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Wyszukujesz frazę "Sawłowicz, Zbigniew" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
A short review of pyroducts (lava tubes)
Autorzy:
Sawłowicz, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1836259.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
caves
speleothems
extraterrestrial
volcanic environment
Kazumura Cave
Opis:
Lava tubes and caves, when accessible for man, are very common in volcanic environments and poorly known to non-specialists. This short overview presents the distribution and forms of lava tubes, their speleothems and mineralogy and modes of formation. Studies of lava caves outside of Earth currently are a topic of great interest, as they may be potential locations for some life forms and future bases in space exploration. Basic features of lava tubes are illustrated with reference to the longest lava cave in the world, Kazumura Cave, in Hawaii.
Źródło:
Annales Societatis Geologorum Poloniae; 2020, 90, 4; 513-534
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A short review of pyroducts (lava tubes)
Autorzy:
Sawłowicz, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1836682.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
caves
speleothems
extraterrestrial
volcanic environment
Kazumura Cave
Opis:
Lava tubes and caves, when accessible for man, are very common in volcanic environments and poorly known to non-specialists. This short overview presents the distribution and forms of lava tubes, their speleothems and mineralogy and modes of formation. Studies of lava caves outside of Earth currently are a topic of great interest, as they may be potential locations for some life forms and future bases in space exploration. Basic features of lava tubes are illustrated with reference to the longest lava cave in the world, Kazumura Cave, in Hawaii.
Źródło:
Annales Societatis Geologorum Poloniae; 2020, 90, 4; 513-534
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on the origin of cerussite in the Upper Silesian Zn-Pb deposits, Poland
Autorzy:
Szczerba, Marek
Sawłowicz, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2086512.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
Zn-Pb deposits
Upper Silesia
cerussite
oxidation
galvanic coupling
Opis:
Cerussite, the most important oxidized lead mineral in the Upper Silesian Zn-Pb deposits, occurs in two readily distinct types: fine-grained cerussite replacing galena in-situ and macrocrystalline cerussite filling open fractures and cavities. Microscopic observations and thermodynamic considerations lead to the conclusion that galena can be oxidized to lead carbonate directly, not necessarily through an intermediate sulphate phase. Locally present iron sulphides undergoing oxidation acidify solutions and provide ferric ions which are important oxidizing agents. In such microenvironments, anglesite can preferentially form. Cerussite and galena commonly coexist together with non-oxidized zinc sulphides. It is difficult to explain such assemblages if galvanic couplings made of these two sulphides are not considered. These couplings are only formed when these two sulphides are in direct contact. In such an assemblage, galena undergoes oxidation, mostly to cerussite, and sphalerite is passivated. When there is no direct contact between sulphides, the galvanic couplings do not exist. Galena surfaces become covered by oxidation products which inhibit further oxidation. As such a cover does not form on sphalerite, it can be easily oxidized.
Źródło:
Mineralogia; 2009, 40, 1/4; 53--64
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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