Microbeam analyses of stratospheric particles

Mackinnon, Ian D.R., Rietmeijer, Frans J.M., McKay, David S., & Zolensky, Michael E. (1985) Microbeam analyses of stratospheric particles. In Armstrong, John T. (Ed.) Microbeam Analysis - 1985, San Francisco Press Inc, pp. 291-297.

Abstract

Collections of solid particles from the Earth's stratosphere by high-flying aircraft have been reported since 1965, with the initial primary objective of understanding the nature of the aerosol layer that occurs in the lower stratosphere. With the advent of efficient collection procedures and sophisticated electron- and ion-beam techniques, the primary aim of current stratospheric collections has been to study specific particle types that are extraterrestrial in origin and have survived atmospheric entry processes. The collection program provided by NASA at Johnson Space Center (JSC) has conducted many flights over the past 4 years and retrieved a total of 99 collection surfaces (flags) suitable for detailed study. Most of these collections are part of dedicated flights and have occurred during volcanically quiescent periods, although solid particles from the El Chichon eruptions have also been collected. Over 800 individual particles (or representative samples from larger aggregates) have been picked from these flags, examined in a preliminary fashion by SEM and EDS, and cataloged in a manner suitable for selection and study by the wider scientific community.

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ID Code: 57743
Item Type: Conference Paper
Refereed: Yes
Keywords: stratospheric dust collection, interplanetary dust particles, analytical electron microscopy, volcanic ash, extraterrestrial mineralogy
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Tropospheric and Stratospheric Physics (040108)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Sciences not elsewhere classified (040199)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > GEOLOGY (040300) > Extraterrestrial Geology (040302)
Divisions: Current > Institutes > Institute for Future Environments
Copyright Owner: Copyright 1985 San Francisco Press Inc
Deposited On: 11 Mar 2013 01:31
Last Modified: 11 Mar 2013 01:31

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