Scanning electron microscope study of Apollo 15 green glassApollo 15 green glass droplets and related forms show a variety of low velocity impact features which occurred at the time of formation of the droplets. Composite forms, which consist of a crystallized core on which mounds of glass adhere, indicate a sequence of core formation and crystallization, followed by impact of molten droplets. The complicated and time dependent texture and morphology of the green glass forms are best explained by formation in a volcanic lava fountain rather than by meteorite impact.
Document ID
19740040071
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Mckay, D. S.
Clanton, U. S. (NASA Johnson Space Center Houston, Tex., United States)
Ladle, G. (Lockheed Electronics Co., Inc. Houston, Tex., United States)