Page 188 - Caldera Volcanism Analysis, Modelling and Response
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The Sierra Madre Occidental, Mexico 163
Figure 12 Digital elevation models of the grabens at the SWsector of the SMO. (a) Plan view;
the graben are:Va,Valparaiso; Je, Jerez;Vi,Villanueva; B, Bolan ì os;T,Tlaltenango; J, Juchipila;
Ta,Tabasco; C, Calvillo; M, Malpaso; A, Aguascalientes. (b) 3D model of area shown in (a),
indicating also the area covered in Figure13a.The deepest graben is Bolan ì os in the segment
between 21.21 and 221 Lat. N.This deep segment corresponds to the graben caldera of
Bolan ì os.