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Main-group pallasites: Thermal history, relationship to IIIAB irons, and origin
We have determined metallographic cooling rates below 975 K for eight main group (MG) pallasites from Ni profiles across taenite lamellae of known crystallographic orientation in metallic regionsExpand
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Mineralogical and chemical modification of components in CV3 chondrites: Nebular or asteroidal processing?
— Calcium- and aluminum-rich inclusions (CAIs), chondrules, dark inclusions and matrices in certain CV3 carbonaceous chondrites appear to have been modified by different degrees of late-stageExpand
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Iron meteorites: Crystallization, thermal history, parent bodies, and origin
We review the crystallization of the iron meteorite chemical groups, the thermal history of the irons as revealed by the metallographic cooling rates, the ages of the iron meteorites and theirExpand
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Oxygen isotopic constraints on the origin and parent bodies of eucrites, diogenites, and howardites
Abstract A few eucrites have anomalous oxygen isotopic compositions. To help understand their origin and identify additional samples, we have analyzed the oxygen isotopic compositions of 18 eucritesExpand
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Dating the Moon-forming impact event with asteroidal meteorites
Traces of collisions within collisions The Moon is widely accepted to have been created by the collision of a Mars-sized body with Earth. However, information about exactly when this event occurredExpand
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Thermal histories of IVA stony-iron and iron meteorites: Evidence for asteroid fragmentation and reaccretion
We have investigated the thermal history of the IVA iron and stony-iron meteorites to help resolve the apparent conflict between their metallographic cooling rates, which are highly diverse, andExpand
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Abstract Analyses of olivines and low-Ca pyroxenes in a suite of porphyritic chondrules of types IA and II in each of ten CO3 chondrites and comparisons with similar chondrules in LL chondritesExpand
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Meteoritic, Asteroidal, and Theoretical Constraints on the 500 Ma Disruption of theLChondrite Parent Body
The high abundance of heavily shocked and degassedLchondrites with Ar–Ar ages around 500 Myr shows that theLchondrite parent body suffered a major impact 500 Myr ago. We infer from constraints on theExpand
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