Naslage srednjeg miocena Svetonedeljskoga brega

master's thesis

• Title (english): Middle miocen deposits of Svetonedeljski breg locality
• Author: Dragan Vlaisavljević
• Mentor: Jasenka Sremac (mentor)
• Committee member: Jasenka Sremac (predsjednik povjerenstva)
• Committee member: Tihomir Marjanac (član povjerenstva)
• Committee member: Marijan Kovačić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2017-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

U ovom su radu istraživane miocenske naslage na području Svetonedeljskoga brega sjeveroistočno od Zagreba. Izdanak se sastoji od 12 slojeva iz kojih su uzeti uzorci te su tri uzorka odabrana za detaljnije analize (uzorci slojeva 4, 6 i 7). Mikropaleontološkom analizom je određena starost naslaga: 1) pomoću provodnih vrsta mikrofosila i 2) prema karakterističnoj mikrofosilnoj zajednici. Uzorci su najbogatiji foraminiferama i ostrakodima. Na temelju nalaza provodnih vrsta foraminifera Nonion bogdanowitzi, te Varidentella reusi određena je sarmatska starost, a na temelju mikrofosilne zajednice je određena zona Elphidium haernium. U sloju 6 zabilježen je jači utjecaj slatke vode, jače oslađivanje te je stoga moguće oplićavanje i regresivni trend, sloj 7 pokazuje transgresivni trend te povratak morske faune. Na temelju opisanih parametara određeni su i paleoekološki uvjeti plitkog, toplog, mirnog okoliša, s povremenom utjecajem slatke vode, unutarnjeg šelfa do vanjskog šelfa.

Abstract (english)

This paper investigates Miocene sediments in the area of Svetonedeljski Breg northeast of Zagreb. Outcrop consists of 12 layers of wich three samples selected for more detailed analysis (samples layers 4, 6 and 7). Micropalaeontological analysis determined age of deposits: 1) by a conductive type microfossils and 2) the characteristic mikrofossil community. Samples are richest in foraminiferal ostracodes biota. Based on the findings of indeks species of foraminifera Nonion bogdanowitzi and Varidentella Reussi determined Sarmatian age, based on Microfossil community is determined Elphidium hauernium zone. In the layer 6 there was a stronger freshwater influence, stronger sweetening and therefore possible shallowing and regressive trend, layer 7 shows transgressive trend and return to marine fauna. Based on the parameters described are shallow and paleoecological conditions, warm, quiet environment, the intermittent inflow of fresh water, the internal shelf to the outer shelf.

• Keywords: Sarmat; foraminifere; ostrakodi; Svetonedeljski breg; Paratethys
• Keywords (english): Sarmat; foraminifere; ostrakodi; Svetonedeljski breg; Paratethys
• Language: croatian
• URN:NBN: urn:nbn:hr:217:990537
• 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: 2019-02-20 13:38:13