In this field campaign 59 samples of volcanic and subvolcanic rocks were
collected. Ten of these samples were analyzed via ICP at the Department of
Geology, U. de Chile. The samples are subalkaline ...
During this campaign, 50 volcanic and subvolcanic rock samples were collected,
which were described petrographically. In general they are porphyritic rocks
composed of phenocrysts of plagioclase, ...