Zajednica teških minerala u sedimentu Crvene plaže (otok Vrgada) - pokazatelj dužobalnog transporta

master's thesis

• Title (english): Heavy mineral assemblage in Red beach sediment Vrgada Island indicator of long shore drift
• Author: Nina Furčić
• Mentor: Kristina Pikelj (mentor)
• Mentor: Frane Marković (mentor)
• Committee member: Kristina Pikelj (predsjednik povjerenstva)
• Committee member: Frane Marković (član povjerenstva)
• Committee member: Borna Lužar-Oberiter (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2022-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Na sjevernom dijelu otoka Vrgade, koja je uglavnom izgrađena od krednih vapnenaca, izdanjuje pleistocenski sediment u kojem je oblikovan obalni klif. U njegovom podnožju se nalazi pretežito pješčana plaža izgrađena od materijala nastalog erodiranjem klifa, a pretpostavlja se da je taj sediment naknadno distribuiran dužobalnom strujom. Cilj ovog rada je potvrđivanje pretpostavljenog dominantnog dužobalnog transporta od istoka prema zapadu. Uzorkovano je devet uzoraka sedimenta, pet s istočnog i četiri sa sjeverozapadnog dijela plaže. Rezultati granulometrije, određivanja udjela karbonata, separacije teške i lake mineralne frakcije te mikroskopiranje teške mineralne frakcije ukazuju na pretpostavljeni dužobalni transport od istoka prema zapadu.

Abstract (english)

Vrgada Island is mostly composed of Cretaceous limestones, however, in the northern part of the island Pleistocene sediments crop out in which the coastal cliff was formed. At the foot of the cliff, there is a predominantly sandy beach built of material eroded from the cliff. It is assumed that this sediment was subsequently distributed by longshore drift. The aim of this study is to confirm the assumed dominant longshore drift from east to west. Nine sediment samples were collected along the eastern and northwestern parts of the beach. The results of granulometric analysis, determination of carbonate content, separation of heavy and light mineral fractions, and quantitative analysis of heavy mineral fraction indicate the assumed longshore drift from east to west.

• Keywords: teški minerali; Jadransko more dužobalni transport; klif; pješčana plaža
• Keywords (english): heavy minerals; Adriatic Sea; longshore drift; cliff; sandy beach
• Language: croatian
• URN:NBN: urn:nbn:hr:217:156966
• 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: Embargoed access; Embargo expiration date: 2024-09-23
• Created on: 2022-10-13 09:03:39