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Volcanic ash - Terrestrial versus extraterrestrialA principal difference between terrestrial and extraterrestrial lavas may consist in the greater ability of terrestrial lavas to form thin films (like those of soap bubbles) and hence foams. It would follow that, in place of the pumice and spiny shards found in terrestrial volcanic ash, an extraterrestrial ash should contain minute spherules. This hypothesis may help to explain lunar microspherules.
Document ID
19760062879
Document Type
Reprint (Version printed in journal)
Authors
Okeefe, J. A. (NASA Goddard Space Flight Center Theoretical Studies Group, Greenbelt, Md., United States)
Date Acquired
August 8, 2013
Publication Date
October 8, 1976
Publication Information
Publication: Science
Volume: 194
Subject Category
GEOSCIENCES (GENERAL)
Distribution Limits
Public
Copyright
Other