Arizona1
Cenozoic1
Holocene1
La Isabela1
Nevada1
New Mexico1
Pb-206/Pb-2041
Pb-207/Pb-2041
Pb-208/Pb-2041
Quaternary1
Southwestern U.S.1
Sr-87/Sr-861
United States1
alkaline earth metals1
archaeological science1
gems1
geochemistry1
historical metallurgy1
isotope geochemistry1
isotope ratios1