scholarly journals Tree rings as indicators of climatic variation in the Trans-Mexican Volcanic Belt, central Mexico

2021 ◽  
Vol 120 ◽  
pp. 106920
Author(s):  
Teodoro Carlón Allende ◽  
José Villanueva Díaz ◽  
Gisela Soto Castro ◽  
Manuel E. Mendoza ◽  
José Luis Macías
Keyword(s):  
Tree Rings ◽  
Volcanic Belt ◽  
Climatic Variation ◽  
Central Mexico ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

The Historical Seismicity of the Puebla-Tlaxcala Region (Trans-Mexican Volcanic Belt) during Early Novohispanic Times (A.D. 1542–1740) and the Structure of the Tlaxcala-Huamantla Half-Graben

2021 ◽  
Author(s):  
Max Suter
Keyword(s):  
Volcanic Belt ◽  
Fault System ◽  
Central Mexico ◽  
Earthquake Catalog ◽  
Induced Earthquakes ◽  
Historical Sources ◽  
Earthquake Intensity ◽  
Mexican Volcanic Belt ◽  
Half Graben ◽  
Trans Mexican Volcanic Belt

Abstract This article documents earthquake intensity observations during early novohispanic times (A.D. 1542–1740) in the Puebla-Tlaxcala region (central Mexico), mostly based on Nahuatl-language historical annals and chronicles, and includes (as a supplement) a descriptive earthquake catalog for this period. Although it is difficult to assign intensities from fragmentary accounts, the largest shocks (A.D. 1582 and 1711) caused damage through the entire region. Earthquake ground shaking in the study area, located within the active volcanic arc crossing central Mexico, can result from intraslab normal faulting in the subducted Cocos plate, subduction interface thrust earthquakes, motion on the faults of the intra-arc Tlaxcala-Huamantla half-graben, as well as extension accommodated through magmatic injection. Most of the historical sources describe earthquakes felt only locally and sometimes report prolonged sequences of shocks, which is indicative of magmatic dike-induced earthquakes or else resulted from motion on the faults of the Tlaxcala-Huamantla half-graben. This structure, ∼70 km long and 15–20 km wide, is the only major tectonic depression in the eastern part of the trans-Mexican volcanic belt. It is filled by a volcano-sedimentary sequence, up to 400 m thick, of unknown but likely Pliocene age. The half-graben is bound in the north by an east–west-striking and south-dipping normal fault system, which is morphologically most pronounced near the town of Tlaxcala where the footwall uplift reaches a maximum of 350 m. The fault array is likely to be active; it vertically displaces Quaternary Totolqueme volcano.

Potential distribution of the endemic imbricate alligator lizard (Barisia imbricata imbricata) in highlands of central Mexico

2017 ◽  
Vol 38 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Armando Sunny ◽  
Andrea González-Fernández ◽  
Maristella D’Addario
Keyword(s):  
Potential Distribution ◽  
Extinction Risk ◽  
Volcanic Belt ◽  
Maximum Temperature ◽  
Central Mexico ◽  
Natural Protected Areas ◽  
Crop Fields ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

Barisia imbricata imbricata is an endemic anguid lizard living in the highlands of central Mexico, mainly in the Trans-Mexican Volcanic Belt, but its current distribution is not well defined. For this reason, it is critical to make a systematic study in order to determine the potential distribution of this subspecies. We considered 13 environmental and anthropogenic variables recognized to be important to determine the presence of B. i. imbricata; we also used eight presence-only modeling methods and selected three to generate an ensemble model. The Maxent algorithm was used to obtain the most important variables. The variables with highest contribution to the model were: maximum temperature of the warmest month, altitude, Abies forest and Pinus forest. From the estimated potential distribution (9614.1 km2), 8053.4 km2 (83.8%) are located in the Trans-Mexican Volcanic Belt, 3821.4 km2 (39.7%) are located in natural protected areas and 2418.2 km2 (25.2%) are in crop fields. The whole potential distribution is highly fragmented and characterized by the presence of human activities, which could have long-term consequences, increasing extinction risk.

Rift propagation vs inherited crustal fabrics in the Trans-Mexican Volcanic Belt (Mexico): insights into geothermal investigations from analogue models

2020 ◽  
Author(s):  
Daniele Maestrelli ◽  
Marco Bonini ◽  
Giacomo Corti ◽  
Domenico Montanari ◽  
Giovanna Moratti
Keyword(s):  
Large Scale ◽  
Volcanic Belt ◽  
Central Mexico ◽  
Horizon 2020 ◽  
Sand Mixture ◽  
Continental Scale ◽  
The North ◽  
Rift Propagation ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

<p>The Trans-Mexican Volcanic Belt (TMVB) is a large-scale, NW to SE trending volcano-tectonic feature extending through central Mexico for a length of more than 1000 km. In some models, its genesis is related to the interaction between the subducting Rivera and Cocos plates and the North America plate, with the eastward propagation of volcanism being associated with slab detachment and consequent asthenospheric upwelling (e.g., Ferrari, 2004). Progressive SE-directed slab tearing has been causing crustal extension and the emplacement of large-scale volcano and caldera edifices. In the frame of the GEMex Europe-Mexico cooperation project (Horizon 2020 Programme, grant agreement No. 727550), we aim to investigate the interplay between continental extension and inherited crustal fabrics. Particularly, in the easternmost part of the TMVB, where the GEMex Project is focusing geothermal investigation on two calderas (Los Humeros and Acoculco), the inherited fabric is represented by ca. NE-SW and NW-SE regional faults (Campos-Enriquez & Garduño-Monroy, 1987). This fabric may have localized volcanic centres, thereby bearing significant implications for geothermal investigation. We aim to evaluate if and how the inherited structures may have interacted with continental-scale rift propagation through analogue modelling. In the models, the upper continental crust was simulated by a Qz- and K-feldspar sand mixture (80%-20% proportion in weight), while a PDMS-corundum mixture reproduced the lower crust. Continental rift propagation was simulated using a deformation apparatus represented by two basal moving plates hinged at their topmost side, allowing rotational opening. Extensional deformation was distributed using a basal rubber sheet. Artificial dilation zones (simulating the inherited fabrics) have been introduced within the analogue brittle crust at various angles to the rift axis. Our modelling highlights that a propagating rift may reactivate the inherited fabrics as extensional structures or transfer zones (depending on their orientation) for angles ≤45° to the rift axis. Numerical analysis of slip and dilation tendency evaluated for the reactivated fabrics corroborate the modelling results, and suggest that they may represent favourable sites for magma emplacement, and ultimately for geothermal exploration.</p><p>Campos-Enriquez, J., & Garduño-Monroy, V. H. (1987). The shallow structure of Los Humeros and Las Derrumbadas geothermal fields, Mexico. Geothermics, 16(5-6), 539-554.</p><p>Ferrari, L. (2004). Slab detachment control on mafic volcanic pulse and mantle heterogeneity in central Mexico. Geology, 32(1), 77-80.</p>

scholarly journals MAMÍFEROS DE GUERRERO

2017 ◽  
Vol 1 (2) ◽  
pp. 38
Author(s):  
Deborah V. Espinosa-Martínez ◽  
César A. Ríos-Muñoz ◽  
Hiram Rosales Nanduca ◽  
Joaquín Arroyo-Cabrales ◽  
Livia León-Paniagua
Keyword(s):  
Volcanic Belt ◽  
The State ◽  
Central Mexico ◽  
Mammal Fauna ◽  
West Central ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt

ResumenEl estado de Guerrero se encuentra ubicado en el centro poniente de México, al sur del Eje Volcánico Transversal. Con objeto de actualizar el conocimiento de los mamíferos nativos del estado, se revisó la literatura disponible en referencia a dichos animales que h an sido registrados en el territorio estatal, encontrando que la mayor parte de los estudios se han realizado en los últimos 60 años. Diez órdenes, 29 familias (72.5% del total nacional), 105 géneros (58.01%) y 154especies (28.79%) de mamíferos, de las cuales 50 son monotípicas y 104 politípicas; 35 especies son endémicas al país y tres al estado. Los órdenes mejor representados son Chiroptera (66 especies), Rodentia (36), Carnivora (20) y Cetacea (17); con 31 taxones des critos con base en ejemplares procedentes del estado. En cuanto a la distribución de las especies, ha y una mayor presencia de especies terrestres con afinidad Mesoamericana (70) que Neotropical (36) o Neártica (31), mientras que dentro de las especies del orden Cetacea, 13 son de afinidad Tropical y cuatroAntitropical. Se han registrado al menos 40 especies en algún listado de conservación nacional o internacional. Se considera que una especie ha replegado su distribución actual o que fue extirpada del estado. Dos especies de pinnípedos han sido registradas una única vez por lo que han sido consideradas en este trabajo como registros de ocurrencia extralimital.Palabras clave: centro poniente de México, conservación, distribución, diversidad, mastofauna.AbstractThe state of Guerrero is located in West Central México, south from the Trans-Mexican Volcanic Belt. In order to learn about the current native mammals from the state, available literature of mammal records in the state was reviewed, finding that most studies have b een carried out in the last 60 years. Ten orders, 29 families (72.5% national wide), 105 genera (58.01%), and 154 species(28.79%), including 50 monotypic and 104 politypic; 35 species are endemics to the country and three to the state. The most diverse orders are Chiroptera (66 species), Rodentia (36), Carnivora (20), and Cetacea (17); 31 taxa were described based on specimens collected in the state. In regard to the species distributional affinities, most terrestrial are Mesoamerican (70), then Neotropical (36) and Nearctic (31), while for the Order Cetacea there are 13 Tropical and four Antitr opical. There are at least 40 species recorded on national or international conservation lists. Only one species has reduced its distribution or has been extirpated from the state and, two species of pinnipeds have been registered only once, in this paper we have considered them as outliers.Key words: conservation, distribution, diversity, mammal fauna, West Central México.

Six new epigean species of Caecidotea (Isopoda: Asellidae) distributed along the Trans-Mexican Volcanic Belt in Central Mexico

Zootaxa ◽  
2021 ◽  
Vol 4965 (1) ◽  
pp. 45-77
Author(s):  
LEONARDO GARCÍA-VÁZQUEZ ◽  
CARLOS PEDRAZA-LARA ◽  
GABINO RODRÍGUEZ-ALMARAZ
Keyword(s):  
North America ◽  
Volcanic Belt ◽  
Central Mexico ◽  
Freshwater Species ◽  
Eastern Slope ◽  
Additional Species ◽  
Taxonomic Treatment ◽  
Mexican Volcanic Belt ◽  
Trans Mexican Volcanic Belt ◽  
Diagnostic Importance

Six new epigean freshwater species of the genus Caecidotea in Mexico are described. These species were collected in waterbodies located along the Trans-Mexican Volcanic Belt (TMVB) and the eastern slope of the country: Caecidotea buzwilsoni sp. nov., Caecidotea chicoensis sp. nov., Caecidotea alvarezi sp. nov., Caecidotea mintzita sp. nov., Caecidotea zacapuensis sp. nov., and one additional species Caecidotea villalobosi sp. nov. is described from the Papaloapan basin at the Atlantic Slope of Mexico. The taxonomic treatment for each species includes a detailed description, figures of characters of diagnostic importance and comments. We also provide an updated map of Caecidotea records in Mexico. This work substantially increases the number of epigean Caecidotea known to occur in Mexico to 11 species, a new total of 99 species described to North America. 

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
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