Indikatori parcijalnog taljenja u metapelitnim stijenama Moslavačke gore

master's thesis

• Title (english): Indicators of partial melting in metapelites from Moslavačka Gora
• Author: Dario Schneller
• Mentor: Zorica Petrinec (mentor)
• Committee member: Zorica Petrinec (predsjednik povjerenstva)
• Committee member: Dražen Balen (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2023-02-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Kristalin Moslavačke gore predstavlja magmatsko-metamorfni kompleks kojeg čine granitoidne stijene, metamorfne stijene srednjeg stupnja metamorfizma te migmatitne stijene. Dosadašnja istraživanja kao migmatite dominantno opisuju različite varijetete migmatiziranih gnajseva. Cilj ovoga rada je potkrijepiti hipotezu da je pojava parcijalnog taljenja zabilježena i u metapelitima Moslavačke gore, na što ukazuju dosadašnja geotermobarometrijska istraživanja. U tu svrhu optičkim istraživanjima obuhvaćeno je pet uzoraka metapelita Moslavačke gore te je analizirana velika količina mikrostrukturnih indikatora parcijalnog taljenja. Glavne mikrostrukturne indikatore predstavljaju zrna peritektičkog i retrogradnog cordijerita koja su zaobljena u kontaktu sa „zašiljenim“ volumenima felsičnih minerala. Navedena kombinacija indikatora potvrđuje da je u metapelitnim stijenama bila prisutna taljevina, odnosno, da se u migmatizirane stijene Moslavačke gore, uz gnajseve, mogu ubrojiti i metapelitne stijene.

Abstract (english)

Moslavačka Gora crystalline represents a magmatic-metamorphic complex consisting of granitoid rocks, medium-grade metamorphic rocks, and migmatitic rocks. Previous research predominantly describes different varieties of migmatised gneisses as migmatites. The aim of this work is to support the hypothesis that the occurrence of partial melting was also recorded in the metapelites of Moslavačka Gora, as indicated by previous geothermobarometric research. For this purpose, five samples of metapelites from Moslavačka Gora were included in optical research, and a large number of microstructural indicators of partial melting were analyzed. The main microstructural indicators are peritectic and retrograde cordierite grains that were rounded in contact with pointed volumes of felsic minerals. The aforementioned combination of indicators confirms that melt was present in metapelitic rocks, i.e., that metapelitic rocks can be regarded as migmatites of Moslavačka Gora, along with gneisses.

• Keywords: parcijalno taljenje; Moslavačka gora; mikrostrukture; metapelitne stijene; cordijerit
• Keywords (english): partial melting; Moslavačka Gora; microstructures; metapelites; cordierite
• Language: croatian
• URN:NBN: urn:nbn:hr:217:335187
• 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: Embargoed access; Embargo expiration date: 2025-02-20
• Created on: 2023-06-21 09:11:35