Estratigrafía del Noreste de México y su relación con los yacimientos estratoligados de fl uorita, barita, celestina y Zn-Pb

Sánchez, F.; Solís, Rafael Puente; Partida, Eduardo González; Camprubí, Antoni

doi:10.18268/bsgm2007v59n1a4

Cited by 37 publications

(41 citation statements)

References 25 publications

(34 reference statements)

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“…siliciclastic, carbonate and evaporite rocks) have originated, however igneous rocks formed as an addition in different geological environments (Eguiluz de Antuñano, 2001;González-Sánchez et al, 2007). Important accumulations of metallic and non-metallic ores, as well as hydrocarbons are associated with these rocks (Eguiluz de Antuñano, 2001;CoronaEsquivel et al, 2006;García-Alonso et al, 2011;González-Sánchez et al, 2007, 2017.…”

Section: Introductionmentioning

confidence: 99%

Magnetic susceptibility and natural gamma radioactivity as indirect proxies for characterization of sandstones and limestones of the Sabinas basin

et al. 2017

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An analysis of magnetic susceptibility and natural gamma radioactivity is presented as indirect proxies of the characteristics of sandstones and limestones of the Sabinas basin. These rocks are located in the sedimentary sequence ranging from the Upper Jurassic to the Cretaceous. The magnetic susceptibility indicates changes in the magnetic composition of these rocks and suggests changes in their weathering degree. Ranges of values of magnetic susceptibility in sandstones and limestones allow classifying them into different groups, suggesting variability regarding conditions of origin and evolution. High values of magnetic susceptibility in limestones can be linked to sedimentation in anoxic or reducing environment, as well as with its siliciclastic content. The natural gamma radioactivity expressed in the contents of Th and relationships U / K and Th / U also suggest the degree of weathering of these rocks, mainly in the sandstones. These relations also highlight others characteristics in the sandstones related the probable provenance of sediments, its distance, degree of weathering and transport dynamics. Using the values of U / K ratio in the sandstones, it is possible to suggest the probable quartz-feldspar relationships. These ratio values classified rocks as arkose or quartzarenite, indicating the maturity of the sandstones. According to the U / K ratio values, most of these rocks which show little maturity are called arkose. Using the values of the Th / U ratio, it is possible to suggest the textures of quartzarenites, classifying them as rocks with fabric that is clast-supported or matrix-supported.

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Section: Introductionmentioning

confidence: 99%

Magnetic susceptibility and natural gamma radioactivity as indirect proxies for characterization of sandstones and limestones of the Sabinas basin

et al. 2017

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“…With Figure 6 showing all barite, manganese and Pb-Zn mines as located on the edges of the supposed blocks and apparently corresponding to the faults, the magnetic map shows one important feature of these MVT-Type mineral deposits, namely their proximity to large fault systems (González-Sánchez et al, 2007). Furthermore, most of the coal mines are located on the edges of these blocks or in areas of the basin of intermediate depth.…”

Section: Use Of Gis To Assess the Geotectonic Regime Using Aeromagnetmentioning

confidence: 96%

“…The Sabinas Basin is filled with different types of sedimentary rock, principally limestone, sandstone, shale, conglomerate, limolite and gypsum, accumulated during the Mesozoic and Cenozoic (Eguiluz de Antuñano, 2001;González-Sánchez et al, 2007). In the Late Cretaceous, the Laramide orogeny altered the sedimentary regime in the region and caused deformation in all sedimentary sequences (Eguiluz de Antuñano, 2001).…”

Section: Geological Settingmentioning

confidence: 99%

“…Metallic and nonmetallic mineral deposits can also be found in this area ( Figure 3). The nonmetallic mineralization mainly comprises coal (Corona-Esquivel et al, 2006), barite, celestine, fluorite and hydrocarbons, whereas Ag-Pb-Zn comprises the most significant metallic mineralization (González-Sánchez et al, 2007. The deposits of barite, celestine, fluorite and Ag-Pb-Zn are Mississippi Valley-Type (MVT) mineral deposits (González-Sánchez et al, 2007).…”

Section: Geological Settingmentioning

confidence: 99%

“…The deposits of metallic and nonmetallic minerals found in this basin, comprise mainly coal, fluorite, celestine, PbZn-Ag and hydrocarbons (Eguiluz de Antuñano, 2001;Corona-Esquivel et al, 2006;González-Sánchez et al, 2007.…”

Section: Introductionmentioning

confidence: 99%

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Interpretation of aeromagnetic data using GIS to evaluate the geotectonic regime of the Sabinas Basin

2017

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The study present the use of Geographic Information System (GIS) to assess the geotectonic regimen of the Sabinas Basin. Initially, the GIS database was designed using geological and geophysical information (total magnetic field reduced to the pole). Subsequently, 2D models of the basin were obtained along 4 profiles running on a north-south direction. The implementation of GIS enables a geological-geophysical interpretation generating various thematic maps that overlap the magnetic map during interpretation. The analysis of overlapping maps enables the identification of areas with different geotectonic regimes in the Sabinas Basin, as well as the relationship between these environments and mineralization. The qualitative and quantitative interpretation of the aeromagnetic data obtained for the total magnetic field reduced to the pole delineate uplifted basement areas as well as shallower blocks within them. This paper presents the location of both the basin´s deepest zones and its probable faults, which can be linked to the block boundaries. The faults zones and block boundaries correspond to the main mineral deposits found in the basin. Finally, the geotectonic regime of some sectors of the basin is detailed in order to reaffirm the results obtained by the interpretation of aeromagnetic data. Se presenta el uso de un Sistemas de Información Geográfica para evaluar el régimen geotectónico de la Cuenca de Sabinas. Inicialmente se llevó a cabo el diseño de la base de datos del Sistema de Información Geográfica, teniendo en cuenta las características de la información geológica y geofísica (campo magnético total reducido al polo). Posteriormente se obtienen modelos 2D de la cuenca a lo largo de 4 perfiles con direcciones norte-sur. A partir de la implementación del Sistema de Información Geográfica, se logró una interpretación geológica-geofísica, generando diversos mapas temáticos que se superpusieron al mapa magnético durante dicha interpretación. El análisis de los mapas superpuestos permitió identificar áreas con diferente régimen geotectónico dentro de la Cuenca de Sabinas, así como la relación de esas áreas con mineralizaciones. A partir de la interpretación cualitativa y cuantitativa de los datos del campo magnético total reducido al polo se delimitan áreas levantadas del basamento de la cuenca y los bloques más someros dentro de las mismas. También se localizan las zonas más profundas de la cuenca y probables fallas, que pueden estar vinculadas con los límites de los bloques. Las zonas de fallas y los límites de bloques están relacionados con los principales depósitos minerales de la cuenca. Por último, se detalla el régimen geotectónico de algunos sectores de la cuenca, para reafirmar los resultados de la interpretación de los datos aeromagnéticos. ABSTRACT RESUMEN

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Metallogenic model of the Eocene Santa María and Antares Zn-Pb(-Ag) skarn deposits, Velardeña Mining District, Durango, Mexico

Cano,

Camprubí,

González-Partida

et al. 2023

Miner Deposita

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The Santa María and Antares Zn-Pb(-Ag) skarn deposits in the Velardeña Mining District are located in central–NW Mexico. They lie 470 m apart along the contact between Oligocene felsic intrusions and Cretaceous limestones, and were developed during prograde, retrograde, post-ore (Santa María), and late stages. Firstly, the prograde stage was formed by fluids at ~ 600 °C and 15 wt% NaCl equiv., and consists of garnet + wollastonite ± clinopyroxene and biotite ± K-feldspar assemblages. Secondly, the retrograde/ore stage was formed by fluids at 300–500 °C with salinities of 20–30 wt% CaCl2 (Santa María) and > 40 wt% NaCl equiv. (Antares). It comprises assemblages of chlorite, amphibole, epidote, calcite, scapolite, quartz, sericite, adularia, fluorite, and muscovite associated with sphalerite, pyrite, galena, pyrrhotite, arsenopyrite, chalcopyrite, and Pb-Bi-Sb sulfosalts. Thirdly, the post-ore stage was formed by fluids at ~ 400 °C and 20–30 wt.% CaCl2 and comprises poorly mineralized calcite veins. Fourthly, the late stage was formed by fluids at < 300 °C and 20–30 wt.% CaCl2 (Santa María) and ~ 15 wt% NaCl equiv. (Antares), and crystallized tetrahedrite-group minerals and pyrite + marcasite. δ18Ofluid between ~ 14‰ and 23‰ at Santa María and between ~ 12‰ and 17‰ at Antares show a less-modified magmatic affinity for mineralizing fluids at Antares; δ13Cfluid between 0‰ and –6‰ register recycling of sedimentary C. Moreover, sulfides with δ34SVCDT between –3‰ and 2‰ reveal a magmatic source for S. Altogether, these data suggest that, at Santa María, magmatic-derived fluids actively interacted with the wall rocks, whereas at Antares the fluid-rock interaction was milder. In both deposits, metal deposition was triggered by the cooling and neutralization of ore-bearing fluids with carbonate rocks. Our 40Ar/39Ar dates for adularia of ca. 37.5 Ma place the deposits within the Eocene–early Miocene metallogenetic epoch of central–NW Mexico, during which other world-class skarn-epithermal systems were emplaced (e.g., Concepción del Oro and Mazapil-Peñasquito).

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Estratigrafía del Noreste de México y su relación con los yacimientos estratoligados de fl uorita, barita, celestina y Zn-Pb

Cited by 37 publications

References 25 publications

Magnetic susceptibility and natural gamma radioactivity as indirect proxies for characterization of sandstones and limestones of the Sabinas basin

Magnetic susceptibility and natural gamma radioactivity as indirect proxies for characterization of sandstones and limestones of the Sabinas basin

Interpretation of aeromagnetic data using GIS to evaluate the geotectonic regime of the Sabinas Basin

Metallogenic model of the Eocene Santa María and Antares Zn-Pb(-Ag) skarn deposits, Velardeña Mining District, Durango, Mexico

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