Abstract

CASTRO GODOY, Silvia; ETCHEVERRIA, Mariela  and  GODEAS, Marta. Identification of altered metabasalts from ASTER data. Rev. Asoc. Geol. Argent. [online]. 2010, vol.66, n.4, pp.565-568. ISSN 0004-4822.

ASTER data allowed developing a simple methodology, using the Short Wave Infrared spectral bands (SWIR), in order to detect alteration minerals that affect igneous bodies and have spectral differences with the country rock. As an example chloritic alteration was detected in metabasalts interbedded in metasediments of Puntilla de Uspallata Formation, Precordillera Mendocina.

Keywords : Remote sensing; Planetary reflectance; SWIR; Igneous bodies; Precordillera mendocina.

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