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Abstract

Piękne włoskie marmury, barwne polskie piaskowce, nawet twarde skandynawskie granity nie są odporne na ,,ząb czasu". Bez względu na to, z jakiego kamienia wykonujemy posągi naszych wieszczów, czeka je ta sama, przygnębiająco szara starość. Chyba, że poznamy winowajców i podejmiemy walkę.
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Authors and Affiliations

Marek W. Lorenc
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Abstract

Neither beautiful Italian marbles nor colorful Polish sandstones, not even hard Scandinavian granites are impervious to the "tooth of time." No matter kind of stone we carve statues of our beloved poets and leaders from, they can all expect to meet the same depressing end - unless we get to know the culprits and learn to put up a fight.
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Authors and Affiliations

Marek W. Lorenc
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Abstract

Nine samples of basic (dolerite, gabbro) intrusions collected at Bellsund, South Spitsbergen, have been K−Ar dated. Three dates, between 87.8 and 102.9 Ma, obtained from dolerite sills which intrude Carboniferous and Permian deposits in Van Keulenfjorden point to a Cretaceous age of intrusive activity (Diabasodden Suite). The K−Ar dates obtained from dolerite and gabbro which intrude Upper Proterozoic metasedimentary terrane of Chamber− lindalen form two groups: the dates between 97.1 and 178.6 Ma point to a Mesozoic age of the intrusions (Diabasodden Suite); the dates from a tectonized gabbroid (280.9–402.0 Ma) might point to a Late Palaeozoic age of the intrusion. No K−Ar dates which would indicate a Proterozoic age of the basic intrusions were obtained

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Authors and Affiliations

Krzysztof Birkenmajer
Zoltán Pécskay
Krzysztof P. Krajewski
Marek W. Lorenc

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