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1 April 1993
Article Contents
Index Terms/Descriptors
- absolute age
- Carboniferous
- dates
- Devonian
- Dinantian
- Europe
- France
- French Pyrenees
- granites
- igneous rocks
- isotope ratios
- isotopes
- lead
- metals
- nesosilicates
- orthosilicates
- Paleozoic
- Pb-206/Pb-204
- Pb-207/Pb-206
- Pb-208/Pb-206
- plutonic rocks
- Pyrenees
- radioactive isotopes
- SEM data
- silicates
- stable isotopes
- U/Pb
- Upper Devonian
- Western Europe
- zircon
- zircon group
- southern France
- Ax-les-Thermes Granite
