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Wyszukujesz frazę "“Origin”" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Osady molasowe źródłem mołdawitów
Molasse deposits as a source of moldavites
Autorzy:
Brachaniec, Tomasz
Szopa, Krzysztof
Szczyrba, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/1033000.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
melting
molasse
moldavite origin
substrewnfields
tektites
Opis:
Moldavite are result of melting and mixing of ejecta Cenozoic deposits from Ries crater. The Czech moldavites have different Al, Ca and Si content in contrast to tektites from Lusatian area. Differences in chemical composition of moldavites are caused by local interbedded layers of Tertiary Obere Süâwasser Molasse, which are represented by: quartz sands and limestons with clays.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2014, 5; 25-29
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sferule z granicy Kreda-Paleogen (Lechówka, Polska) – wstępne dane
Spherules from the Cretaceous–Paleogene boundary (Lechówka, Polska) – preliminary data
Autorzy:
Brachaniec, Tomasz
Szopa, Krzysztof
Karwowski, Łukasz
Krzykawski, Tomasz
Salamon, Mariusz
Brom, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/1033022.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Cretaceous–Paleogene boundary
impact origin
smectite
spherule
spinel
Opis:
Samples of boundary clay from Cretaceous–Paleogene deposits from Lechówka, Poland were examined for spherules to confirm the impact origin of the sediment. The chemical composition of investigated spherules show similarities to material from the K–Pg boundary from Stevns Klint. The impact genesis of the spherules is confirmed by the presence of nickel-rich spinel grains on their surfaces. The deposits with spherules are built by smectite with Al and Mg enrichment. This cheto smectite is forming as a result of the weathering of the impact glass.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2015, 6; 17-22
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pytania o kwarc deformacyjny i szokowy
Questions about deformed and shocked quartz
Autorzy:
Kosina, Romuald
Powiązania:
https://bibliotekanauki.pl/articles/1033004.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
deformation
impact
local vs allochtonic origin
meteorites
microstructure
quartz
Opis:
Quartz, known as a common mineral on our planet, is used as a good marker of microstructural deformation created by tectonic activity or meteorite impact. Planar fractures (PFs) and planar deformation features (PDFs) are not randomly oriented in an impacted quartz crystal, but are distinctly connected to crystallographic planes. In a tectonically deformed quartz PDFs are mostly parallel to the plane (0001), but can also be bent. Recrystallization reduces the level of dislocations in such a quartz. However, the difference between both types of quartz is quantitative and not qualitative. One might expect that the impact could reactivate or induce new tectonic metamorphism and/or volcanic activity. In addition, P-T parameters decrease continuously from the impact centre toward outside. Then, intermediate forms of quartz deformation ought to be distinguished. The paper also presents the point of view that the location and identification of deformed and shocked quartz, as well as some allochtonic Scandinavian impactites, transported into the Central Europe during the last glaciation, is highly probable in areas of enhanced tectonic activity in Lower Silesia, Poland. Identification of local rocks with pseudotachylite properties and recognition of their nature, deformed versus shocked, could also be helpful here.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2014, 5; 52-71
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jan Sebastian Dembowski – epigon teorii atmosferycznego pochodzenia meteorytów
Jan Sebastian Dembowski – the epigone of the theory of the atmospheric origin of meteorites
Autorzy:
Kosiński, Janusz W.
Powiązania:
https://bibliotekanauki.pl/articles/1032937.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
history of Polish meteoritics
meteoritica
meteoritics
theories of the origin of meteorites
Opis:
Jan Sebastian Dembowski promoted the theory of the atmospheric origin of meteorites on the beginning 19th century. He wrote work representing arguments on the thing of this theory in 1826. The article represents the meaning of the work J. S. Dembowski.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2012, 3; 55-61
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teorie pochodzenia meteorytów w Polsce w I połowie XIX w.
Theories of the origin of meteorites in Poland in first half 19th century
Autorzy:
Kosiński, Janusz W.
Powiązania:
https://bibliotekanauki.pl/articles/1032936.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
history of Polish meteoritics
meteoritica
meteoritics
theories of the origin of meteorites
Opis:
The theories of the origin of meteorites were introduced in the article present in science in first half 19th century. Present their perceptions in Poland and take down the main works on this subject.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2012, 3; 48-54
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanometer-sized mineral grains and their genetic types in meteorites
Autorzy:
Semenenko, V. P.
Girich, A. L.
Shkurenko, K. O.
Kychan, N. V.
Shyrinbekova, S. N.
Gorovenko, T. M.
Powiązania:
https://bibliotekanauki.pl/articles/411474.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
meteoryt
minerał
typ genetyczny
nanometrowa wielkość ziarna
pochodzenie
meteorite
mineral
genetic type
nanometer-sized grain
origin
Opis:
Three genetically different types of nanometer-sized mineral grains in meteorites can be distinguished based on literature and original data: (a) primitive condensates, (b) metamorphic grains, and (c) weathering products. The first of these groups were formed by condensation in a gas-dust nebula in either a presolar or solar environment. Metamorphic grains were formed as a result of thermal, shock or aqueous metamorphism on the meteorite parent bodies. The third type can clearly be characterized as terrestrial weathering products, which are generally found in meteorite finds and are rare or absent within meteorites recovered shortly after having fallen. Nanometric components are found predominantly within the fine-grained silicate material of primitive meteorites. It is suggested that enhanced accretional properties of nanometer-sized grains could be responsible for the primary accretion of condensed nanoglobules within a protoplanetary nebula. The nature of nanometer-sized inclusions of native W and native Ag originally discovered in the Krymka chondrite is preliminarily discussed.
Źródło:
Meteorites; 2011, 1, 1; 13-19
2299-0313
2299-1220
Pojawia się w:
Meteorites
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Braci Śniadeckich poglądy na meteoryty
Brothers Śniadecki’s about meteorites opinions
Autorzy:
Kosiński, Janusz W.
Powiązania:
https://bibliotekanauki.pl/articles/1033058.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Meteorytowe
Tematy:
Brahin meteorite
Jan Śniadecki
Jędrzej Śniadecki
history of Polish meteoritics
theories of the origin of meteorites
Opis:
Brothers: Jan Śniadecki (1756–1830) and Jędrzej Śniadecki (1768–1838) were prominent Polish scientists. They were Wilnius University professors. There were also meteorites in the circle of their interests.
Źródło:
Acta Societatis Metheoriticae Polonorum; 2016, 7; 82-92
2080-5497
Pojawia się w:
Acta Societatis Metheoriticae Polonorum
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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