Bob Grimm - Meteorite Parent Bodies

THERMAL, COLLISIONAL, AND HYDROGEOLOGICAL HISTORIES OF METEORITE PARENT BODIES

Research highlights. See Curriculum Vitae for citations. Numerical modeling of crystal settling suggested that cumulate textures of shergottites were consistent with accumulation within a body of large gravity, i.e., Mars (Grimm and McSween, 1983).

Inferred that collision and reassembly of metamorphically hot ordinary chondrite parent bodies could explain uncorrelated petrologic type vs. cooling rate (Grimm, 1985; Grimm et al., 2005).

Deterimined that ice incorporated into original carbonaceous chondrite parent bodies could have served as a thermal buffer, substituting low-temperature aqueous alteration for high-temperature recrystallization seen in ordinary chondrites. (Grimm and McSween, 1989; Jewitt et al.,2006).

Established that radial compositional zonation of the asteroid belt was likely due differences in accretion time and amount of live 26Al available to heat planetesimals (Grimm and McSween, 1993; McSween et al., 2002).