Resistivity Model for the Colima Volcanic Complex
39.000'-
30.000''
21.000'
BY
-103°57.000'
-103°48.000'
-103°39.000'
-103°30.000'
+
SM
JB
Tamazula Fault
CCG
SCG
VF
NV
NCG
0
5
MB
10 km
Quaternary Sediments
Cantaro Volcano Deposits
Colima Volcano Deposits
Tertiary Intrusives
Nevado Volcano Deposits
Alkaline Lavas
Paleofuego Debris, Avalanche
Deposits
Pumice And Ash Fall (Unkown Origin)
Collapse Escarpments
Fault Escarpments
Nevado and Volcan
Colima
Cretaceous Sandstones,
Limestones And Volcanics
Geology
The CVC lies in the westernmost part of the
TMVB which is the largest neogene volcanic
arc in North America with an area of 160,000
km2 (Ferrari et al. 2017) and a basement
composed mainly volcanic deposits and
marine sedimentary rocks. Particularly for the
CVC, the basement consists of carbonated
rocks and volcanic intrusives which are
overlain by Colima rift's sedimentary infill
sequences and the volcanic products of the
Volcan Cántaro, Nevado de Colima and
Volcan de Fuego, which form the CVC.
Two main structural features can be
evidenced; a north-south normal faulting that
delineates the north part of the rift, which
continuation along the central and south
parts it is not so clear, and an almost east-
west structure called Alseseca graben,
inferred to be constructed by the active
Tamazula fault, which played an important
role in the gravitational collapses of the CVC
to the south (Norini et al. 2010).
Figure 3. Geologic map taken and edited from the recapitulation made by Crummy (2013) after the works of Rodríguez-Elizarrarás (1995), Cortés
(2002,2005 and 2010) and Ferrari et al. (2017). NCG: North Colima Graben, CCG: Central Colima Graben, SCG: South Colima Graben, RA: Armería
River, NR: Naranjo River, SM: Manantlan Mountain Range, JB: Jalisco Block, MB: Michoacán Block, VF: Volcan de Fuego, NC: Nevado de Colima,³
Blue dots are MT soundings and thin blue lines are MT profiles.View entire presentation