Mit diesem Sonderheft soll den Wünschen vieler Sammlerfreunde entsprochen werden, die meine Ausarbeitungen zur Bestimmung von Jura-Fossilien in zusammenhängender Form besitzen und gebrauchen möchten. Gleichzeitig wurde die Bitte berücksichtigt, jene in den MINERA-LIEN-MAGAZIN-Heften 9/1979 und 2/1980 beschriebenen Foraminiferen nochmals zu veröffentlichen. Für alle Anregungen und Unterstützung möchte ich an dieser Stelle dem Verlag, seinen wissenschaftlichen Mitarbeitern sowie meinen zahlreichen Sammlerfreunden danken.

A granodiorite stock intrudes complexly folded and thrust-faulted Paleozoic sedimentary rocks in the Osgood Mountains of eastern Humboldt County, Nevada. Within the metamorphic aureole surrounding the pluton, the sedimentary rocks are converted to cordierite hornfels and marble; tungsten-bearing tactites developed along the contacts of the granodiorite. Cutting the granodiorite and sedimentary rocks is the Getchell fault, along which the disseminated gold ore bodies of the Getchell mine are localized. K-Ar ages of the granodiorite, andesite porphyry, tungsten-bearing tactites, and altered granodiorite from the Getchell mine indicate that emplacement, alteration, and mineralization are all part of a magmatic-thermal episode which took place approximately 90 m.y. ago.

Terminem kamienie szlachetne i ozdobné obejmu-je sig duž§ grupg mineralów i skal maj§cych zastoso-wanie w jubilerstwie, služ§cych do wyrobu ozdób, galanterii artystycznej lub tež užywanych w architek-turze wngtrz. Nazwg kamienie szlachetne czy tež ju-bilerskie stosuje sig do szczególnie pigknych i rzad-ko spotykanych, czystych, jednorodnych i przežro-czystych odmian niektórych mineralów d skal. Odzna-ezaj§, sig one silným polyskiem, efektownym zabar-wieniem (s§ tež bezbarwne), duž§ trwalošci§ i twar-došci§. Maj§. zastosowanie w jubilerstwie, oprawia sig je w zloto, srebro i inne metale szlachetne. Terminem kamienie ozdobné okreála sig natomiast mniej cenne, o mniejszej twardošci i trwalošci lub o mniej efektownym wygl§dzie, minerály i skaly, z których wyrabia sig róžnego rodzaju galanterig artystyczn§, i wyroby pamiftkarskie. <...>

Karst covers more than 13% of the continental ice-free surface of our planet, with major coverage in the Middle East and Central Asia where it occupies approximately 23% of the land surface. According to some estimates more than 20% of the world’s population is consuming groundwater originated from karst aquifers. At the same time, the management of karst aquifers and their water resources is more problematic compared to any other aquifer type due to uncertainties in defining their boundaries, often irregular drainage regime, and vulnerability to pollution. All these problems are closely related to high heterogeneity of karst aquifers and their locally very high permeability <...>