Geokemijska varijabilnost sastava granata iz metamorfnih kompleksa Papuka

master's thesis

• Title (english): Geochemical variability of garnets from metamorphic complexes of Papuk
• Author: Nataša Mravunac
• Mentor: Dražen Balen (mentor)
• Committee member: Dražen Balen (predsjednik povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Committee member: Blanka Cvetko Tešović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2018-09-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Istraţivano podruĉje obuhvaća lokalitete Papuĉkog (Puklica, Koturić) i Psunjskog metamorfnog kompleksa Papuka (Vetovo, Kutjevaĉka rijeka, Gradište, Seona). Prouĉavane su metapelitne stijene koje sadrţe kompleksno zonirane granate. Kemijske znaĉajke granata analizirane su na temelju dobivenih rendgenskih kemijskih mapa uz definiranje mineralnih parageneza optiĉkim metodama. Granati Papuĉkog kompleksa pokazuju postupnu homogenizaciju sastava od JI prema SZ kompleksa sukladno porastu temperature. Kod Psunjskog kompleksa kutjevaĉki granati pokazuju inverznu zonalnost u odnosu na krndijske što upućuje na vremenski razliĉite metamorfne dogaĊaje. Kemijske mape i teksturne karakteristike granata Vetova ukazuju na retrogradne procese i duţu povijest rasta. Ovakva geokemijska varijabilnost negira postojanje genetski jedinstvenog kompleksa već ukazuje na postojanje dva (ili više) metamorfna kompleksa.

Abstract (english)

The examined area consist of localities which belong to the Papuk´s (Puklica, Koturić) and Psunj´s metamorphic complex of Papuk (Vetovo, Kutjevaĉka rijeka, Gradište and Seona). The rocks of interest are metapelites with complex zoned garnets. Chemical characteristics of garnets are based on X-ray chemical maps analysis with defining of mineral paragenesis by optical methods. Garnets of Papuk´s complex suggest homogenization of the composition from SE to the NW in accordance with the increase in temperature. Garnets from Kutjevo show inverse compositional maps in regards to Krndija´s garnets, which reflects time-separated metamorphic events. Chemical maps and texture characteristics of garnets from Vetovo orthogneiss point to retrograde processes and a long history of growth. According to this features of garnets, these complexes are not uniform, rather represent two (or more) metamorphic complexes.

• Keywords: granati; zonalnost; Papuk; rendgenske kemijske mape; metamorfizam
• Keywords (english): garnet; zonality; Papuk; X- ray chemical maps; metamorphism
• Language: croatian
• URN:NBN: urn:nbn:hr:217:499188
• Study programme: Title: Graduate university study of Environmental 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: 2020-10-02
• Created on: 2018-12-19 11:16:53