Granulometrijske i geokemijske karakteristike pedo-sedimentnog kompleksa kod Rovinja

master's thesis

• Title: Granulometrijske i geokemijske karakteristike pedo-sedimentnog kompleksa kod Rovinja : diplomski rad
• Title (english): Granulometric and geochemical characteristics of the pedo-sediment complex near Rovinj : master's thesis
• Author: Fran Vrdoljak
• Mentor: Goran Durn (mentor)
• Committee member: Goran Durn (predsjednik povjerenstva)
• Committee member: Stanko Ružičić (član povjerenstva)
• Committee member: Ivan Sondi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2022-01-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Cilj ovog diplomskog rada bio je odrediti fizikalne, mineraloške, granulometrijske i geokemijske karakteristike pedo-sedimentnog kompleksa kod Rovinja debljine oko 9 m. Na terenskim istraživanjima po profilu je izuzeto devetnaest uzoraka na kojima su provedena detaljna laboratorijska istraživanja i to: boje, kapaciteta kationske zamjene (CEC), pH (H2O, KCl), sadržaja karbonata, sadržaja Fe i Mn topivih u ditionitu (DCB) i oksalatu, granulometrijskog sastava primjenom sijanja, pipetiranja i laserske difrakcijeom, mineralnog sastava primjenom rendgenske difrakcijske analize (XRD) i kemijskog sastava glavnih elemenata, elemenata u tragovima i elemenata rijetkih zemalja (REE). Mineralni i granulometrijski sastav uzoraka dominantno žućkasto crvene boje (5YR hue vrijednosti) vrlo je sličan mineralnom sastavu istarskih crvenica. Distribucija glavnih oksida i geokemijskih indeksa (ΣBaza/Al2O3, ΣBaza/TiO2 i Al2O3/SiO2) jasno ukazuje da se pedosedimentni kompleks sastoji od najmanje tri ciklusa spiranja/erozije i pedogeneze. Omjeri La/Ce i Sm/Nd jasno pokazuju da je supstrat iz kojeg je nastao pedosedimentni kompleks dominantno lesnog podrijetla. U ovoj fazi istraživanja ne možemo zaključiti koliko dugo su ti ciklusi trajali. Sve se moglo dešavati kroz duži vremenski period (npr. zadnjih 300 000 godina; od OIS 8 do OIS 1) ali i kroz kraći vremenski period (npr. zadnjih 70 000 godina; od OIS 4 do OIS 1).

Abstract (english)

The aim of this work was to determine the physical, mineralogical, granulometric and geochemical properties of the pedo-sedimentary complex near Rovinj with a thickness of about 9 m. The following parameters were determined: CEC, pH (H2O, KCl), carbonate content, content of Fe and Mn soluble in dithionite (DCB) and oxalate, granulometric composition by sieving, pipetting and laser diffraction, mineral composition by X-ray diffraction analysis (XRD) and chemical composition of major elements, trace elements and rare earth elements (REE). The mineral and granulometric composition of the samples of predominantly yellowish red color (5YR hue values) is very similar to the mineral composition of the Istrian Terra Rossa. The distribution of major oxides and geochemical indices (ΣBase / Al2O3, ΣBase / TiO2 and Al2O3 / SiO2) clearly indicates that the pedosedimentary complex consists of at least three cycles of erosion and pedogenesis. The La/Ce and Sm/Nd ratios clearly indicate that the substrate from which the pedosedimentary complex was formed is predominantly of loess origin. At this stage of the research, we cannot say how long these cycles lasted. Everything could have happened over a longer period of time (e.g., the last 300,000 years; from OIS 8 to OIS 1), but also over a shorter period of time (e.g., the last 70,000 years; from OIS 4 to OIS 1).

• Keywords: tlo; granulometrijske značajke; geokemijske značajke; mineraloške značajke; fizikalne značajke; kamenolom Fantazija; Rovinj
• Keywords (english): soil; granulometric characteristics; geochemical characteristics; mineralogical characteristics; physical characteristics; Fantazija quarry; Rovinj
• Language: croatian
• URN:NBN: urn:nbn:hr:169:252585
• Project: Number: IP-2019-04-8054; Title: Zapadnoistarska antiklinala kao idealni prirodni laboratorij za proučavanje regionalnih diskordancija u karbonatnim stijenama; Acronym: WIANLab; Leader: Goran Durn; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Environmental geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka geološkog inženjerstva (magistar/magistra inženjer/inženjerka geološkog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-02-18 09:05:21