Usporedba sedimenata i sedimentnih stijena iz Ledene jame i jame Nedam na Sjevernom Velebitu

master's thesis

• Title (english): Comparison of sediments and sedimentary rocks from Ledena jama and Nedam caves on the Northern Velebit
• Author: Maja Marinić
• Mentor: Darko Tibljaš (mentor)
• Mentor: Dalibor Paar (mentor)
• Committee member: Darko Tibljaš (predsjednik povjerenstva)
• Committee member: Dalibor Paar (član povjerenstva)
• Committee member: Maja Martinuš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2021-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Speleološki objekti nude pogled u geološke karakteristike koje mogu biti teško vidljive na površini. U ovom istraživanju odabrane su dvije jame Sjevernog Velebita za analizu i uspredbu stijena i sedimenata, Ledena jama i jama Nedam. U svrhu određivanja mineralnog sastava sedimenata korištena je metoda analize teške frakcije, te rendgenska difrakcija. Iz uzoraka sedimentnih stijena izrađeni su mikroskopski preparati u svrhu određivanja starosti i litološih karakteristika uzoraka. Rezultati analiza sedimenata pokazali su razliku u mineraloškom sastavu uzoraka, ovisno o njihovoj dubini. Rezultati određivanja starosti i litoloških karakteristika stijenskih uzoraka potvrdili su pretpostavljeni slijed naslaga, uz neočekivanu prisutnost sloja karbonatnih breča na većim dubinama.

Abstract (english)

Caves offer a view of geological features that may be difficult to see on the surface. In this study, two caves of the Northern Velebit were selected for the analysis and comparison of rocks and sediments, the Ledena jama and the Nedam cave. To determine the mineral composition of sediments, the method of heavy fraction analysis and X-ray diffraction were used. Thin sections were made from sedimentary rock samples in order to determine the age and lithological characteristics of the samples. The results of sediment analyses showed a difference in the mineralogical composition of the samples, depending on their depth. The results of determining the age and lithological characteristics of the rock samples confirmed the assumed sequence of deposits, with the unexpected presence of a layer of carbonate breccias at greater depths.

• Keywords: Sjeverni Velebit; speleološki objekti; minerali glina; teška mineralna frakcija; stratigrafija
• Keywords (english): Northern Velebit; speleological objects; clay minerals; heavy mineral fraction; stratigraphy
• Language: croatian
• URN:NBN: urn:nbn:hr:217:182720
• Study programme: Title: Graduate university study of Geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-05-02 11:53:54