PETROLOŠKE KARAKTERISTIKE EOCENSKIH KONGLOMERATA ZRINSKE GORE

master's thesis

• Title (english): PETROLOGY OF EOCENE CONGLOMERATES FROM ZRINSKA GORA
• Author: Matej Plavac
• Mentor: Borna Lužar-Oberiter (mentor)
• Mentor: Zorica Petrinec (komentor)
• Committee member: Borna Lužar-Oberiter (predsjednik povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Committee member: Marijan Kovačić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2024-02-21, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract

U svrhu određivanja petroloških karakteristika eocenskih sedimentnih naslaga Zrinske gore u blizini zaseoka Lovča snimljen je sedimentološki stup i prikupljeni su uzorci reprezentativnih valutica konglomerata i pješčenjaka. Uzorci su proučavani metodom optičke mikroskopije u prolaznom svjetlu. Na temelju mineraloških i strukturnoteksturnih karakteristika prikupljene valutice podijeljene su u 12 litotipova različitih magmatskih intruzivnih i efuzivnih, vulkanoklastičnih, kataklastičnih i metamorfnih stijena. Pješčenjaci su određeni kao litoareniti filosilikatnog i hematitnog veziva s litoklastima stijena koje se pojavljuju i u valuticama. U kontekstu razvoja paleocenskoeocenskog taložnog bazena duž Savske zone razmotrena je provenijencija valutica konglomerata i njihova sličnost s eocenskim konglomeratima drugih područja. Valutice granofira te sijenita i monzonita ukazuju na podrijetlo iz Savske zone, valutice efuziva i vulkanoklastita ostavljaju mogućnost miješanog podrijetla iz više mezozojskih kompleksa, a valutice metamorfnih stijena odgovaraju predeocenskim stijenama srednjeg i visokog stupnja regionalnog metamorfizma iz šire okolice Zrinske gore.

Abstract (english)

To ascertain the petrological characteristics of the Eocene sedimentary deposits of Zrinska Gora, near the village of Lovča, a sedimentological column was recorded, and representative samples of conglomerate pebbles and sandstones were collected. The samples were examined using the method of optical microscopy of transmitted light. The collected pebbles were classified into 12 lithotypes of various magmatic, volcaniclastic, cataclastic, and metamorphic rocks, based on mineralogical and structural-textural characteristics. The sandstones were determined as lithoarenites with phyllosilicate and hematite binding, containing rock fragments from lithologies present in the pebbles. Regarding the development of the Paleocene-Eocene sedimentary basin along the Sava zone, discussions revolved around the provenance and similarities of conglomerate pebbles to those found in Eocene conglomerates from adjacent areas. Specifically, pebbles of granophyre, syenite and monzonite suggest a Sava zone origin, while those composed of volcanic rocks could be of a mixed origin from various Mesozoic complexes. Additionally, pebbles of metamorphic rocks align with pre-Eocene formations showing medium to high degrees of regional metamorphism across the broader area.

• Keywords: konglomerat; Zrinska gora; eocen; Savska zona; provenijencija sedimenta
• Keywords (english): conglomerate; Zrinska Gora; Eocene; Sava zone; sediment provenance
• Language: croatian
• URN:NBN: urn:nbn:hr:217:447700
• Study programme: Title: Geology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni magistar/magistra geologije (sveučilišni magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-30 14:19:53