Mineralogical and geochemical analytical approach to the characterization of pottery samples from an archaeological site near Mošnje (Slovenia) was conducted. The mineralogical, geochemical and statistical data confirmed the archaeologists´ hypothesis and interpretation of a similar origin / alteration of source material / probable local ceramic production for the majority of the pottery sherds; the imported origin of samples K3 and K13 was recognized, while sample K5 had been intentionally imported as a sample for comparative purposes.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 1084766Monography the Natural Heritage of Bela Krajina is first publication that deals comprehensivelly with the problematics of regions natural heritage. In the Geology chapter, the sedimentary evolution of the region is described in the wider concept of the geological history of the Alpine-Dinaric Realm. In is followed by the discusion about the influence of the geology on the humans, predominantly from the aspect of an use of mineral resources and the protection of water sources. Last section presents the earthquake history and seizmological threat of the Bela krajina.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 1422581In the framework of this doctoral dissertation geochemical analyses of groundwater were conducted in order to determine the impact of lithological structure of aquifer, recharge area climatic characteristics and land use on the groundwater chemical and isotopic composition. Sampled groundwater is mostly modern (recent) which has been verified by the 3H activity in groundwater. Groundwater stable isotope composition (18O and 2H) and -excess values provided the information on recharge areas characteristics (altitude, mixing with surface waters) and source of precipitation recharge (prevailing Atlantic and Mediterranean air masses). Also three different groundwater isotopic altitude effects zones were defined, as well as the groundwater isotope continental effect. Groundwater concentrations of Ca2+, Mg2+, and HCO3- are mostly of natural origin and depend on dissolution of carbonate rocks in relation with the altitude, soil temperature, partial pressure of CO2 from the atmosphere and soil, amount of precipitation, and vegetation cover. The share of carbon contributions from dissolution of carbonate rocks, degradation of organic matter in aquifers, and the atmosphere on the groundwater, has been calculated with dissolved carbon concentration (DIC) and isotopic composition of carbon (13C). Major product of silicate weathering in groundwater is Si and to a lesser extends Na+ and K+. Groundwater Na+ and Cl- can be linked to vicinity of the sea, and groundwater SO42- to weathering of gypsum and sulphide minerals. Prevailing sources of groundwater Na+, Cl-, NO3-, K+, and SO42- in Slovenian groundwaters are mostly of anthropogenic origin. Use of salts for deicing roads during winter time contributes to groundwater Na+ and Cl-. Excessive use of fertilizers, application of manure and slurry on the fields, leakages from sewage systems, septic tanks, and waste waters, contribute to elevated concentrations of groundwater NO3-, K+, SO42, Na+ and Cl-.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 3287035The aim of this study is to determining the composition of artefacts that have been found in archaeological excavations in the graves at Miren. Using modern techniques (XRF, and FTIR) we determine the composition of the two fibulae and the composition of the gem-stone (almandine). We also analyze two belt buckle, one made of lead and the other of silver, indicating that in the case of production and wearing the cheaper material was also used.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 1114974In the framework of this doctoral dissertation, low-pressure polymorphic transformations in the SiO2 system and the influence of nucleation on the final shape of the crystals was investigated. The growth of synthetic crystals was performed using a sol-gel and a hydrothermal method in an autoclave. It was found that under the selected temperature-pressure conditions, the crystallization of micrometre-sized quartz crystals takes place directly from the amorphous SiO2. Based on the observations, the mechanism of the phase transition was divided into the nucleation of particles in the solution, the formation of nanometre-sized crystallites and the subsequent growth of the quartz. Since the morphology of the crystals depends on many factors, such as the nucleation (homogeneous or heterogeneous), the crystal structure, the conditions of crystallization (degree of supersaturation, cooling rate, presence of impurities) and the dominant growth mechanism, I mainly focused on the influence of the nutrient and the duration of the hydrothermal growth. It was shown that already the type of nutrient (tetraethyl orthosilicate, colloidal SiO2) significantly affected the dominant shape of crystals, such as the formation of short-prismatic or long-prismatic crystals. The morphology of the obtained crystals was, with otherwise unchanged experimental conditions, directly dependent on the duration of the experiments, where euhedral micrometre-sized single crystals of quartz were formed during longer times of hydrothermal growth.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 28097319