Geološki odnosi šireg područja potoka Vrapčak i Mikulić na jugozapadnim obroncima Medvednice

master's thesis

• Title (english): Geological relations of the wider area of the Vrapčak and Mikulić streams on the southwestern slopes of Medvednica Mt.
• Author: Stanko Bilaver
• Mentor: Damir Bucković (mentor)
• Committee member: Damir Bucković (predsjednik povjerenstva)
• Committee member: Dražen Kurtanjek (član povjerenstva)
• Committee member: Đurđica Pezelj (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2021-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Područje istraživanja obuhvaća šire područje račvanja potoka Vrapčak i potoka Mikulić, sjeverno od naselja Gornje Vrapče. Na promatranom području izdanjuju stijene paleozoika, gornjeg trijasa, gornje krede i miocena. Paleozojske stijene su predstavljene metamorfitima, pretpostavljene starosti devon-karbon. Izgrađuju sjeverni i istočni dio istraživanog područja, a razlikuju se parametamorfiti i ortometamorfiti. Odnosi metamorfita su isti kao i na širem područje Medvednice, odnosno parametamorfiti okružuju glavnu masu ortometamorfita. Naslage gornjeg trijasa, smještene su na jugozapadnom dijelu istraživanog područja, predstavljene su ranodijagenetskim dolomitima. Na središnjem dijelu istraživanog područja izdanjuju gornjokredne naslage. Unutar njih su određena četiri facijesa: bazni konglomerati, pelagički "scaglia vapnenci", flišolika serija najmlađe krede (Gozavske naslage) i turbiditni sedimenti. Južni dio istraženog terena obilježen je miocenskim naslagama. Unutar njih, badenske naslage predstavljene su baznim dolomitnim brečama na koje naliježu litotamnijski vapnenci a na njima slijede spongitni kalksiltiti i badenski pješčenjaci. Prijelaz u sarmat označen je početkom taloženja brakičnih naslaga, odnosno IV koso koritno uslojenih biokalkarenita na koje naliježu prijelazni koso laminirani onkoidni vapnenci. Najmlađe naslage istraživanog područja su donjopanonski ravno uslojeni glinoviti vapnenci poznatiji kao ''croatica naslage''.

Abstract (english)

The research area includes the wider area of the fork of the Vrapčak stream and the Mikulić stream, north of the settlement of Gornje Vrapče. In the observed area, rocks of the Paleozoic, Upper Triassic, Upper Cretaceous and Miocene appear. Paleozoic rocks are represented by metamorphites, presumed to be Devonian-Carboniferous. They build the northern and eastern part of the investigated area, and parametamorphites and orthometamorphites are distinguished. The ratios of metamorphites are the same as in the wider area of Medvednica, ie parametamorphites surround the main mass of orthometamorphites. Upper Triassic deposits, located in the southwestern part of the study area, are represented by early diagenetic dolomites. Upper Cretaceous deposits are emitted in the central part of the study area. Within them, four facies have been identified: base conglomerates, pelagic "scaglia limestones", a flysch series of the youngest Cretaceous (Gozavske deposits) and turbidite sediments. The southern part of the investigated terrain is marked by Miocene deposits. Within them, the Baden deposits are represented by basic dolomite breccias on which lithotamnian limestones rest, followed by spongit calxillites and Baden sandstones. The transition to sarmat is marked by the beginning of the deposition of brackish deposits, ie obliquely layered biocalcarenites on which the transitional obliquely laminated oncoid VI limestones rest. The youngest deposits of the investigated area are Lower Pannonian flat layered clay limestones better known as "croatica deposits".

• Keywords: Medvednica; paleozoik; kreda; trijas; miocen
• Keywords (english): Medvednica Mt.; Paleozoic; Cretaceous; Triassic; Miocene
• Language: croatian
• URN:NBN: urn:nbn:hr:217:900192
• 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
• Created on: 2022-10-04 09:16:39