The purpose of the study was to assess the effect of selected fish farming on surrounding marine sediment. Major, minor and trace elements were used to estimate the spatial and temporal distribution and their possible relationship with local aquacultural activity. Concentrations of heavy metals in sediment below fish cages were notably different than reference site but generally lower than background values observed in Central Adriatic. Beside, heavy metal concentrations at the reference site varied from lower levels to values even higher than those observed below the high-production cages. Such results suggest that the effect of observed fish farm activity on the local marine ecosystem is practically negligible.
COBISS.SI-ID: 953694
The aim of this study was to evaluate and examine the geochemical characteristics of rare earth elements (REEs) in Kočani paddy soils and rice samples (Oryza sativa L.) from the Republic of Macedonia. The concentrations of REEs in paddy soils and rice were measured. Sequential extraction procedure was used to assess the mobility and bioavailability of REEs. Elevated concentrations of REEs in paddy soils can be explained by contributions from acid and intermediate igneous rock. Low percentages of REEs were bound to the water-soluble and exchangeable fractions, revealing low mobility of REEs. Small amount of REEs were detected in rice. The calculated transfer factor (TF) were also very low, confirming a small accumulation of REEs in the studied crops.
COBISS.SI-ID: 962654
Phase relations in UHP kyanite eclogites (Pohorje, Eastern Alps) via Perplex. UHPM due to Cretaceous intracontinental subduction at 3.1-3.5 GPa and 765-835 °C. Modeling of symplectites after omphacite/kyanite revealed isothermal decompression. High T at peak P is due to radiogenic heat production (subducted continental crust).
COBISS.SI-ID: 962142
Lead and zinc ore deposits within the Mežica ore field, Northern Slovenia, belong to the Mississippi Valley Type of ore deposits. On an area of 64km2 there are more than 350 ore bodies and numerous ore occurrences mostly within Middle Triassic platform limestones and dolostones. On the base of detailed stable isotope analyses of sulphur it is obvious a heterogeneous source of H2S for the ore minerals formation and their precipitation in thermodynamic disequilibrium.
COBISS.SI-ID: 873822
Salt crystallisation is a principal deterioration factor of many stone monuments. In this study, samples of weathering products of two baroque monuments in Ljubljana, Sloveni), as well as the limestone used in their construction (Lesno Brdo limestone) were investigated in order to ascertain the main mineral phases produced during the weathering process. A combination of micro-Raman spectroscopy and X-ray powder diffraction was successfully applied to identify micrometre-size minor components in the limestone and the weathering.
COBISS.SI-ID: 826718