Mineraloške i geokemijske značajke tufova s lokaliteta Bukova glava, Krndija

master's thesis

• Title (english): MINERALOGICAL AND GEOCHEMICAL CHARACTERISTICS OF THE TUFFS FROM BUKOVA GLAVA LOCALITY, MT KRNDIJA
• Author: Patricija Keča
• Mentor: Frane Marković (mentor)
• Mentor: Marijan Kovačić (komentor)
• Committee member: Frane Marković (predsjednik povjerenstva)
• Committee member: Marijan Kovačić (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2022-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

U diplomskom radu analizirano je pet uzorka tufa s lokaliteta Bukova glava na Krndiji. Na svim je uzorcima napravljena XRD analiza (analiza rendgenske difrakcije) cjelokupnih uzoraka, te sitne frakcije (manje od dva mikrometra), također je na svim uzorcima napravljena kalcimetrija i cijelostijenska kemijska analiza. Uzorcima BGM5 3/1 i BGM5 31/1 je dodatno analiziran granulometrijski i modalni sastav. Tufovi sadrže značajnu količinu vulkanskog stakla, koje je izmjenjeno u minerale glina, smektite. Rezultati Greene-Kelly testova pokazali su da su tri uzorka beidelliti (BGM5 3/1, BGM5 34/1 i BGM5 77/1), a druga dva montmorilloniti (BGM5 31/1 i BGM5 55/1). Svojstva bubrenja kalijevim kationima zasićenih uzoraka pokazala su da su naboji slojeva analiziranih smektita srednjeg do niskog stupnja. Prema rezultatima mineraloških i geokemijskih istraživanja te usporedbom s prethodnim istraživanjima tufova ovog područja je pretpostavljeno da su analizirani uzorci sarmatske starosti te su taloženi u marinskom okolišu. Kao izvor vulkanizma je pretpostavljen aktivni kontinentalni rub u Istočnim Karpatima.

Abstract (english)

In this paper five tuff samples were analysed from Bukova glava locality on Mt. Krndija. All samples were investigated using XRPD (X-ray powder diffraction) analysis, chemical analyses (major and trace elements) and calcimetry. On samples BGM5 3/1 and BGM5 31/1 granulometric analysis and modal composition analysis have been carried out. Tuffs contain significant amount of volcanic glass, which was altered to clay minerals, smectites. Results of Greene-Kelly tests showed that three samples contain beidellite (BGM5 3/1, BGM5 34/1 and BGM5 77/1), and the other two montmorillonite (BGM5 31/1 and BGM5 55/1). Properties of K-saturated samples showed that smectites are medium to low-charged. The results of mineralogical and geochemical analyses have shown that tuffs are most likely Sarmatian in age and they have been deposited in marine environment. The active continental margin in the Eastern Carpathians has been assumed as a source of volcanism.

• Keywords: tuf; Panonski bazen; Sjevernohrvatski bazen; Bukova glava; smektiti
• Keywords (english): North Croatian Basin; Pannonian basin; tuff; Bukova glava; smectites
• Language: croatian
• URN:NBN: urn:nbn:hr:217:641082
• 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
• Created on: 2022-10-19 07:19:49