primitive achondrites造句

• Should the onset of melting occur the meteorite would probably be classified as a primitive achondrite instead of a chondrite.
• In 2006 a classification was published that assigned 7 groups to the primitive achondrites, but the classification remains controversial.
• Like all primitive achondrites, acapulcoites have chemical composition and mineralogical similarities with chondrites, some specimen even show relic chondrules.
• The spectrum of 32 Pomona matches an S-type in the Tholen classification system, and is similar to primitive achondrite meteorites.
• The spectrum of 40 Harmonia matches an S-type in the Tholen classification system, and is similar to primitive achondrite meteorites.
• The authors define primitive achondrites as meteorites " " that exceeded their solidus temperature on the parent body " " and thus would partially melt.
• The level of chromium isotope 54 Cr in 謘terplana 065 is similar to those in ordinary chondrites, while oxygen isotopes are similar to those in some rare primitive achondrites . 謘terplana 065 also features a chromium-spinel rutile assemblage, not observed in other meteorites.