La Primavera caldera (Mexico): Structure inferred from gravity and hydrogeological considerations

Alatorre-Zamora, M. A.; Campos-Enríquez, J. O.

doi:10.1190/1.1443132

Cited by 22 publications

(3 citation statements)

References 20 publications

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“…The zone is surrounded by major faults. Neotectonic control from Quaternary volcanic activity reveals NW-SE alignments one of which is approximately tangent to Guadalajara urban area (Luhr and Lazaar, 1985;Alatorre-Zamora and Campos-Enríquez, 1991;Rosas-Elguera and Urrutia-Fucugauchi, 1998). Extensions occurring from Late Miocene at the Guadalajara area have been postulated in response to an initial opening of the S of California Gulf (Ferrari, 1995).…”

Section: Adjacent Local Geologymentioning

confidence: 99%

Inference of fault and fracture systems beneath the Matatlan waste dump basement, a VLF study

Alatorre-Zamora¹,

Campos-Enríquez

Belmonte-Jiménez

et al. 2014

Geofísica Internacional

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Se utilizó la técnica VLF para inferir zonas de fallas o de grandes fracturas que pudiesen servir como conductos para fluidos de desechos contaminantes en el vertedero de Matatlán, en Guadalajara, al oeste de México. Para interpretar los datos se usaron los filtros de Fraser y de Karous-Hjelt. Se interpretaron perfiles de forma directa empleando el filtro modificado de Karous-Hjelt. Se aplicaron los filtros de Fraser y de Karous-Hjelt conjugados a todos los datos. Los resultados de ambas técnicas muestran similitud en las posiciones y orientaciones de rasgos anómalos que se asocian a zonas de fracturas o de fallas. Se observa una zona de falla en el centro del sitio, que tiene un rumbo NEE-SWW. Otros rasgos importantes inferidos tienen direcciones NW-SE y se observan en la parte occidental del área. El uso conjunto de las técnicas basadas en los filtros de K-H y de Fraser dan resultados como una estructura N-S inferida en el límite occidental del vertedero, así como rasgos anómalos de dirección NW-SE, principalmente en la mitad occidental del sitio. La estructura N-S tiene la misma dirección que el Cañón del Río Grande de Santiago, mientras que los rasgos NW-SE coinciden con las direcciones del rift Tepic-Zacoalco. Hacia el centro del área aparecen otros rasgos con direcciones NE-SW. Todos estos rasgos y sus direcciones coinciden de manera fuerte con la predominancia de grupos de fracturas mostrados en el análisis estadístico de fracturas, y podrían servir como conductos para la migración de lixiviados hacia el Cañón Coyula, al sur, y hacia el Cañón del Río Grande de Santiago, al este del sitio. Un análisis estadístico de direcciones de fracturas mostró 4 direcciones principales N-S (A), N75-80E (B), N60-65W (C) y N25-30W (D), y dos direcciones secundarias que son N45-55E (E) y 90E (F). El patrón primario A coincide con la dirección del Cañón del Río Grande de Santiago, mientras que el patrón secundario F tiene una dirección paralela a la del Cañón Coyula.Palabras clave: very Low Frequency, vertedero de Matatlán, zonas de fracturas, distribución de corriente, filtros Fraser y Karous-Hjelt.

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Section: Adjacent Local Geologymentioning

confidence: 99%

Inference of fault and fracture systems beneath the Matatlan waste dump basement, a VLF study

Alatorre-Zamora¹,

Campos-Enríquez

Belmonte-Jiménez

et al. 2014

Geofísica Internacional

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“…The gravity method plays a vital role in geological structure estimation and exploration purposes. There are numerous implementations, such as, structure estimation of sedimentary basins (Silva et al., 2006; Zhou, 2013; Pallero et al., 2015; A. Roy et al., 2021b), faults and folds (L. Roy et al., 2000; Chakravarthi & Sundararajan, 2004, 2007b; Roy & Kumar, 2021) due to crustal deformations, glaciology (Crossley & Clarke, 1970; Tinto & Bell, 2011) and hydro‐geology (Alatorre‐Zamora & Campos‐Enriquez, 1991; Güntner et al., 2007) etc. The exploration study includes mining (Jaffal et al., 2010; Veiga & Gunson, 2020), hydrocarbon exploration (Rose et al., 2006; W. Li et al., 2016), cavity detection (Mochales et al., 2008; Saibi et al., 2019) etc.…”

Section: Introductionmentioning

confidence: 99%

Structure Estimation of 2D Listric Faults Using Quadratic Bezier Curve for Depth Varying Density Distributions

Roy

Kumar

Sharma

2022

Earth and Space Science

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Listric faults were first introduced by Suess (1909) for describing faults in coal mines in northern France. The fault planes of listric faults are generally upward concave in nature, and the dip decreases with depth (Shelton, 1984). Listric faults have particular importance in the formation of sedimentary basins. Most of the listric faults are generally occurs during the formation of rift or formation of passive continental margins (Bally et al., 1981). The curvature occurred due to the thick sediment depositions in case of boundary faults (Chakravarthi, 2011). Listric fault can produce structural trap by relative displacement of strata to create a barrier to petroleum migration (Sheth, 1998;Yamada & McClay, 2003). It also has structural importance for mineral explorations (Song et al., 2012).The gravity method is one of the oldest geophysical approaches for subsurface imaging. In general, gravity inversion for subsurface parameter estimation is non-unique but by incorporating proper constraints (Florio, 2020;Li & Oldenburg, 1996;Portniaguine & Zhdanov, 2002) a stable and converging parameter optimization can be achieved. In our present study, the density contrast is assumed to be known from borehole logging and used as a constraint for fault structure estimation. Furthermore, an uncertainty appraisal provides a reliable solution for any ill-posed problem.The gravity method is one of the passive geophysical techniques to study the interior of the Earth. The ground gravity survey is very fast, inexpensive, and can cover a large study area via non-destructive measurements. The gravity method plays a vital role in geological structure estimation and exploration purposes. There are numerous implementations, such as, structure estimation of sedimentary basins (

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“…The gravity method is one of geophysical prospecting methods that are widely used in the exploration of hydrocarbons [1]- [3], geothermal [4]- [6], minerals [7] [8], and environmental and engineering problems [9] [10], as well as the study of the Earth's crust structures [11] [12]. The method is based on the existence of rock density contrast at the subsurface that can be measured either directly or indirectly in the form of gravity anomaly.…”

Section: Introductionmentioning

confidence: 99%

Imaging Rock Density Distribution beneath Liwa Fracture Zone in the Southern Part of the Great Sumatran Fault System, Indonesia

Widarto¹,

Yudistira²,

Nishida³

et al. 2016

IJG

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We have imaged rock density distribution beneath Liwa fracture zone in the southern part of the the Sumatran Fault Zone by modelling and inverting Bouguer gravity data in two-and three-dimensional environments, respectively. The purpose of this study is aimed to figure out the subsurface distribution of rock densities associated with subsurface basement structure representing the evidence of trans-tensional tectonic product in the SF. In the gravity modeling, to eliminate distortions to the measured gravity values before modelling and inverting the data, Bouguer anomalies obtained in field measurements are reduced to the horizontal plane of z = +800 m as a representation of the average elevation in Liwa. For the inversion, we used algorithm implementing depth-and minimum volume weighting parameters in order to obtain a smooth model with better vertical resolution. The two-dimensional models show clearly surface topography of the basement rocks and the presence of normal faults. The reduced Bouguer anomaly of +800 m elevation shows the presence of structural lineaments extending primarily in a northwest-southeast direction, parallel to Sumatran Fault Zone and older graben faults showing a negative flower structure. From the three-dimensional inversion, the model illustrates an increase of density contrast, lower values being found near the surface and higher values in the deeper parts. The lower density contrast of 0.15 to 0.3 g/cm 3 found in the rock groups at depths of 2 km and less is characteristic of relatively homogeneous and poorly compacted rocks. Rocks with moderate to high density contrast (>1.0 g/cm 3) are recognized at depths of over 2 km. This model suggests a change of basement morphology as a function of depth, and delineates structural lineaments extending in north-* Corresponding author. D. S. Widarto et al. 599 west-southeast direction. This study supports the previous thought that Liwa area is underlain by graben structures, formed by trans-tensional tectonic events. Higher-density Tertiary volcanic breccia and lower-density Quaternary volcanic products of the Ranau Formation form the basement rocks and the overlying younger sediments, respectively.

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La Primavera caldera (Mexico): Structure inferred from gravity and hydrogeological considerations

Cited by 22 publications

References 20 publications

Inference of fault and fracture systems beneath the Matatlan waste dump basement, a VLF study

Inference of fault and fracture systems beneath the Matatlan waste dump basement, a VLF study

Structure Estimation of 2D Listric Faults Using Quadratic Bezier Curve for Depth Varying Density Distributions

Imaging Rock Density Distribution beneath Liwa Fracture Zone in the Southern Part of the Great Sumatran Fault System, Indonesia

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