Petrogenetic modeling of 74220 high-Ti orange volcanic glasses and the Apollo 11 and 17 high-Ti mare basaltsAn INAA analysis of 16 individual spherules of orange volcanic glass extracted from the 74220,680 soil was performed in order to determine trace element signatures in a primary high-Ti mare magma. The composition of these glasses is shown to be nearly identical to that of 74220 bulk soil, indicating a general absence of constituents other than volcanic glass in the soil. The results suggest that the evolving lunar mantle included processes of cumulate-mass transport and/or segregation of the primordial lunar magma ocean into separate differentiating zones, allowing commingling of early and late components.
Document ID
19890049129
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hughes, S. S. (Oregon State Univ. Corvallis, OR, United States)
Schmitt, R. A. (Oregon State University Corvallis, United States)
Delano, J. W. (New York, State University Albany, United States)