InSAR observations between 1992 and 2010 showed that Cordon Blanco was subsiding at a constant rate with a maximum rate of 1 cm/year (Henderson and Pritchard, 2013). The subsidence was well fit by volume loss from a Mogi point source at 10 km depth, and the authors suggested deformation may have been due to solidification of cooling magma,  removal of hydrothermal fluids followed by compaction, or lateral migration of hydrothermal fluids from the section of crust overlaying deeper crystallizing melt (Henderson and Pritchard, 2013).