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Geofísica internacional
versão On-line ISSN 2954-436Xversão impressa ISSN 0016-7169
Resumo
LOPEZ-LOERA, Héctor. 2 ¾ dimension modeling of the aeromagnetic anomaly of Volcán de Colima, western Mexico. Geofís. Intl [online]. 2012, vol.51, n.2, pp.129-142. ISSN 2954-436X.
Results of 2 ¾ D modeling of the aeromagnetic anomaly of Volcán de Colima, in the southern sector of the Colima Volcanic Complex are presented. The structural model documents the presence of a magma chamber with an elongated shape and a length greater than 10 km in a north-south direction extending over 6.6 km south of Volcán de Colima. The maximum thickness of the magma chamber, around 6.9 km, is located to the ESE of the volcano. The edges of the magma chamber have thicknesses ranging from 820 m to 620 m to the south and north, respectively. The magma chamber under Volcán de Colima is located at depths of 4.9 and 1.2 km below sea level. The geophysical model is consistent with a proposed north-south migration of activity in the Colima Volcanic Complex.
Palavras-chave : Volcán de Colima; magnetic anomaly; magnetic model; magmatic chamber; magnetism.