Magnetni susceptibilitet tala razvijenih na karbonatnim stijenama južne Dalmacije

master's thesis

• Title: Magnetni susceptibilitet tala razvijenih na karbonatnim stijenama južne Dalmacije : diplomski rad
• Title (english): Magnetic susceptibility of grounds developed on carbonates of South Dalmatia
• Author: Adrian Špehar
• Mentor: Slobodan Miko (mentor)
• Committee member: Slobodan Miko (predsjednik povjerenstva)
• Committee member: Goran Durn (član povjerenstva)
• Committee member: Jelena Parlov (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: 2017-02-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Geological Engineering

Abstract

Istraživanje je provedeno na području Splitsko – dalmatinske i Dubrovačko – neretvanske županije u sklopu projekta „Promjena zaliha ugljika u tlu i izračun trendova ukupnog dušika i organskog ugljika u tlu te odnosa C:N“. Na uzorcima prikupljenim širom istraživanog područja (do 30 cm u intervalima od 10 cm) mjerio se maseni i frekventni magnetni susceptibilitet u svrhu interpretacije područja koja pokazuju visoke vrijednosti magnetnog susceptibiliteta. Dodatnim analizama uzoraka kao što su geokemijska, rendgenska difrakcijska analiza (XRD), i kategorizacijom prema tipu tla i vrsti pokrova željela se dobiti informacija kakav one utjecaj imaju na raspodjelu magnetnog susceptibiliteta na području istraživanja. Rezultati statističkih analiza su pokazali kako se magnetni susceptibilitet veže uz Al, Fe i Ti. Povećana prisutnost Ca u tlu dovodi do smanjenja MS. Uzorci su prikupljeni s četiri dominantna tla, a to su crvenice, smeđa tla, crnice i eugleji. Najveće vrijednosti magnetnog susceptibiliteta izmjerene su na uzorcima crvenice, nakon toga na uzorcima smeđih tala, dok je najniža vrijednost za euglej. Povećanjem dubine se u većini uzoraka povećavao i magnetni susceptibilitet što dovodi do zaključka kako su magnetne čestice litogenog podrijetla. Poljoprivredna zemljišta i močvare imaju najniže vrijednosti magnetnog susceptibiliteta, iz čega proizlazi kako sadrže najmanji udio magnetnih čestica. Najviše su vrijednosti izmjerene za pašnjake.

Abstract (english)

This study was performed in the area of Split – Dalmatian and Dubrovnik – Neretvanska county as a part of project entitled „The change of carbon stocks in soil and calculation of trends of nitrogen and organic carbon in soil and C:N ratio“. Mass and frequency magnetic susceptibility (MS) was measured in the samples collected around the studied area (up to 0.3 meters in intervals of 0.1 meter) to determine areas with high values of magnetic susceptibility. Additional analyses, such as X – Ray Difraction (XRD), geochemical, soil type classification and land cover were made to estimate their influence on magnetic susceptibility distribution around the area of research. Results of geochemical analyses have shown that magnetic susceptibility mostly depends on elements Al, Fe and Ti. Presence of Ca results in lower MS values. Samples were collected in four dominant soil types: Terra Rossa, brown soils, humic soils and eugley soils. The highest MS is measured in Terra Rossa samples, lower in brown soils, and the lowest in eugley soils. MS values increase with depth in most samples, so the conclusion is that magnetic particles are lithogenetic in origin. Values of MS are lowest in croplands and wetlands due to the lowest amount of magnetic particles in them. In the samples collected in grasslands the highest values were measured.

• Keywords: Splitsko–dalmatinska; Dubrovačko–neretvanska; maseni i frekventni magnetni susceptibilitet; crvenice; smeđa tla; geokemijske analize
• Keywords (english): Split – Dalmatian county; Dubrovnik – Neretvanska county; mass and frequency magnetic susceptibility; Terra Rossa soils; brown soils; geochemical analyses
• Language: croatian
• URN:NBN: urn:nbn:hr:169:600702
• Study programme: Title: Geological engineering; specializations in: Hydrogeology and engineering geology, Environmental geology; Course: Hydrogeology and engineering 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: 2017-03-28 12:54:10