- Tytuł:
- Shock veins in the Sahara 02500 ordinary chondrite
- Autorzy:
-
Owocki, Krzysztof
Muszyński, Andrzej - Powiązania:
- https://bibliotekanauki.pl/articles/94249.pdf
- Data publikacji:
- 2012
- Wydawca:
- Uniwersytet im. Adama Mickiewicza w Poznaniu
- Tematy:
-
ordinary chondrite
shock veins
subsolidus recrystallization
zwyczajny chondryt
rekrystalizacja - Opis:
- A specimen of the Sahara 02500 ordinary chondrite contains shock-produced veins consisting of recrystallised fine-grained pyroxenes that include small droplets of Ni-rich metal. Non-melted olivines and pyroxenes show planar deformations filled by shock-melted and -polluted metal and troilite. Shock-melted feldspathic glass is present close to the shock veins. Geothermometric estimations indicate that the meteorite locally experienced moderate shock metamorphism with a minimum local peak temperature above 1400ºC, resulting in partial melting of Ca-poor pyroxene and full melting of feldspars, metal and sulphides. The mineral assemblage in the shock veins suggests a pressure during melt recrystallisation below 10 GPa.
- Źródło:
-
Geologos; 2012, 18, 2; 111-118
1426-8981
2080-6574 - Pojawia się w:
- Geologos
- Dostawca treści:
- Biblioteka Nauki
Artykuł