U-Pb isotopic ages and Hf isotope composition of zircons in Variscan gabbros from central Spain: Evidence of variable crustal contamination

1. Villaseca, C.
2. Orejana, D.
3. Belousova, E.
4. Armstrong, R.A.
5. Pérez-Soba, C.
6. Jeffries, T.E.