Karakteristike litofacijesa miocenskih naslaga u okolici Voćina

master's thesis

• Title: Karakteristike litofacijesa miocenskih naslaga u okolici Voćina : diplomski rad
• Title (english): Lithofacies characteristics of Miocene deposits in the vicinity of Voćin : master's thesis
• Author: Petar Maruna
• Mentor: Duje Smirčić (mentor)
• Committee member: Duje Smirčić (predsjednik povjerenstva)
• Committee member: Marko Cvetković (član povjerenstva)
• Committee member: Uroš Barudžija (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Terenskim istraživanjem detaljno je istraženo područje neposredne okolice Voćina, prilikom kojeg su snimljeni sedimentološki sljedovi i prikupljeni uzorci stijena u sklopu istraživanja na znanstvenom projektu financiranom od strane Hrvatske zaklade za znanost – GEODEP (UIP2019-04-3846). Snimljena su četiri sedimentološka slijeda miocenskih naslaga (VOC-A, VOC-C, VOC-D i VOC-E). Mikropetrografski je analizirano 47 preparata i pritom je određeno četiri litofacijesa – biokalkruditi, biokalkareniti, lapori i vapnenci. Unutar litofacijesa lapora prepoznato je pet različitih litotipova – homogeni lapor, laminirani lapor, siltozni lapor, pjeskoviti lapor i silicificirani lapor. Opisane su genetske karakteristike litofacijesa te se može zaključiti kako biokalkruditi i biokalkareniti nastaju trošenjem i erozijom postojećih, uglavnom vapnenačkih stijena, s manjim udjelom siliciklastične komponente. Novonastali klasti povremeno su doneseni gravitacijskim tokovima u dubljevodni okoliš. Tome svjedoče teksture kose i horizontalne laminacije u biokalkarenitu, kao i karakteristike detritnog toka u biokalkruditu. U dubljevodnom okolišu se u vrijeme izostanka gravitacijskih tokova iz suspenzije talože lapori u čijem sastavu se nalaze planktonski organizmi i maleni udio siltozne/pjeskovite komponente. Litofacijes vapnenaca obilježen je pojavama tankih mikritnih slojeva koji su nastali precipitacijom karbonatnih čestica u mirnom i dubljem marinskom okolišu uz izostanak kopnenog donosa materijala.

Abstract (english)

Field research was carried out in the vicinity of Voćin. Sedimentological sections were recorded and rock samples were collected while conducting research for a project financed by Croatian Scientific Foundation GEODEP (UIP2019-04-3846). Four sedimentological sections (VOC-A, VOC-C, VOC-D and VOC-E) in miocene deposits were sampled. A total of 47 thin sections were obtained and micorpetrographically analyzed. Four lithofacies were determined - biocalcrudites, biocalcarenites, marls and limestones. Marl lithofacies is differentiated into five lithotypes – homogenous marl, laminated marl, silty marl, sandy marl and silicified marl. Genetical chararactersistics were disscussed and described, leading to the conclusion that biocalcrudites and biocalcarenites are formed due to weathering and erosion of dominantly carbonate rocks, with minor siliciclastic components. Newly formed clasts are episodically transported via gravity currents to deeper marine areas. Cross and horizontal lamination in biocalcarenites support this interpretation, as well as the debris flow characteristics of the biocalcrudite. During the periods of erosional standstill, marls were deposited in the deeper marine areas with minor content of silty/sandy grains and abundant plankton organisms. Limestone lithofacies is characterized by thin micrite beds formed by precipitation of carbonate particles in a calm and deeper environment with the absence of continental input.

• Keywords: miocen; Voćin; biokalkrudit; biokalkarenit; lapor; litofacijes
• Keywords (english): Miocene; Voćin; biocalcrudite; biocalcarenite; marl; lithofacies
• Language: croatian
• URN:NBN: urn:nbn:hr:169:162409
• Project: Number: UIP-2019-04-3846; Title: GEOloška karakterizacija podzemlja istočnog dijela Dravske depresije s ciljem procjene Energetskog Potencijala; Title: GEOlogical characterization of the Eastern part of the Drava depression subsurface intended for the evaluation of Energy Potentials; Acronym: GEODEP; Leader: Marko Cvetković; Jurisdiction: Croatia; Funder: Hrvatska zaklada za znanost; Funding stream: Installation Research Projects
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Hydrogeology and engineering geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-16 07:51:42