Mineral chemistry of the magmatic rocks and evaporites within the Dinaric evaporite melange (Kosovo, Sinjsko and Vrličko polje)

master's thesis

• Title: Mineral chemistry of the magmatic rocks and evaporites within the Dinaric evaporite melange (Kosovo, Sinjsko and Vrličko polje) : master's thesis
• Title (croatian): Mineralna kemija magmatskih stijena i evaporita unutar evaporitnog melangea u Dinaridima (Kosovo, Sinjsko i Vrličko polje) : diplomski rad
• Author: Alan Bačić
• Mentor: Sibila Borojević Šoštarić (mentor)
• Committee member: Sibila Borojević Šoštarić
• Committee member: Vesnica Garašić
• Committee member: Igor Vlahović
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2013-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Abstract: Dinaric evaporite melange is composed of sabkha type evaporite, carbonate and clastic rocks and spilitized basaltic rocks. The focus of this thesis are magmatic rocks of the Kosovo, Sinjsko and Vrličko karst field and surrounding evaporite rocks. The main aims of this investigation are: 1) petrographic analysis of magmatic and evaporite rocks, 3) determination of mineral chemistry in magmatic and evaporite rocks using electron microprobe (EMP) analysis 3) estimation of P-T conditions during the formation of magmatic rocks. Based on primary mineral assemblage, magmatic rocks are classified as amphibole-bearing gabbro according to IUGS classification. The rocks show variety of grain sizes, thus are divided into fine grained, medium grained and coarse grained rocks. Evaporite rocks are according to petrographic analysis divided into massive anhydrite, nematoblastic anhydrite, porphyroblastic gypsum, granoblastic gypsum and breccia facies. Minerals of five magmatic rocks were analysed using EMP and chemistry of plagioclase, amphibole, chlorite, Fe-oxide, prehnite, clinozoisite and ilmenite was carefully determinated. Plagioclase, amphibole and chlorite minerals were classified according to amount of certain elements (feldspar Na, Ca, K; amphibole Si, Al, Ti, Mg, Fe; chlorite Mg, Al, Fe). Temperature and pressure of formation for amphibole grain were calculated on the basis of amphibole and plagioclase chemistry. According to this, P-T conditions for primary and secondary amphiboles are determined. Temperature of chlorite formation is estimated too.

Abstract (croatian)

Evaporitni melange u Dinaridima se sastoji od sabkha tipa evaporita, karbonata, klastita i spilitiziranih bazaltnih stijena. Fokus ovog rada je na magmatskim stijenama Kosovog, Sinjskog i Vrličkog polja i okolnih evaporitnih stijena. Glavni ciljevi ovog istraživanja su: 1) petrografska analiza magmatskih i evaporitnih stijena, 2) kemijska analiza minerala u magmatskim i evaporitnim stijenama koristeći elektronsku mikrosondu (EMS), 5) određivanje P-T uvjeta formiranja magmatskih stijena. Na temelju primarnog mineralnog sastava magmatske stijene su klasificirane kao amfibolski gabro, prema IUGS klasifikaciji. Stijene pokazuju različite veličine zrna, zbog čega su podijeljene na sitnozrnate, srednjezrnate i krupnozrnate stijene. Evaporitne stijene su na temelju petrografske analize podijeljene na: masivni anhidrit, nematoblastični anhidrit, porfiroblastični gips, granoblastični gips i breccia facijes. Minerali pet uzoraka magmatskih stijena su analizirani koristeći EMS i kemijska analiza plagioklasa, amfibola, klorita, Fe-oksida, prehnita, klinocoisita i ilmenita pažljivo napravljena. Plagioklasi, amfiboli i kloriti su klasificirani na temelju količine pojedinih elemenata (plagioklasi Na, Ca, K; amfiboli Si, Al, Ti, Mg, Fe; kloriti Mg, Al, Fe). Temperatura i tlak formiranja pojedinog zrna amfibola izračunati su bazi kemijske analize amfibola i plagioklasa. Shodno s tim su određeni i P-T uvjeti formiranja za primarne i sekundarne amphibole. Uz to su određene i temperature formiranja klorita.

• Keywords: evaporite mélange; magmatic rocks; electron microprobe; Kosovo polje; Sinjsko polje; Vrličko polje; gabbro; evaporites
• Keywords (croatian): evaporitni melange; magmatske stijene; elektronska mikrosonda; Kosovo polje; Sinjsko polje; Vrličko polje; gabro; evaporiti
• Language: english
• URN:NBN: urn:nbn:hr:169:262140
• Study programme: Title: 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: Access restricted to students and staff of home institution
• Created on: 2016-01-22 09:58:36