scholarly journals Structure and anisotropy of the Mexico subduction zone based on Rayleigh-wave analysis and implications for the geometry of the Trans-Mexican Volcanic Belt

2012 ◽  
Vol 117 (B5) ◽  
pp. n/a-n/a ◽  
Author(s):  
I. Stubailo ◽  
C. Beghein ◽  
P. M. Davis
Keyword(s):  
Rayleigh Wave ◽  
Subduction Zone ◽  
Volcanic Belt ◽  
Wave Analysis ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

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

2012 ◽  
Vol 522-523 ◽  
pp. 122-149 ◽  
Author(s):  
Luca Ferrari ◽  
Teresa Orozco-Esquivel ◽  
Vlad Manea ◽  
Marina Manea
Keyword(s):  
Subduction Zone ◽  
Volcanic Belt ◽  
Mexican Volcanic Belt ◽  
History Of ◽  
Trans Mexican Volcanic Belt

Attenuation of modified Mercalli intensity with distance in Mexico

1988 ◽  
Vol 78 (6) ◽  
pp. 1875-1884
Author(s):  
Mario Chávez ◽  
Raul Castro
Keyword(s):  
Subduction Zone ◽  
Tectonic Setting ◽  
Volcanic Belt ◽  
Historical Earthquakes ◽  
Least Square ◽  
Attenuation Relations ◽  
South Central ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt ◽  
Fitting In

Abstract Two relations are proposed to predict the attenuation of Modified Mercalli Intensity (I) with distance (D) for Mexican earthquakes, i.e. ln I = B 0 + B 1 ln ( D / D ' ) + B 2 ( D − D ' ) + B 3 ln M s ln I = B 0 + B 1 ( D / D ' ) + B 2 ln ( D − D ' ) + B 3 ln M s Ms is the earthquake surface-wave magnitude, D′ is a distance related to the maximum I mapped for an earthquake, I′ or to Ms. The coefficients Bi, i = 0, 1, 2, 3 were obtained by fitting in a least-square sense the information contained in the intensity maps of 32 events to the relations. Those events were classified in three groups according to their epicentral location, focal mechanism, and depth, i.e., events related to the subduction-zone intermediate-depth earthquakes in south-central Mexico and to shallow crustal events along the Trans-Mexican Volcanic Belt. The I predicted by the proposed relations compare well with the I observed for historical earthquakes not included in the fitting. Results obtained from a parametrical study showed that the attenuation of I with D is different for each of the three types of earthquakes. For distances of less than about 200 km, the earthquakes associated with the subduction zone have a larger attenuation than the ones originating in the south-central region of Mexico; for greater distances (D > 200 km), the opposite behavior is observed. The events located in the Trans-Mexican Volcanic Belt have a larger attenuation with distance than that of events in the other two regions. From these results, it seems advisable in Mexico to use several attenuation relations to estimate the seismic hazard at a site, depending on the particular tectonic setting and the path of the events under consideration.

Geochemical and isotopic variability in lavas from the eastern Trans-Mexican Volcanic Belt: Slab detachment in a subduction zone with varying dip

Lithos ◽  
2007 ◽  
Vol 93 (1-2) ◽  
pp. 149-174 ◽  
Author(s):  
Teresa Orozco-Esquivel ◽  
Chiara M. Petrone ◽  
Luca Ferrari ◽  
Takahiro Tagami ◽  
Piero Manetti
Keyword(s):  
Subduction Zone ◽  
Volcanic Belt ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

scholarly journals Geochemical Evidence for Slab Melting in the Trans-Mexican Volcanic Belt

2006 ◽  
Vol 48 (3) ◽  
pp. 537-562 ◽  
Author(s):  
A. Gomez-Tuena ◽  
C. H. Langmuir ◽  
S. L. Goldstein ◽  
S. M. Straub ◽  
F. Ortega-Gutierrez
Keyword(s):  
Volcanic Belt ◽  
Slab Melting ◽  
Geochemical Evidence ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

scholarly journals Evidence for geomagnetic excursions recorded in Brunhes and Matuyama Chron lavas from the trans-Mexican volcanic belt

2013 ◽  
Vol 118 (6) ◽  
pp. 2648-2669 ◽  
Author(s):  
Daniel M. Michalk ◽  
Harald N. Böhnel ◽  
Norbert R. Nowaczyk ◽  
Gerardo J. Aguírre-Diaz ◽  
Margarita López-Martínez ◽  
...  
Keyword(s):  
Volcanic Belt ◽  
Matuyama Chron ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

Volcano-sedimentary processes at Las Derrumbadas rhyolitic twin domes, Serdán-Oriental basin, Eastern Trans-Mexican Volcanic Belt

2021 ◽  
pp. SP520-2021-144
Author(s):  
Marie-Noëlle Guilbaud ◽  
Corentin Chédeville ◽  
Ángel Nahir Molina-Guadarrama ◽  
Julio Cesar Pineda-Serrano ◽  
Claus Siebe
Keyword(s):  
Volcanic Belt ◽  
Debris Avalanche ◽  
Density Currents ◽  
Content Type ◽  
Mexican Volcanic Belt ◽  
Wide Range ◽  
Eruptive Episode ◽  
Basin Floor ◽  
Supplementary Material ◽  
Trans Mexican Volcanic Belt

AbstractThe eruption of the ∼10 km3 rhyolitic Las Derrumbadas twin domes about 2000 yrs ago has generated a wide range of volcano-sedimentary deposits in the Serdán-Oriental lacustrine basin, Trans-Mexican Volcanic Belt. Some of these deposits have been quarried, creating excellent exposures. In this paper we describe the domes and related products and interpret their mode of formation, reconstructing the main phases of the eruption as well as syn-and-post eruptive erosional processes. After an initial phreatomagmatic phase that built a tuff ring, the domes grew as an upheaved plug lifting a thick sedimentary pile from the basin floor. During uplift, the domes collapsed repeatedly to form a first-generation of hetero-lithologic hummocky debris avalanche deposits. Subsequent dome growth produced a thick talus and pyroclastic density currents. Later, the hydrothermally-altered over-steepened dome peaks fell to generate 2nd generation, mono-lithologic avalanches. Subsequently, small domes grew in the collapse scars. From the end of the main eruptive episode onwards, heavy rains remobilized parts of the dome carapaces and talus, depositing lahar aprons. Las Derrumbadas domes are still an important source of sediments in the basin, and ongoing mass-wasting processes are associated with hazards that should be assessed, given their potential impact on nearby populations.Supplementary material at https://doi.org/10.6084/m9.figshare.c.5752296

Late Cenozoic tectonics offshore western Mexico and its relation to the structure and volcanic activity in the western Trans-Mexican Volcanic Belt

1993 ◽  
Vol 32 (4) ◽  
pp. 543-559
Author(s):  
Hugo Delgado Granados
Keyword(s):  
Volcanic Activity ◽  
Volcanic Belt ◽  
Late Cenozoic ◽  
Western Mexico ◽  
Mexican Volcanic Belt ◽  
Cenozoic Tectonics ◽  
Trans Mexican Volcanic Belt

La tasa de convergencia calculada indica que la tectónica del occidente de México ha sido tensional durante los últimos 3 Ma. Este estilo de deformación se ve reflejado en la formación de estructuras rift en la parte occidental de la Faja Volcánica Trans-Mexicana [FVTM]. Los valores obtenidos para la tasa de convergencia predicen que, a través del tiempo, se verifica una tectónica menos tensional (con tendencia a la neutralidad) en la parte sureste de la zona de interacción de las placas de Rivera Y Norteamérica, mientras que en la parte noroccidental se vuelve más tensional. Por otra parte, un análisis cualitativo de las tasas de esparcimiento muestra que éstas fueron más rápidas antes de los 6.5 Ma de lo que fueron posteriormente. Después de analizar diferentes parámetros cinemáticos, se concluyó que la tasa de esparcimiento de la cresta del Pacífico Oriental en su sector Pacífico-Rivera, influye fuertemente sobre la tasa de convergencia. De esta manera se puede establecer una correlación positiva entre la evolución de la tasa de esparcimiento de la cresta Pacífico-Rivera y la geología continental. Esta correlación muestra que tasas de esparcimiento relativamente rápidas coinciden con la presencia de volcanismo monogenético calci-alcalino en la parte occidental de la FVTM cuando menos desde hace 10 Ma y que este tipo de volcanismo continúa hasta nuestros días. Sin embargo, cuando la tasa de esparcimiento se ha hecho más lenta (y por tanto la tasa de convergencia se ha hecho menor) durante el periodo comprendido entre 6.5 Ma y 3.5 Ma, se ha verificado en la región una tectónica extensional ampliamente distribuida, volcanismo explosivo y sedimentación lacustre en los sistemas rift de Colima, Tepic-Zacoalco y de Chapala; particularmente entre los 4.6 Ma y 3.9 Ma ha coincidido con volcanismo alcalino en los rifts fr Colima y Tepic-Zacoalco. Un leve incremento en la tasa de esparcimiento después de los 3.5 Ma coinciden con el decremento de actividad volcánica (principalmente alcalina). Durante el periodo entre 1.6 Ma y 0.7 Ma, la tasa de esparcimiento disminuyó de nuevo coincidiendo con un fallamiento normal continuo en las tres estructuras rift mencionadas y en parte, con otra etapa de volcanismo alcalino (entre 1.4 Ma y 0.2 Ma) en los rift de Colima y Tepic-Zacoalco. Después de los 0.7 Ma, la tasa de esparcimiento se ha incrementado levemente. Por otra parte, se observa una relación genética entre el contenido de elementos compatibles en rocas volcánicas de la región con la tasa de convergencia, lo cual implica que tasas de subducción mayores aportan una mayor cantidad de sedimentos acrecionados a la cuña del manto. Esto explica las diferencias geoquímicas entre las rocas volcánicas a lo largo del frente volcánico de la parte occidental de la FVTM.

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