2 documents found, page 1 of 1
Response to Comment on "U-Th dating of carbonate crusts reveals Neandertal orig...
Hoffmann, Dirk L.; Standish, C. D.; García-Diez, M.; Pettitt, P. B.; Milton, J. A.; Zilhão, João; Alcolea-González, J J; Cantalejo-Duarte, P.Slimak et al challenge the reliability of our oldest (>65,000 years) U-Th dates on carbonates associated with cave paintings in Spain. They cite a supposed lack of parietal art for the 25,000 years following this date, along with potential methodological issues relating to open-system behavior and corrections to detrital or source water 230Th. We show that their criticisms are unfounded.
Tourmaline occurrences within the Penamacor-Monsanto granitic pluton and host-r...
Costa, Isabel Ribeiro da; Mourão, C.; Récio, C.; Guimarães, Fernanda; Antunes, I. M.; Ramos, João Farinha; Barriga, Fernando; Palmer, Martin R.Tourmalinization associated with peraluminous granitic intrusions in metapelitic host-rocks has been widely recorded in the Iberian Peninsula, given the importance of tourmaline as a tracer of granite magma evolution and potential indicator of Sn-W mineralizations. In the Penamacor-Monsanto granite pluton (Central Eastern Portugal, Central Iberian Zone), tourmaline occurs: (1) as accessory phase in two-mica gra...