Microfossil assemblages of the uppermost part of the Gornji Humac Formation from the Blaca Cove, Island of Brač

master's thesis

• Title: Mikrofosilne zajednice vršnog dijela formacije Gornji Humac uvale Blaca, otok Brač
• Author: Adriana Varga
• Mentor: Blanka Cvetko Tešović (mentor)
• Committee member: Blanka Cvetko Tešović (predsjednik povjerenstva)
• Committee member: Marijan Kovačić (član povjerenstva)
• Committee member: Damir Bucković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); (Division of Geology and Paleontology); Zagreb
• Defense date and country: 2018-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Mikopaleontološkim analizama 47 uzoraka s lokaliteta Blaca, otoka Brača određena je mikrofosilna zajednica i mikrofacijesna obilježja naslaga u kojima se pojavljuje. Gornjokredne naslage otoka Brača litostratigrafski su podijeljene u šest formacija. Predmet istraživanja ovoga rada bila je formacija Gornji Humac točnije vršni dio formacije kojega izgrađuju vapnenci muljne osnove, a na manjem djelu prepoznaju se i dolomitizirani vapnenci. Ukupno je određeno i opisano 17 vrsta velikih bentičkih foraminifera, taumatoporela i dekastronema te pet mikrofacijesnih tipova koji pripadaju u dvije facijesne zone od unutarnjeg dijela karbonatne platforme s normalnim uvjetima do restriktivnog dijela karbonatne platforme. Osim opisa mikrofosilnih zajednica bentičkih foraminifera posebna pažnja posvećena je opisu zajednica taumatoporela i dekastronema.

Abstract (english)

Micropaleontological analysis 47 samples from the Blaca Cove, Island of Brač it is determinate microfossil assemblages and microfacies characteristics of the deposits in which it appears. Upper Cretaceous deposits of the Island of Brač are litostratigraphicly subdivided into six formations. The subject of the research was the Gornji Humac Formation, the upper part of the formation is characterized by limestones, and in the smaller part is also recognized the dolomitized limestones. A total of 17 species of large benthic foraminifera, Thaumatoporella and Decastronema, and five microfacies types belonging to two facies zones from the inner part of the carbonate platform with normal conditions to the restrictive part of the carbonate platform have been determined and described. In addition to the description of microfossil assemblages of benthic foraminifera, special attention is devoted to the description of the associations of Thaumatoporella and Decastronema.

• Keywords: bentičke foraminifere; incertae sedis (Thaumatoporella); donji kampan; formacija Gornji Humac; uvala Blaca; Jadransko-Dinaridska karbonatna platforma.
• Keywords (english): Benthic foraminifera; incertae sedis (Thaumatoporella); lower Campanian; Gornji Humac Formation; Blaca Cove; Adriatic-Dinaridic Carbonate Platform.
• Language: croatian
• URN:NBN: urn:nbn:hr:217:402131
• Study programme: Title: Geologija; Study programme type: sveučilišni; Study level: diplomski; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-03-01 10:07:14