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The origin of geochemical diversity of lunar mantle sources inferred from the combined UPb, RbSr, and
 

Summary: The origin of geochemical diversity of lunar mantle
sources inferred from the combined UPb, RbSr, and
SmNd isotope systematics of mare basalt 10017
Amy M. Gaffney a,*, Lars E. Borg a,1
, Yemane Asmerom b
a
Institute of Meteoritics, University of New Mexico, Albuquerque, NM 87131, USA
b
Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, USA
Received 20 April 2006; accepted in revised form 4 May 2007; available online 17 May 2007
Abstract
The results of our combined UPb, RbSr, and SmNd isotope study of mare basalt 10017 contribute to the understanding
of the petrogenetic processes involved in the origin of geochemical diversity in lunar mare basalt sources, as well as the UPb
isotope systematics of the Moon. The RbSr, SmNd, and 238
U206
Pb isotope systems yield concordant crystallization ages of
3.633 0.057 Ga, 3.678 0.069 Ga, and 3.616 0.098 Ga, respectively. The 235
U207
Pb isochron yields an older, though still
concordant, age of 3.80 0.12 Ga. Neither the 206

  

Source: Asmerom, Yemane - Department of Earth and Planetary Sciences, University of New Mexico

 

Collections: Geosciences