Paleogenske Prijelazne naslage područja Vinodolske kotline

master's thesis

• Title (english): Paleogene transitional beds of the Vinodol valley
• Author: Matej Pavlović
• Mentor: Vlasta Ćosović (mentor)
• Committee member: Vlasta Ćosović (predsjednik povjerenstva)
• Committee member: Đurđica Pezelj (član povjerenstva)
• Committee member: Nenad Tomašić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2023-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Na području Vinodolske kotline snimljeni su geološki stupovi u blizini Triblja.
Uzorkovane naslage su opisane u literaturi kao Foraminiferski vapnenci i Prijelazne naslage. U
svrhu odredbe starosti, taksonomski su određene vrste velikih bentičkih, te rodovi i vrsta
planktonskih foraminifera. Na temelju vrsta Alveolina aragonensis HOTTINGER i Asterocyclina
stella taramelli MUNIER-CHALMAS, taloženje istraživanih Foraminiferskih vapnenaca
odgovara donjem ipru (SBZ9 – SBZ11). Rodovi planktonskih foraminifera (Hantkenina i
Morozovella) i vrsta Globigerinatheka index FINLAY u uzorcima Prijelaznih naslaga definiraju
srednjolutetsku, E9 (Globigerapsis kugleri / Morozovella aragonensis) biozonu. Kvantitativna
metoda točkastog brojanja pomoću mreže (Point counting), opis i distribucija zrna (biogenih i
abiogenih) vapnenaca poslužili su za određivanje mikrofacijesa, na temelju kojih su interpretirani
okoliši taloženja. Dobiveni rezultati ukazuju na srednju rampu kao okoliš taloženja
Foraminiferskih vapnenaca i gornji dio padine za Prijelazne naslage. Promjena u brojčanoj
zastupljenosti predstavnika određenih rodova planktonskih foraminifera Prijelaznih naslaga
ukazuje na moguće temperaturne oscilacije tijekom taloženja.

Abstract (english)

In the area of Vinodol Valley, near Tribalj, Foraminiferal limestones and Transitional
beds deposits were sampled. Species and genera of benthic and planktonic foraminifera were
identified to determine the age of the deposits. The stratigraphic range of the species Alveolina
aragonensis HOTTINGER and Asterocyclina stella taramelli MUNIER-CHALMAS indicates the
lower Ypresian (SBZ9 – SBZ11) as the age of deposition of the Foraminiferal limestones. Based
on identified genera (Hantkenina and Morozovella) and Globigerinatheka index FINLAY species
of planktonic foraminifera, Transitional beds were assigned to the middle Lutetian, i.e. planktonic
E9 (Globigerapsis kugleri / Morozovella aragonensis ) zone. The quantitative analysis (point
counting) and the composition of the grains in the studied samples provide a description of the
microfacies, used to interpret the depositional conditions. Foraminiferal limestones were deposited
on the middle ramp, whereas the upper part of the slope was the environment for sedimentation of
the Transitional beds. The changes in the proportion of certain genera of planktonic foraminifera,
indicate possible temperature variations during the deposition of the Transitional beds.

• Keywords: Prijelazne naslage; Vinodolska kotlina; planktonske foraminifere; eocen; Foraminiferski vapnenci
• Keywords (english): Transitional beds; Vinodol valley; planktonic foraminifera; Eocene; Foraminiferal limestones
• Language: croatian
• URN:NBN: urn:nbn:hr:217:106385
• 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; Embargo expiration date: 2024-08-22
• Created on: 2023-06-21 12:37:15