Radiocarbon ages of Holocene Pelado, Guespalapa, and Chichinautzin scoria cones, south of Mexico City: implications for archaeology and future hazards

Siebe, Claus; Rodrı́guez-Lara, Virgilio; Schaaf, Peter; Abrams, Michael J.

doi:10.1007/s00445-003-0304-z

Cited by 115 publications

(79 citation statements)

References 37 publications

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“…The Chimalacatepec lava tube system (EspinasaPereña, 2006) runs down the south slope of the Suchiooc Volcano, one the ~200 basaltic-andesitic (calc-alkaline) cones that formed in the Holocene, less than 5000 years BP (Siebe et al, 2004) in the Chichinautzin volcanic field, near the town of San Juan Tlacotenco in central Mexico (Fig. 1).…”

Section: Sampling Sitementioning

confidence: 99%

Morphological and mineralogical characterization of speleothems from the Chimalacatepec lava tube system, Central Mexico

López‐Martínez¹,

Barragán²,

Beraldi-Campesi³

et al. 2016

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Abstract:Siliceous, opal-A speleothems of the Chimalacatepec lava tube system in central Mexico are characterized here for the first time. Morphologically, they can be classified into cylindrical and planar, and display a wide array of shapes, inner textures, and locations within the lava tube. All speleothems analyzed here are composed of opal-A, and their pores are filled with calcite and monohydrocalcite. Microscopic examination reveals a variety of microbial-looking, silicified filaments and cell casts embedded within the micro lamination of the structures. The abundance of biofilms in the Chimalacatepec lava tube may share similarities with other volcanic caves elsewhere. The direct presence of such bimorphs in the microstructure of the speleothems suggests the biological mediation of these structures. Potential mechanisms include nucleation and sorption of silica on extracellular polymeric substances in the biofilms that, along with the SiO 2 saturation in the water film and evaporative effects, result in the formation of a speleothem. That said, the presence of microbes in these and other cave systems, or their inevitable interactions with the mineral phase of the speleothems, should not be surprising. In view of this, these structures can be most accurately described as biospeleothems. This study contributes to our understanding of the diversity of such structures in these types of cave systems and our ability to recognize the presence of microbes in these.lava tubes, siliceous speleothems, Chichinautzin, biospeleothems

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Section: Sampling Sitementioning

confidence: 99%

Morphological and mineralogical characterization of speleothems from the Chimalacatepec lava tube system, Central Mexico

López‐Martínez¹,

Barragán²,

Beraldi-Campesi³

et al. 2016

IJS

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“…50 km south of Mexico City, Mexico (19 • 01.10 N, 99 • 05.80 W; Figure 1). It encompasses a complex territory including the Tepozteco Mountains, which are the result of eroded lahars, as well as a mosaic of lava fields with ages ranging from 1835 to >20,000 years old [18,19]. We studied oak forests in six geomorphological units: Tepozteco Mountains (TM), and four lava fields, namely Chichinautzin (CH), Suchiooc (SU), Otates, which is divided into lower (LO) and upper (UO) subunits, and Oclayuca (OC).…”

Section: Study Sitementioning

confidence: 99%

Using Google Earth Surface Metrics to Predict Plant Species Richness in a Complex Landscape

et al. 2016

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Abstract:Google Earth provides a freely available, global mosaic of high-resolution imagery from different sensors that has become popular in environmental and ecological studies. However, such imagery lacks the near-infrared band often used in studying vegetation, thus its potential for estimating vegetation properties remains unclear. In this study, we assess the potential of Google Earth imagery to describe and predict vegetation attributes. Further, we compare it to the potential of SPOT imagery, which has additional spectral information. We measured basal area, vegetation height, crown cover, density of individuals, and species richness in 60 plots in the oak forests of a complex volcanic landscape in central Mexico. We modelled each vegetation attribute as a function of surface metrics derived from Google Earth and SPOT images, and selected the best-supported linear models from each source. Total species richness was the best-described and predicted variable: the best Google Earth-based model explained nearly as much variation in species richness as its SPOT counterpart (R 2 = 0.44 and 0.51, respectively). However, Google Earth metrics emerged as poor predictors of all remaining vegetation attributes, whilst SPOT metrics showed potential for predicting vegetation height. We conclude that Google Earth imagery can be used to estimate species richness in complex landscapes. As it is freely available, Google Earth can broaden the use of remote sensing by researchers and managers in low-income tropical countries where most biodiversity hotspots are found.

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“…Relaciones entre los principales sistemas de fallas del Mioceno-Cuaternario y el volcanismo de la FVTM (ver sección 2.1 para referencias Sistema Morelia-A cambay S P C Querétaro N durante el Cuaternario. El vulcanismo máfi co se concentra en los conos monogenéticos de los campos de la Sierra de Chichinautzin (Martín-Del Pozzo, 1982;Márquez et al, 1999c;Siebe et al, 2004b) y Apan (García-Palomo et al, 2002); y en la región del Pico de Orizaba y Cofre de Perote (Lámina 1) (Siebert y Carrasco-Núñez, 2002). Los productos más evolucionados se encuentran en las calderas de Acoculco (Verma, 2001a), Los Humeros (Ferriz y Mahood, 1984;Verma, 2000b), el centro silícico de Las Cumbres (Rodríguez-Elizarrarás et al, 2002), y los domos de Las Derrumbadas y el Cerro Pizarro (Riggs y Carrasco-Núñez, 2004), todos ubicados en el estado de Puebla.…”

Section: Golfo De Méxicounclassified

“…Recientemente, Siebe et al (2004b) realizaron una caracterización geoquímica y petrográfi ca detallada de tres centros volcánicos del CVC (Pelado, Guespalapa y Chichinautzin), documentando nuevamente la heterogeneidad geoquímica e isotópica de las rocas máfi cas del campo volcánico como un refl ejo de la diversidad composicional del manto debajo del arco. Así mismo, y utilizando una variedad de argumentos tectónicos, termodinámicos y petrológicos, los autores refutan el modelo de pluma del manto o de rift continental para explicar la heterogeneidad de composiciones, y en cambio brindan soporte al modelo postulado por Wallace y Carmichael (1999).…”

Section: El Campo Volcánico De Chichinautzin (Cvc)unclassified

Petrogénesis ígnea de la Faja Volcánica Transmexicana

Gómez-Tuena¹,

Orozco-Esquivel²,

Ferrari³

2005

BSGM

113

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C i e n A ñ o s ResumenLa extraordinaria diversidad magmática de la Faja Volcánica Transmexicana está controlada (directa o indirectamente) por dos placas oceánicas independientes cuyos parámetros geofísicos y composicionales se modifi can constantemente a lo largo de la trinchera, por un régimen tectónico esencialmente distensivo que opera con distinta intensidad sobre la placa continental, por un basamento cortical con diferentes edades, espesores y composiciones, y por una fuente mantélica primaria de composición extremadamente variable que ha sido infl uenciada, en mayor o menor medida, por los agentes químicos derivados de la subducción. El régimen tectónico convergente y, en consecuencia, el arco magmático, tampoco han evolucionado de forma homogénea a lo largo su historia, sino que han mostrado transformaciones notables en su posición, geometría y composición. Por estos motivos, la Faja Volcánica Transmexicana es el resultado de uno de los sistemas tectónicos convergentes más complejos del planeta, el objeto de más de un siglo de investigaciones científi cas, y también el centro de las controversias más notables sobre la geología mexicana.Palabras clave: Faja Volcánica Transmexicana, México, subducción, arco magmático, petrología ígnea, manto, corteza. Abstract The magmatic diversity of the Transmexican Volcanic Belt is directly or indirectly controlled by two independent oce-

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Radiocarbon ages of Holocene Pelado, Guespalapa, and Chichinautzin scoria cones, south of Mexico City: implications for archaeology and future hazards

Cited by 115 publications

References 37 publications

Morphological and mineralogical characterization of speleothems from the Chimalacatepec lava tube system, Central Mexico

Morphological and mineralogical characterization of speleothems from the Chimalacatepec lava tube system, Central Mexico

Using Google Earth Surface Metrics to Predict Plant Species Richness in a Complex Landscape

Petrogénesis ígnea de la Faja Volcánica Transmexicana

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