|
Anatomy of an isotopically primitive
interplanetary dust particle: Coordinated NanoSIMS and Auger
Nanoprobe analyses.
Floss C., Stadermann F. J., Mertz A., and Bernatowicz T.
(2007)
Lunar Planet. Sci. XXXVIII, Abstract #1145.
ABSTRACT
Interplanetary dust particles (IDPs) are complex
assemblages of primitive solar system materials that carry
abundant extra-solar phases. Our recent work shows that
circumstellar and interstellar phases are concentrated in a
subgroup of IDPs with anomalous bulk N isotopic compositions
that are isotopically primitive. In order to better
understand the internal structures and isotopic
heterogeneities of such particles, we prepared sliced
sections of several IDPs for NanoSIMS and Auger Nanoprobe
analysis. Here we report the results of measurements on two
samples, one of which belongs to the isotopically primitive
subgroup of IDPs.
|