Physics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mai..rept.....b&link_type=abstract
Final Report, 2 Jan. 1987 - 30 Apr. 1992 McCrone Associates, Inc., Westmont, IL.
Physics
Electron Microscopy, Interplanetary Dust, Meteorites, Microanalysis, Micrometeorites, Microstructure, Petrography, Carbonaceous Chondrites, Comets, Infrared Spectroscopy, Silicates, Solar System
Scientific paper
The overall theme of the work was the identification of the sources and formation/aggregation mechanisms of the various classes of interplanetary dust particles (IDP's) and to clarify the relationship between IDP's and conventional meteorites. IDP's are believed to be derived from a much broader range of parent bodies than conventional meteorites. Some of these parent bodies (e.g., comets) have escaped that post accretional processing that has affected the parent bodies of meteorites. Therefore, IDP's are likely to preserve a record of early solar system and possibly presolar grain forming reactions. Using analytical electron microscopy (AEM) and more recently micro-infrared (IR) microspectroscopy to examine ultramicrotomed thin sections, we have addressed the questions of IDP formation mechanisms, sources, and their relationship to conventional meteorites. The following sections describe specific findings resulting from these studies.
Bradley John P.
Brooks Donald A.
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