Cretaceous/Tertiary (K/T) boundary is an important catastrophic event in the history of our planet as it caused an extinction of 4/5 of all living organisms. In Kras, the boundary occurs in a shallow-water development, exceptional in the World's record. Catastrophic conditions are reflected in isotopic composition of carbonate rocks. Limestones at the boundary are strongly enriched with the light carbon isotope - in Dolenja vas, the highest value (11 ‰) for the whole Mediterranean region has been recorded. The boundary rock is enriched with Ir and other trace elements, too.
Carbonate, low-temperature ((20-40oC) thermal water reservoirs are economically important in Slovenian spa, healing and recreation tourism. Major ion composition is dominated by Ca2+ and Mg2+. Sr is abundant in the studied waters from Jurassic limestone reservoirs, seemingly owing to their high aragonite content. PAAS normalized REE abundance does not mimic the reservoir rock composition but primarily indicates their solubility in thermal waters. U/Th ratios are high in the waters from carbonate reservoirs as uranium preferentially incorporates into calcite shells of marine organisms.
Some km thick succession of Tertiary sediments and sedimentary rocks in the Mura Basin (NE Slovenia) comprises reservoirs of oil, gas and thermal waters. Lithology and the asseblages of foraminifera fauna in cored deep wells cores enabled recognition of seven formations, and some of them were determined for the first time. The studeies encompass the neighboring areas, too, like Slovenske Gorice, Haloze, Kozjansko and Trbovlje coal basin. The work provides a firm basis for the forthcomming aplicative studies.
Precise mineral composition of clay minerals (illite/muscovite, chlorite, kaolinite, Ca-montmorillonite, interlayered kaolinite/montmorillonite having Reichweite R1 and R0) served for an estimation of specific surface, consistency and liquation (Atterberg consistency limit). Mineralogical data obtained correlates with geomechanical parameters of sediments, and serves as a good basis for aplicative studeis, i.e. recovery of landslides, the choice of clay layers in waste repositories.
V svetu dobro znana katastrofična meja med permskim in triasnim sistemom je bila predmet sedimentoloških, izotopskih in geokemičnih raziskav. V Karavankah (profil Jelendol pri Tržiču) je ta v dolomitnem razvoju, na Idrijskem (profila Masore in Idrijca) pa v apnenčevem razvoju. V obeh profilih beležimo za 4 ‰ znižane vrednosti ?13C, višje koncentracije redkih zemelj ter intenzivno spremembo mikrofaciesa. V profilih pri Idriji je bil prvič ugotovljen tudi oolitni horizont, v Alpah in Dolomitih znan kot Tesero horizont.