The dynamic history of the Trans-Mexican Volcanic Belt and the Mexico subduction zone

Ferrari, Luca; Orozco-Esquivel, Teresa; Manea, Vlad Constantin; Manea, Marina

doi:10.1016/j.tecto.2011.09.018

Cited by 578 publications

(519 citation statements)

References 180 publications

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“…This interpretation is consistent with Bernal-López et al (2016). They proposed that the different orientation of the fast axes between the southern and northern ends of the MASE deployment can be explained because the TMVB is not subparallel to the MAT (Gil 1981;Suárez & Singh 1986;Ferrari et al 2012). It is important to take into account that due to the low resolution achieved by RFs in extremely dipping layers, it was not possible to quantify and remove the anisotropy contribution of the subducting plate beneath the mantle wedge.…”

Section: Upper Mantlesupporting

confidence: 58%

“…5), anisotropy is most likely associated with open cracks, volcanic vent alignment and the dominant trend of faulting. The main tendency of the fast azimuth directions inside this region display a parallelism with the general direction of the Neogene extensional faulting, which has an ENE-WSW and E-W preferred orientation (Ferrari et al 2012). Also, a comparison with numerous other studies along the MASE array suggests that the existence of fluids and partial melts generated by the subduction process play an important role in the increased observed shear wave splitting (Fig.…”

Section: Continental Crustmentioning

confidence: 57%

“…Brown triangles show location of active volcanoes. Slab isodepth contours are from the compilation by Ferrari et al (2012). Main cities along the array are marked with red circles.…”

mentioning

confidence: 99%

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Crust and upper-mantle seismic anisotropy variations from the coast to inland in central and Southern Mexico

Ramírez‐Castellanos

Pérez‐Campos²,

Valenzuela³

et al. 2017

Geophysical Journal International

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S U M M A R YSubduction zones are among the most dynamic tectonic environments on Earth. Deformation mechanisms of various scales produce networks of oriented structures and faulting systems that result in a highly anisotropic medium for seismic wave propagation. In this study, we combine shear wave splitting inferred from receiver functions and the results from a previous SKS-wave study to quantify and constrain the vertically averaged shear wave splitting at different depths along the 100-station MesoAmerican Subduction Experiment array. This produces a transect that runs perpendicular to the trench across the flat slab portion of the subduction zone below central and southern Mexico. Strong anisotropy in the continental crust is found below the Trans-Mexican Volcanic Belt (TMVB) and above the source region of slow-slip events. We interpret this as the result of fluid/melt ascent. The upper oceanic crust and the overlying lowvelocity zone exhibit highly complex anisotropy, while the oceanic lower crust is relatively homogeneous. Regions of strong oceanic crust anisotropy correlate with previously found low V p /V s regions, indicating that the relatively high V s is an anisotropic effect. Upper-mantle anisotropy in the southern part of the array is in trench-perpendicular direction, consistent with the alignment of type-A olivine and with entrained subslab flow. The fast polarization direction of mantle anisotropy changes to N-S in the north, likely reflecting mantle wedge corner flow perpendicular to the TMVB.

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Section: Upper Mantlesupporting

confidence: 58%

Section: Continental Crustmentioning

confidence: 57%

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Crust and upper-mantle seismic anisotropy variations from the coast to inland in central and Southern Mexico

Ramírez‐Castellanos

Pérez‐Campos²,

Valenzuela³

et al. 2017

Geophysical Journal International

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“…The tomography also showed the steep slab which continues down to a depth of $ 500 km at a distance of 400 km from the trench (Husker and Davis, 2009). These seismic images of the steep slab beneath the arc support the slab rollback mode of the Cocos plate in central Mexico, which is also evidenced by the southeastward migration of TMVB volcanism since $ 20 Ma (Ferrari, 2004;Ferrari et al, 2011). In addition, an eastward migration pulse of magmatism originating beneath the Gulf of California at the time of the formation of Rivera Plate truncated the slab so that it only extends to 500 km depth today (Ferrari, 2004).…”

Section: Geometries Of the Subducted Cocos Oceanic Crust In Mexicosupporting

confidence: 56%

Distribution of hydrous minerals in the subduction system beneath Mexico

Kim

Clayton

Jackson

2012

Earth and Planetary Science Letters

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited.

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“…The MVB is related to the subduction of the Rivera and Cocos plates below the continental North American plate (Singh et al, 2007;Ferrari et al, 2012). In general, the regional tectonics in the MVB have shown to be of extensional type with the minimum compressive stress in the north-south direction (Suter et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

On the behavior of site effects in central Mexico (the Mexican volcanic belt – MVB), based on records of shallow earthquakes that occurred in the zone between 1998 and 2011

Clemente-Chavez¹,

Zúñiga²,

Lermo³

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. The Mexican volcanic belt (MVB) is a seismogenic zone that transects the central part of Mexico with an east-west orientation. The seismic risk and hazard of this seismogenic zone has not been studied in detail due to the scarcity of instrumental data as well as because seismicity in the continental regime of central Mexico is not too frequent. However, it is known that there are precedents of large earthquakes (M w > 6.0) that have taken place in this zone. The valley of Mexico City (VM) is the sole zone, within the MVB, that has been studied in detail. Studies have mainly focused on the ground amplification during large events such as the 1985 subduction earthquake that occurred off coast of Michoacán. The purpose of this article is to analyze the behavior of site effects in the MVB zone based on records of shallow earthquakes (data not reported before) that occurred in the zone between 1998 and 2011. We present a general overview of site effects in the MVB, a classification of the stations in order to reduce the uncertainty in the data when obtaining attenuation parameters in future works, as well as some comparisons between the information presented here and that presented in previous studies.A regional evaluation of site effects and Fourier acceleration spectrum (FAS) shape was estimated based on 80 records of 22 shallow earthquakes within the MVB zone. Data of 25 stations were analyzed. Site effects were estimated by using the horizontal-to-vertical spectral ratio (HVSR) methodology. The results show that seismic waves are less amplified in the northeast sites of the MVB with respect to the rest of the zone and that it is possible to classify two groups of stations: (1) stations with negligible site amplification (NSA) and (2) stations with significant site amplification (SSA). Most of the sites in the first group showed small (< 3) amplifications while the second group showed amplifications ranging from 4 to 6.5 at frequencies of about 0.35, 0.75, 15 and 23 Hz. With these groups of stations, average levels of amplification were contrasted for the first time with those caused by the subduction zone earthquakes. With respect to the FAS shapes, most of them showed similarities at similar epicentral distances. Finally, some variations of site effects were found when compared to those obtained in previous studies on different seismicity regions. These variations were attributed to the location of the source.These aspects help to advance the understanding about the amplification behavior and of the expected seismic risk on central Mexico due to large earthquakes within the MVB seismogenic zone.

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The dynamic history of the Trans-Mexican Volcanic Belt and the Mexico subduction zone

Cited by 578 publications

References 180 publications

Crust and upper-mantle seismic anisotropy variations from the coast to inland in central and Southern Mexico

Crust and upper-mantle seismic anisotropy variations from the coast to inland in central and Southern Mexico

Distribution of hydrous minerals in the subduction system beneath Mexico

On the behavior of site effects in central Mexico (the Mexican volcanic belt – MVB), based on records of shallow earthquakes that occurred in the zone between 1998 and 2011

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