Mikropaleontološke i litofacijesne značajke stijena uvale Sakarun, Dugi otok

undergraduate thesis

• Title (english): Micropaleontological and lithofacies characteristics of the Sakarun cove deposits, Dugi otok
• Author: Simona Spasovska
• Mentor: Blanka Cvetko Tešović (mentor)
• Mentor: Maja Martinuš (komentor)
• Committee member: Blanka Cvetko Tešović (predsjednik povjerenstva)
• Committee member: Maja Martinuš (član povjerenstva)
• Committee member: Nenad Tomašić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2023-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract

Dugi Otok kao dio Jadranske karbonatne platforme (AdCP) tijekom mlađe krede, sve do mlađeg santona, bio je mjesto taloženja dubokomorskih naslaga. Uvala Sakarun pripada sjeverozapadnom dijelu Dugog Otoka. Ona je jedan od tipova džepnih plaža koje nastaju iz prethodno oslabjelih stijena tektonikom i podložne su djelovanju energije valova. Oblikovana je od vapnenaca formacije Veli Rat čiji su slojevi vertikalnog ili subvertikalnog položaja te je karakteriziraju u donjem dijelu biokalkareniti i... More biokalkruditi s fragmentima rudista, foraminifera (planktonskih i manjim dijelom bentičkih) i drugih bioklasta. U slijedu naslaga prepoznati su i tanko uslojeni laminirani sitnozrnasti biokalkareniti. Karakteristike Veli Rat formacije ukazuju na taloženje turbiditnim strujama u dubokomorskom okolišu. U ovom radu napravljena je analiza mikroskopskih preparata gornjokredne starosti na uzorcima uvale Sakarun i određeno je četiri litofacijesna tipa te je prepoznata mikropaleontološka zajednica koja ukazuje na mlađu krednu starost uz fragmente rudista, bodljikaša i druge bioklaste. Less

Abstract (english)

Dugi Otok, as part of the Adriatic Carbonate Platform (AdCP) during the Late Cretaceous, until the Late Santonian, was the place of deposition in deep-marine enviroments. Sakarun Cove belongs to the northwestern part of Dugi Otok. It is one of the types of pocket beaches that are formed from previously weakened rocks by tectonics and are prone to the wave action. It is formed from limestones of the Veli Rat formation, the layers of which are vertical or subvertical and characterized in the... More basal part by biocalcarenites and biocalcrudites with fragments of rudists, foraminifera (planktonic and to a lesser extent benthic) and other bioclasts. In the depositional sequence, thinly-bedded laminated fine-grained biocalcarenites were also recognized. The characteristics of the Veli Rat formation indicate deposition by turbiditic currents in a deep-marine environment. In this paper, an analysis of microscopic thin-sections of Late Cretaceous age was made on samples from Sakarun Cove and five lithofacies types were determined, and a micropaleontological assemblages (planktonic foraminifera) was recognized that indicates a younger Cretaceous age with rudist fragments, echinoderms and other bioclasts. Less

• Keywords: mikrofosili; turbiditi; Dugi Otok; Jadranska karbonatna platforma (AdCP)
• Keywords (english): lithofacies; microfossils; turbidites; Adriatic Carbonate Platform (AdCP); pocket beaches
• Language: croatian
• URN:NBN: urn:nbn:hr:217:094046
• Study programme: Title: Geology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-07-14
• Created on: 2025-02-04 14:23:41