Mineraloške značajke miocenskih tufova iz bazena Hrvatskog zagorja

master's thesis

• Title (english): Mineralogical characteristics of miocene tuffs from Hrvatsko Zagorje basin
• Author: Klara Razum
• Mentor: Marijan Kovačić (mentor)
• Mentor: Frane Marković (komentor)
• Committee member: Marijan Kovačić (predsjednik povjerenstva)
• Committee member: Frane Marković (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2022-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

U diplomskom radu analizirano je pet uzoraka tufova s tri lokaliteta unutar bazena Hrvatskog Zagorja; Bednja, Gornja Voća i Vrbno. Cilj rada bio je utvrditi njihove mineraloške značajke i usporediti ih s tufovima iz okolice. Provedene su metode kalcimetrije, granulometrije, modalna analiza, petrografska analiza te analiza rendgenske difrakcije. U svim tufovima utvrđeno je da sadrže terigenu komponentu te su u njima minerali podijeljeni u tri glavne grupe po porijeklu – primarni (vulkanski) minerali, autigeni i detritični. U zajednici teških minerala prevladavaju granati, a u lakoj mineralnoj frakciji najzastupljenije je devitrificirano vulkansko staklo. U lakoj frakciji pronađene su dijatomeje, spikule spužvi i bodlje ježinca. Tufovi iz Gornje Voće, Vrbnog i jedan tuf iz Bednje klasificirani su kao vitroklastični, dok je jedan tuf iz Bednje klasificiran kao kristaloklastičan. Granulometrijskom analizom utvrđeno je da je primarna tefra bila pelitna.

Abstract (english)

In this diploma thesis, five samples of tuffs from three localities – Bednja, Gornja Voća and Vrbno within the basin of Hrvatsko Zagorje were analyzed. The aim of the study was to determine their mineralogical characteristics and compare them with tuffs from the surrounding area. Methods of calcimetry, granulometry, modal analysis, petrographic analysis and X-ray diffraction analysis were performed. All tuffs were found to contain a terrigenous component, and minerals were divided into three main groups by origin – primary (volcanic) minerals, autigenic and detrital. In heavy minerals assemblage, garnets predominate, and of the light minerals, devitrified volcanic glass. In light fraction, diatoms, spicules and echinoid spines were found. Tuffs from Gornja Voća, Vrbno and one tuff from Bednja are classified as vitroclastic, while one tuff from Bednja is classified as crystaloclastic. Granulometric analysis point that the primary tephra was pelitic.

• Keywords: miocen; Panonski bazen; bazen Hrvatskog zagorja; tufovi
• Keywords (english): miocene; Pannonian Basin; Hrvatsko Zagorje basin; tuffs
• Language: croatian
• URN:NBN: urn:nbn:hr:217:563351
• 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; Embargo expiration date: 2023-08-22
• Created on: 2022-07-06 10:30:14