Geocronologia Ar-Ar de flogopitas del "stock" de Aguablanca (Badajoz)implicaciones sobre la edad del plutón y de la mineralización de Ni-(Cu) asociada
- F. Tornos
- A. Iriondo
- C. Casquet
- C. Galindo
ISSN: 1576-5172
Year of publication: 2004
Issue Title: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)
Issue: 6
Pages: 189-192
Type: Article
More publications in: Geotemas (Madrid)
Abstract
Ar-Ar dating of intercumulus phlogopite for both a websterite fragment within the mineralized breccia pipe of the Ni-(Cu) Aguablanca magmatic deposit; and the host gabbronorite has yielded ages of 335±2 to 338±3 Ma, i.e., Visean (Mississippian). These values are within error and suggest that the mineralization and the host rock are Variscan in age. Moreover this age is compatible with a previous model which interprets the sulfide mineralization as intrusive (vertical pipe) into the Aguablanca gabbronorites.