2 3/4 dimension modeling of the aeromagnetic anomaly of Volcan de Colima, western Mexico
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Abstract
Results of 2 3f4 D modeling of the aeromagnetic anomaly of Volcan 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 northsouth direction extending over 6.6 km south of Volcan 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 820m to 620m to the south and north, respectively. The magma chamber under Volcan 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.
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