Shock veins in the Sahara 02500 ordinary chondrite

• Autorzy: Owocki Krzysztof , Muszyński Andrzej

Identyfikatory

DOI

10.2478/v10118-012-0006-0

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

ordinary chondrite; shock veins; subsolidus recrystallization

PL

zwyczajny chondryt; rekrystalizacja

• Wydawca: Uniwersytet im. Adama Mickiewicza. Instytut Geologii
• Czasopismo: Geologos
• Rocznik: 2012
• Tom: Vol. 18, No. 2
• Strony: 111--118
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Owocki Krzysztof

• Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland

autor

Muszyński Andrzej

• Institute of Geology, Adam Mickiewicz University, Maków Polnych 16, 61-606 Poznań, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).