Porijeklo i granulometrija valutica u morenskim naslagama šljunčare u Raduču

master's thesis

• Title (english): Provenance and granulometry of pebbles of moraines of Raduč gravel pit
• Author: Valentina Šunjerga
• Mentor: Jasenka Sremac (mentor)
• Mentor: Tihomir Marjanac (mentor)
• Committee member: Jasenka Sremac (predsjednik povjerenstva)
• Committee member: Tihomir Marjanac (član povjerenstva)
• Committee member: Dražen Kurtanjek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2015-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Mineralogy and Petrology

Abstract

Ovaj rad opisuje porijeklo i granulometriju valutica u morenskim naslagama šljunčare u mjestu Raduč, koji se nalazi na ličkim padinama Velebita. U toj šljunčari eksploatira se morenski materijal u kojem možemo naći valutice različitih veličina i litologije. Cilj istraživanja bio je odrediti porijeklo valutica, smjer i način njihovog transporta. Osobno sam otišla na teren gdje sam prikupila 60 morfološki različitih valutica te 3293,5 g rastesitog uzorka. Od 60 prikupljenih valutica odabrane su 34 za izradu izbrusaka od kojih je 28 naposljetku i izrađeno, dok je na 10 preparata primjenjena metoda bojanja preparata. Na rastresitom uzorku primjenjena je metoda sijanja te granulometrijske analize. Naposljetku se na temelju rezultata može zaključiti da se radi o glacijalnom materijalu i to zbog velike litološke razlike valutica na tako uskom području te zbog njihove izrazito loše sortiranosti i strija nađenih na uzorcima. Usporedbom s Osnovnom geološkom kartom, list Udbina, zaključujem da je donos mogao biti i sa sjeveroistočne i s jugozapadne stane. Najvjerojatnije se radi o dva ledenjaka koja su se kretala s dvije strane te se na kraju spojila. Nakon povlačenja ledenjaka, odnosno njegovog otapanja zaostala je morena koju danas nalazimo na području mjesta Raduč.

Abstract (english)

This paper describes origin and granulometry of pebbles in moraine deposites in Raduč, which is located on slopes of Velebit Mt. in Lika. Moraine material, in which we can find pebbles of different sizes and lithology, is exploated in Raduč (Lika region). The object of this research was to define the origin of pebbles, their transport route and mode of transportation. I went to Raduč where I collected 60 morphologically different pebbles and 3293,5 g. of loose material sample. From 60 pebbles I picked 34 for the preparation of thin section and finally created 28 thin section. 10 samples were stained. Loose sample was seaved and granulometry analysis was performed. Based on the results of this research I concluded that sediment is of glacial origin. It is characterized with prominent lithological differences in the narrow area and poor by sorted samples. Compared to the Basic Geological Map (sheet Udbina) I concluded that transport could be from two direction: north-east or south-west. Probably there were two glaciers which travelled from different sides and join each other in the valley. After the retreat of glacier moraine covered the valley of Raduč.

• Keywords: morena; stratigrafija; granulometrija; ledenjak; transport valutica; Raduč
• Keywords (english): moraine; stratigraphic analyses; granulometry; glacier; pebble transport; Raduč
• Language: croatian
• URN:NBN: urn:nbn:hr:217:810062
• 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: 2017-02-09 12:36:14