The geochemical properties of the South-Eastern Alps volcanics (SEAV, Eocene age) call for a within-plate origin of the most primitive basalts, in contrast to the widespread calc-alkaline magmatism ...which developed some million years later northwestwards along the Periadriatic Lineament. The two contrasting magmatic suites that coexist in the Alpine area define binary mixing relationships in the Sr–Nd and Sr–Pb isotopic space, the end members of which being a crustal component (e.g. lower continental crust) and a HIMU-DMM component (e.g. the SEAV). The occurrence of a HIMU (high
μ
=
high
238U/
204Pb) component, which normally traces mantle plumes of deep mantle origin, in a tectonic regime dominated by collision tectonics (the tertiary convergence of European and Adriatic plates) can be explained by slab detachment and ensuing upwelling of mantle material through the lithospheric gap. We combine geochemical data and geophysical modelling to unravel the evolution of the Alpine slab after interaction with plume material and the genesis of the Alpine magmatism. The combination of changes in negative buoyancy caused by continental subduction and softening of a part of the slab caused by slab–plume interaction may act as a regulator for the time of slab breakoff and, consequently, for the variations of magmatism in the overriding lithosphere above a subduction zone. The thermal evolution of a subducting slab is modified by contact with the plume material which decreases significantly the total strength of the slab and favours slab detachment. Interactions between the HIMU component and the shallower depleted mantle can account for the geochemical characteristics of the SEAV. Counterflows of plume material towards the top of the subducting slab may also increase heating and partial melting of the overriding mantle wedge, giving rise to the calc-alkaline suite outcropping in the proximity of the Periadriatic Lineament.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
In this article crossbow fibulae with a firm catch plate and with a knob bow of the 5th and 6th centuries found in Slovenia are presented. We have also added new finds to their ...distribution in the southeastern Alps and tried to show that they were used by the Romanized population. Also, we discuss the rare finds of Balkan crossbow fibulae with an inverted foot in Slovenia, which reflect the less well-known Byzantine presence in the 6th century.
The paper presents a Late Roman strap end with a rider from Tonovcov grad above Kobarid in western Slovenia and comparable belt sets with rectangular buckle plates and strap ends from the ...southeastern Alps and Pannonia. The author discusses the decorative motif of the rider or Bellerophon and Chimera which appears on belts sets and links it to the representation of victory over the enemy and the equipment of high military representatives on the Pannonian limes and its hinterground in the critical time of the late 4th and early 5th century.
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U radu se na temelju terenskih istraživanja među Slovencima u Kanalskoj i Ziljskoj dolini (koje su razdijeljene jugoslavenskom, talijanskom i austrijskom granicom) razmatraju elementi kulturnog ...identiteta naroda u graničnom području triju velikih jezičkih zajednica: slavenske (s najduljom tradicijom - od 6. st. u tom području) te romanske i germanske. Razmatrajući pučku kulturu u okružju suvremenih evropskih tokova, autor dolazi do zaključka da pučka kultura više nije samo način života nego da je izraz zajedničke svijesti o vlastitom identitetu zajednice, a da se jezične razlike prije poimlju kao različiti izričaji (idiomi) nego kao različita etnička pripadnost
Do ovakvih zaključaka autor je došao prateći razvojne odnose u slovenskoj govornoj skupini od početka prošlog stoljeća do suvremenosti. Autor stoga smatra da je u opisivanju socijalnog realiteta tradicijske Evrope primjerenije govoriti o 'pučkom društvu' i pučkoj kulturi (folk society, folk culture) nego o društvenim rodovima i klasnom društvu.
The aim of this research was to investigate the structure of the benthic diatom community and its relations to selected environmental parameters. We collected samples in 16 karst ponds in the alpine ...region of Slovenia, where the Alpine karst is found. Since the predominating substrate in these ponds was clay, the epipelic community was analyzed. Hydromorphological characteristics, and physical and chemical conditions were also measured at each site. We found 105 species of diatoms, which belonged to 32 genera. The most frequent taxa were Gomphonema parvulum (Kützing) Kützing, Navicula cryptocephala Kützing, Sellaphora pupula (Kützing) Mereschkowsky (species group) and Achnanthidium pyrenaicum (Hustedt) Kobayasi. The pond with the lowest diversity was found at the highest altitude, while, on the other hand, the most species-rich pond was found at the lowest altitude. Regarding the ecological types, the most common were motile species. We confirmed a positive correlation between the number of diatom species and the saturation of water with oxygen, while correlation between species richness and NH4-N was negative. The content of NO3-N and NH4-N explained almost 20% of the total variability of diatom community. Unlike our expectations, we calculated a negative correlation between the diversity of macroinvertebrates and diatoms, which is probably a consequence of different responses to environmental conditions.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
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