Resistivity Model for the Colima Volcanic Complex
Study area and its dynamic context
32°0'N
-114°0'W
-108°0'W
-102°0'W
-96°0'W
-90°0'W
N Michoacán Block
CVC
Colima Rift
Jalisco Block
24°0'N
GULF OF
CALIFORNIA
PACIFIC
OCEAN
Rivera
Microplate
Guadalajara City-
MVB
Mexico City
16°0'N
GULF OF
MEXICO
N
A. Mantle Flow
Cocos Plate
Figure 2
Mesoamerican
Trench
Rivera Plate
A. Mantle
Toroidal
Mantle Flow
500
1000 km
COCOS
PLATE
Figure 1
Transform Fault
-
Oceanic dorsal
Mexican Volcanic Belt
Main Cities
Colima Volcanic Complex
Mesoamerican Trench
The Colima Volcanic Complex (CVC) is located in the occidental part of
Mexico, within the westernmost side of the so called Trans-Mexican
Volcanic Belt (TMVB). The CVC structure is 120 km far from the
Mesoamerican Trench, 80 km from the Pacific Coast and 100 km south of
Guadalajara City.
Two oceanic plates; Rivera and Cocos, converge obliquely
and with different slab angles to the North American
continental plate. From seismic tomography (Yang et al.
2009) has been inferred that a slab window ocurrs at 150
km depth, just beneath north and central Colima Rift, that
allows a flow of asthenospheric mantle to the mantle
wedge enabling the crust to melt. This coincides with the
volcanism in the CVC, which is north-south migrating/old-
young aging.
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