On the thermodynamics of meteorites and parent bodies III. basaltic achondrites in an increasing SIO2 sequence and comparison of the role of diogenites and komatiites in planetary evolution /
After chondritic thermal metamorphism the thermal evolution of a primitive achondritic mineral assemblage continued by partial melting and outflow of the metal-sulfide components and of the low melting point basaltic components. Metal-sulfide assemblage migrated toward the center, basalt migrated to...
Elmentve itt :
| Szerzők: | |
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| Dokumentumtípus: | Cikk |
| Megjelent: |
Szegedi Egyetem Ásványtani, Geokémiai és Kőzettani Tanszéke
Szeged
2000
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| Sorozat: | Acta mineralogica-petrographica
41 |
| Kulcsszavak: | Kőzettan - előadáskivonat, Ásványtan - előadáskivonat, Földtan - előadáskivonat |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24900 |
| Tartalmi kivonat: | After chondritic thermal metamorphism the thermal evolution of a primitive achondritic mineral assemblage continued by partial melting and outflow of the metal-sulfide components and of the low melting point basaltic components. Metal-sulfide assemblage migrated toward the center, basalt migrated toward the surface of the asteroidal parent body. In our paper the HED basaltic achondrites are arranged into a sequence by their increasing SiC>2 content: diogenites, howardites and eucrites. Comparing this sequence with that of terrestrial basalts of komatiites, picrites and tholeiitic basalts we found a similar bulk thermal evolution trend for them. We give an overview about both of these sequences as a long term planetary evolutionary differentiation sequences by inserting them into the thermal evolution of a solid body. General main trends in planetary differentiation are also discussed. |
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| Terjedelem/Fizikai jellemzők: | 155-173 |
| ISSN: | 0365-8066 |