Primordial Pb, radiogenic Pb and lunar soil maturationPb-204 is directly correlated with the reduced Fe measured by ferromagnetic resonance. A similar correlation has been noted for hydrolyzable carbon (Pillinger et al., 1974). An enrichment of these elements appears to have occurred during soil maturation. In contrast to Pb-204, radiogenic Pb is reported to be lost during soil maturation (Church et al., 1976). Radiogenic Pb is present in mineral grains and may be lost by solar wind sputtering (or volatilization) and not resupplied. Pb-204 coating grain surfaces acts as a reservoir to provide the Pb-204 being extracted in the reduced Fe formation process. Venting or some other volatile release mechanism may replenish the surface-related Pb-204.
Document ID
19790055210
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Reed, G. W., Jr. (Argonne National Lab. IL, United States)
Jovanovic, S. (Argonne National Laboratory Argonne, Ill., United States)