Presence of hydrocarbon traces in igneous rock-forming minerals from the Colipilli area, central-western sector, Neuquén Basin, Argentina

SALVIOLI, M.A.; LAJOINIE, M.F.; LANFRANCHINI, M.E.; DE LA CAL, H.G.; CESARETTI, NORA

Malargüe

Conferencia; VI LASI 2019; 2019

THE PHYSICAL GEOLOGY OF SUBVOLCANIC SYSTEMS ? LACCOLITHS, SILLS AND DYKES COMITE

The Neuquén Basin, one of the most important hydrocarbon producing basins of Argentina, records an important tectono-magmatic activity mainly in the central-western region, between the Late Mesozoic and Early Cenozoic. In the Colipilli-Naunauco area, magmatic activity is represented by intrusive (Colipilli Fm., Llambías and Rapela, 1989) and extrusive facies (Cayanta Fm., Rapela andLlambías, 1985), both gathered in the Naunauco Group (Zamora Valcarce et al., 2006). This research deals with the identification and characterization ofhydrocarbon traces, trapped along with aqueous fluids, into fluid inclusions (FI) hosted in plagioclase and amphibole phenocrysts of the Colipilli Fm. intrusive bodies that crop out in the area.