Evaluation of the ongoing rifting and subduction processes in the geochemistry of magmas from the western part of the Mexican Volcanic Belt

Verma, Surendra P.; Pandarinath, Kailasa; Rivera-Gómez, M. Abdelaly

doi:10.1016/j.jsames.2015.12.007

Cited by 18 publications

(4 citation statements)

References 113 publications

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“…The EAP near to the Alvarado beach, Veracruz State includes the volcanic fields like Tlanchinol‐Tantima‐Alamo (TTA), Chiconquiaco‐Palma Sola (CP), Anegada High (AH), and Los Tuxtlas (LT) (Figure ). Volcanism began in the late Miocene and continued to Holocene with eruptions in ad 1664 and 1973, consisting of alkali basalts, hawaiites with less common calc‐alkaline basaltic andesites, and andesites (Nelson & González‐Caver, ; Verma, ; Verma, Díaz‐González, & Armstrong‐Altrin, ; Verma, Pandarinath, & Rivera‐Gómez, ).…”

Section: Discussionmentioning

confidence: 99%

Provenance discrimination between Atasta and Alvarado beach sands, western Gulf of Mexico, Mexico: Constraints from detrital zircon chemistry and U–Pb geochronology

et al. 2018

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The bulk sand samples and detrital zircons collected from the Atasta and Alvarado beach areas in the southwestern Gulf of Mexico have been analysed for geochemistry and U–Pb ages to constrain their provenance. The index of chemical maturity and SiO2/Al2O3 ratio of the Atasta and Alvarado beach sands indicated low compositional maturity. The chondrite‐normalized REE patterns and Eu anomalies of the Atasta and Alvarado beach sands suggested that the sands were derived from felsic and intermediate igneous rock types, respectively. A wide range in Th and U contents of the Atasta (~1.0–884 ppm and ~39–883 ppm, respectively) and Alvarado (~13–2,641 ppm and ~21–2,457 ppm, respectively) zircons likely indicates that the detrital zircon populations consist of zircons derived from multiple sources. The total rare earth element (ΣREE) content in the Atasta and Alvarado zircons ranges from ~151 to 2,088 ppm and ~154 to 3,580 ppm, respectively. The chondrite‐normalized REE patterns of zircons from the two beach areas show slightly depleted light REE (LREE) and enriched heavy REE (HREE), as well as positive Ce and negative Eu anomalies. A few zircons of Alvarado beach lack a Ce positive anomaly but exhibit a distinct Eu anomaly. The differences in REE patterns among zircons between the two beach areas revealed the variations in the type of source terranes, which supplied zircons to the beach areas. The detrital zircon age distribution for the Atasta beach is homogeneous, showing a prominent Proterozoic peak (~596–2,461 Ma; number of samples n = 62) with few Cenozoic (~10.43–65.2 Ma; n = 4) and Palaeozoic (~380–468 Ma; n = 5) zircons. The zircon U–Pb ages of Alvarado beach revealed Cenozoic (~0.25–63.9 Ma; n = 65), Mesozoic (~67.9–181.2 Ma), Palaeozoic (~252–297 Ma), and Proterozoic (~589–1,501 Ma) age clusters with predominant Cenozoic zircons. The comparison of zircon REE chemistry and geochronological data of this study with published data suggests that the source terranes, which supplied zircons to the Atasta beach, were the Chiapas Massif and Oaxacan complexes, whereas the zircons in the Alvarado beach were derived from the nearby Mexican Volcanic Belt and Eastern Alkaline Province. The provenance variation between the two beach areas was also revealed by the dissimilarities in zircon age clusters.

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Section: Discussionmentioning

confidence: 99%

Provenance discrimination between Atasta and Alvarado beach sands, western Gulf of Mexico, Mexico: Constraints from detrital zircon chemistry and U–Pb geochronology

et al. 2018

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“…The Trans‐Mexican Volcanic Belt (TMVB; also named as Mexican Volcanic Belt‐MVB) is described as a Miocene to Recent E‐W‐oriented volcanic province that extends approximately 1,000 km long from Tepic to Veracruz (Figure 1), and about 200–500 km wide and contains ~8,000 volcanic structures (Andreani, Le Pichon, Rangin, & Martínez‐Reyes, 2008; Verma, 2015). The TMVB has been divided by several authors (i.e., Ferrari, Orozco‐Esquivel, Manea, & Manea, 2012; Verma, 2015; Verma, Pandarinath, & Rivera‐Gómez, 2016) in three main sectors: western, central and eastern. The geodynamic evolution of the TMVB is very complex due to their significant differences in geochemical, isotopic, and geochronological composition of the volcanic rocks, as well as tectonic setting.…”

Section: Introductionmentioning

confidence: 99%

“…The geodynamic evolution of the TMVB is very complex due to their significant differences in geochemical, isotopic, and geochronological composition of the volcanic rocks, as well as tectonic setting. Several kinds of models (subduction‐related, plume‐related, continental rifting, and strike‐slip faulting) have been proposed by several researchers for the origin and evolution of the TMVB (Díaz‐Bravo, Gómez‐Tuena, Ortega‐Obregón, & Pérez‐Arvizu, 2014; Frey et al, 2014; Gómez‐Tuena, Langmuir, Goldstein, Straub, & Ortega‐Gutiérrez, 2007; Petrone, Orozco‐Esquivel, & Ferrari, 2014; Verma & Nelson, 1989; Verma et al, 2016) and an extensional tectonic regime is developed in the triple rift system known as Tepic‐Zacoalco Rift, Colima Rift and Chapala Rift (TZR‐CR‐ChR; Frey, Lange, Hall, Delgado‐Granados, & Carmichael, 2007; Luhr, Nelson, Allan, & Carmichael, 1985).…”

Section: Introductionmentioning

confidence: 99%

“…The WTMVB has been extensively studied (i.e., Crummy, Savov, Navarro‐Ochoa, Morgan, & Wilson, 2014; Luhr, 2000; Luhr & Carmichael, 1980; Nelson, 1980; Verma et al, 2016), nevertheless, there is still remaining detailed geochemical studies in some areas from the WTMVB. This is the case of the Compostela area (study area ~123 km 2 ) that is located south of the city of Tepic (Figure 1) and is mainly characterized by different volcanic lithologies.…”

Section: Introductionmentioning

confidence: 99%

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Geochemistry and geochronology of intermediate volcanic rocks from the Compostela area, Nayarit, Mexico: Implications for petrogenesis and tectonic setting

et al. 2021

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The Compostela area is located in the western Trans‐Mexican Volcanic Belt, which consists of volcanic rocks that produced during the Pliocene to Recent volcanism. In this paper, we present petrography, whole‐rock major‐ and trace‐element concentrations, Ar–Ar ages, and Sr–Nd isotopic data of volcanic rocks from the Compostela area in the south of the city of Tepic, Nayarit, Mexico. These volcanic rocks are of intermediate composition and belong to the transitional series: basaltic trachyandesites [52.72–53.94 wt% SiO2; 0.69–2.53 wt% MgO] and subalkaline series: low‐Si [55.11–60.94 wt% SiO2; 0.79–2.74 wt% MgO] and high‐Si [61.60–62.71 wt% SiO2; 0.36–0.80 wt% MgO] andesites. The 40Ar/39Ar dating of two basaltic trachyandesites yields plateau ages of 1.05 ± 0.15 Ma and 1.07 ± 0.17 Ma and the andesites yielded a plateau age of 2.42 ± 0.36 Ma. These results indicate that the studied rocks were formed during the Pleistocene in two discrete episodes. The basaltic trachyandesites show enriched light rare earth elements patterns relative to high rare earth elements [(La/Yb)N = 5.81–8.07] with negligible Eu anomalies. The andesites display enriched large‐ion lithophile elements (Ba, K) with anomalies of Nb (Th/Ce) and Ti in the three groups identified in the subalkaline series. The basaltic trachyandesites appear in a tight cluster of initial 87Sr/86Sr ratios (0.703519–0.703882) as compared to the basaltic andesite 87Sr/86Sr (0.704073) and positive ɛNd(t) values of +5.6 to +3.4, respectively, indicating that the basaltic trachyandesites were derived from intermediate magmas from a shallow mantle source. Geochemical modelling reveals that both basaltic trachyandesite and andesite rocks were derived by a process of crystal fractionation accompanied by assimilation of crustal rocks at the lower or middle level. Geochemical ratios and multidimensional discrimination diagrams, combined with the cross‐section of the subduction zone indicates that basaltic trachyandesites were generated from a rift and/or Ocean Island Basalt‐type source, whereas andesites were generated from a slab‐derived source in a subduction environment.

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Multidimensional Diagrams for Tectonic Discrimination of Igneous and Sedimentary Rocks

Verma

2019

Road From Geochemistry to Geochemometrics

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Evaluation of the ongoing rifting and subduction processes in the geochemistry of magmas from the western part of the Mexican Volcanic Belt

Cited by 18 publications

References 113 publications

Provenance discrimination between Atasta and Alvarado beach sands, western Gulf of Mexico, Mexico: Constraints from detrital zircon chemistry and U–Pb geochronology

Provenance discrimination between Atasta and Alvarado beach sands, western Gulf of Mexico, Mexico: Constraints from detrital zircon chemistry and U–Pb geochronology

Geochemistry and geochronology of intermediate volcanic rocks from the Compostela area, Nayarit, Mexico: Implications for petrogenesis and tectonic setting

Multidimensional Diagrams for Tectonic Discrimination of Igneous and Sedimentary Rocks

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