chondrule उदाहरण वाक्य
उदाहरण वाक्य
- This supports the idea that CAIs crystallization and chondrule formation occurred around the same time during the formation of the solar system.
- The main characteristic of CI chondrites is the lack of recognizable chondrules ( an exception being the sample from Tagish Lake ).
- Saponite is also found in the " dark rims " of chondrules in carbonaceous chondrites and seen as a sign of aqueous alteration.
- Yet small chondrule fragments and calcium-aluminium-rich inclusions ( CAI's ) do occur, but are quite rare.
- The geological history of Benton has four stages : chondrule formation and accumulation, brecciation, thermal metamorphism and finally shock vein formation.
- Most chondrules are composed primarily of the silicate minerals olivine and pyroxene, surrounded by feldspathic material that may either be glassy or crystalline.
- The main arguments for this hypothesis are the relics of chondrules, the euhedral enstatites surrounded by meteoric iron and the occurrence of keilite.
- The variation of accretion efficiency with pebble size during this process results in the size sorting of the chondrules observed in the primitive meteorites.
- The growth of silicate particles is limited by the bouncing barrier to ~ 1 mm, roughly the size of the chondrules found in meteorites.
- Each chondrite group has a distinctive mixture of chondrules, refractory inclusions, matrix ( dust ), and other components and a characteristic grain size.