonic overprint, which covered different types of paleorelief. In cases when the paleorelief is gentle, a transgressive succession starts with clastic coral-rich sediments or carbonates with radiolitids. In areas of steeper paleorelief carbonate sediments were deposited with a mixed radiolitid-hippuritid community, and the rudists, at the major macrofossils, indicate higher sedimentation rates in comparison with the clastic situations).

• Keywords: kampanske naslage; karbonatna nalazišta
• Keywords (english): Campanian deposits; carbonate sections
• Language: croatian
• URN:NBN: urn:nbn:hr:217:030708
• Study programme: Title: Environmental Sciences; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-01-10 08:36:00