ASTR object containing lead isotope data along with "Political province/regions" as a grouping variable.
Format
ASTR object with 1 contextual and 3 Pb Isotope variables
- Political province/regions
Regional grouping of lead isotope data.
- 206Pb/204Pb
Lead isotope ratio of 206Pb/204Pb.
- 207Pb/204Pb
Lead isotope ratio of 207Pb/204Pb.
- 208Pb/204Pb
Lead isotope ratio of 208Pb/204Pb.