INVESTIGADORES
CAFFE pablo Jorge
artículos
Título:
The Cerro Bitiche Andesitic Field: Petrological diversity and implications for magmatic evolution of mafic volcanic centers from the northern Puna.
Autor/es:
MARO, G. .; CAFFE, P.J.
Revista:
BULLETIN OF VOLCANOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2016 vol. 78 p. 1 - 18
ISSN:
0258-8900
Resumen:
The Cerro Bitiche Andesitic Field (CBAF) is one ofthe two largest mafic volcanic fields in northern Puna (22?24°S) and is spatially and temporally associated with ignimbriteserupted from some central Andean Altiplano-Puna VolcanicComplex calderas. The CBAF comprises seven scoria conesand widespread high-K calcalkaline lava flows that cover anarea of 200 km2. Although all erupted rocks have a relativelynarrow chemical range (56?62 % SiO2, 3?6 % MgO), there isa broad diversity of mineral compositions and textures. Theleast evolved lavas (∼58?61 % SiO2) are high-Mg andesiteswith scarce (