Mineralogy and geochemistry of the Lower Cretaceous siliciclastic rocks of the Morita Formation, Sierra San José section, Sonora, Mexico

Madhavaraju, Jayagopal; Pacheco-Olivas, S.A.; González–León, Carlos M.; Espinoza-Maldonado, Inocente G.; Sanchez-Medrano, P.A.; Villanueva‐Amadoz, Uxue; Monreal, Rogelio; Pi‐Puig, Teresa; Ramírez-Montoya, Erik; Grijalva-Noriega, Francisco Javier

doi:10.1016/j.jsames.2017.04.001

Cited by 40 publications

(13 citation statements)

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“…The chemical composition of clastic sediments is an important clue to their provenance (Armstrong‐Altrin et al, ; Cullers, ; Madhavaraju, ; Madhavaraju et al, ; Madhavaraju & Ramasamy, ; Madhavaraju, Ramirez‐Montoya, et al, ; Madhavaraju, Tom, et al, ; Perri, Critelli, Mongelli, & Cullers, ; Ramachandran et al, ; Taylor & McLennan, ). Al 2 O 3 and TiO 2 are not fractionated relative to each other during weathering, transportation, and digenesis (Young & Nesbitt, ).…”

Section: Discussionmentioning

confidence: 99%

“…It also helps to constrain the composition and evolution of the upper continental crust (McLennan, ; Taylor & McLennan, ). The elemental ratios of key trace elements, REE patterns, and the magnitude of Eu anomalies in sandstones and shales further provide useful information regarding provenance (Armstrong‐Altrin et al, ; Bhatia, ; Cullers, ; Feng & Kerrich, ; Madhavaraju, ; Madhavaraju, Ramirez‐Montoya, et al, ; Madhavaraju, Tom, et al, ; Madhavaraju et al, ; Nath, Kunzendorf, & Pluger, ; Ramachandran et al, ; Raza et al, ; Wronkiewicz & Condie, ; Young, Pitawala, & Ishiga, ).…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon record of Mesozoic volcanic arcs in the Lower Cretaceous Mural Limestone, northwestern Mexico

et al. 2018

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The northwestern part of Mexico, southern Arizona, and southern California witnessed extensive arc magmatism during Late Triassic to Early Cretaceous. Here, we present results from petrography, whole‐rock geochemistry (major and trace including rare‐earth elements), and detrital zircon geochronological studies that were carried out on sandstones and shales of the Mural Limestone exposed in the Rancho Bufalo area. Based on the petrography, sandstones are classified as sublitharenite, litharenite, feldspathic litharenite, and lithic arkose. The sandstones contain higher proportion of monocrystalline quartz than polycrystalline quartz. Sandstones and shales from the various members of the Mural Limestone show large variations in major and trace elements concentrations. The average concentrations of ΣREE (total ΣREE) are lower in sandstones than in shales. The chondrite‐normalized REE patterns of the sandstones and shales are moderately fractionated with light REE (LREE) enrichment relative to heavy REE (HREE) and with flat to slightly depleted HREE patterns. The chemical index of alteration values and A–CN–K relationships of sandstones indicate low to moderate intensity of weathering in the source region; however, shale samples suggesting the source rocks were subjected to moderate intensity of chemical weathering. The chondrite‐normalized REE patterns, Al2O3/TiO2 ratio, elemental ratios like Cr/V, Y/Ni, and Eu‐anomaly (Eu/Eu*), and bivariate plots suggest that the sandstones and shales were derived mainly from felsic source rocks. Detrital zircon U–Pb geochronology of sandstones from Fronteras, Rancho Bufalo, and Cerro La Ceja members of the Mural Limestone show five main groups of detrital zircon age populations: (a) Proterozoic, (b) Palaeozoic, (c) Triassic, (d) Jurassic, and (e) Early Cretaceous. Our study suggests that continental volcanic arcs in northwestern Mexico, southern Arizona, and southern California served as the provenance for the Late Triassic‐Jurassic detritus, whereas the Early Cretaceous zircon grains were derived mainly from the active Alisitos volcanic arc along the northwestern coast of Mexico.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detrital zircon record of Mesozoic volcanic arcs in the Lower Cretaceous Mural Limestone, northwestern Mexico

et al. 2018

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“…The role of hydraulic sorting and grain size effects in masking the source rock characteristics were discussed by many authors (Garzanti et al, 2009;Spagnoli, Bartholini, Dinelli, & Giordano, 2008 Roser, 2007;Hughes, Keene, & Joseph, 2000;Madhavaraju et al, 2017;Madhavaraju, Löser, Lee, Lozano-Santacruz, & Pi-Puig, 2016;Morton & Hallsworth, 1999;Ohta, 2008). In addition, hydraulic sorting also produces drastic changes in REE contents in clastic sediments due to variations in grain size and heavy mineral contents (Armstrong-Altrinet al, 2004;Armstrong-Altrin et al, 2012;Caja, Marfil, Lago, Salas, & Ramseyer, 2007;Fanti, 2009;Kasper-Zubillaga, Acevedo-Vargas, Morton-Bermea, & Ortiz-Zamora, 2008;López et al, 2005;Madhavaraju et al, 2017 and sediment recycling. The compositional variation due to the enrichment of zircon during sediment sorting is indicated by an increase in Zr/Sc ratio.…”

Section: Sediment Sortingmentioning

confidence: 99%

“…The ratios such as La/Sc, Th/Sc, Th/Co, Th/Cr, Cr/Th, (La/Yb) cn , and Eu/Eu* show marked variations between mafic and felsic source rocks that allow constraints on the provenance of sedimentary rocks (Armstrong-Altrin et al, 2004;Armstrong-Altrinet al, 2012;Cox, Lowe, & Cullers, 1995;Cullers, 1994bCullers, , 1995Cullers, Basu, & Suttner, 1988;Madhavaraju, 2015;Madhavaraju et al, 2017;Madhavaraju & Lee, 2010;Madhavaraju, Löser, et al, 2016;Velmurugan et al, 2019;Wronkiewicz & Condie, 1987;Wronkiewicz & Condie, 1989. The La/Sc, Th/Sc, Th/Co, Th/Cr, Cr/Th, (La/Yb) cn , and Eu/Eu* ratios (Table 7)…”

Section: Provenancementioning

confidence: 99%

Geochemistry of sands from the Huatabampo and Altata beaches, Gulf of California, Mexico

Madhavaraju

Armstrong‐Altrin

Pillai³

et al. 2020

Geological Journal

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Grain size, heavy minerals, mineralogical, and geochemical analyses were undertaken on the sand samples from Huatabampo (HB) and Altata (AA) beaches to infer palaeoweathering conditions and source rock characteristics. The mean grain size of HB and AA sands is fine-grained and fine-to medium-grained, respectively.Magnetite and hypersthene are the common heavy minerals identified in HB sands, whereas magnetite and ilmenite are the dominant heavy minerals in AA sands. HB sands have a high proportion of quartz and plagioclase followed by K-feldspar and zeolite. Quartz is the dominant mineral in the AA sands, followed by plagioclase and K-feldspar. Geochemically, the sand samples from HB are classified as wacke, whereas AA sands are classified as wacke and arkose. In chondrite-normalised REE plot, HB and AA sands show LREE enriched and HREE depleted pattern with negative Eu anomaly. Chemical index of alteration (CIA), plagioclase index of alteration (PIA) values and Th/U ratios of HB and AA sands suggest a low intensity of chemical weathering in the source area. The tectonic discriminant function diagram suggestsan arc setting for HB sands, whereas a rift setting for AA sands. The chondrite-normalised REE patterns, Eu anomaly, Al 2 O 3 / TiO 2 ratio, trace elemental ratios, discriminant function, and ternary diagrams suggest that the HB and AA sands were dominantly derived from felsic source rocks.The comparison of REE patterns of HB and AA sands with the source rocks exposed near to the study area suggest that the central granites of Laramide plutonic rocks exposed in Sonora were contributing sediments to the HB beach, whereas AA sands received sediments mainly from the felsic Francisco gneiss in the western Sonobari Complex of Sinaloa.

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“…The CIA, CIW, and PIA values of the core sediments are indicating a moderate to intense weathering condition (Table 3). On the other hand, index of compositional variability (ICV = [(CaO Cox et al 1995), where Fe 2 O 3 (t) represents total iron, is another method commonly used to infer sediment recycling, which decreases when weathering increases (Armstrong-Altrin et al 2014, 2017Madhavaraju et al 2017;Nagarajan et al 2017). According to Cox et al (1995), the ICV value is high (>1) in little-weathered detrital minerals like pyroxene and feldspar and it is low (<1) in highly-weathered fine-grained sediments like clay.…”

Section: Palaeoweathering Indices and Sediment Recyclingmentioning

confidence: 99%

Textural and geochemical characteristics of late Pleistocene to Holocene fine-grained deep-sea sediment cores (GM6 and GM7), recovered from southwestern Gulf of Mexico

et al. 2018

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Texture, mineralogy, geochemistry, and 14 C ages of two deep-sea sediment cores (GM6 and GM7) recovered in the southwestern Gulf of Mexico were investigated to infer their provenance and depositional condition. The sediments are enriched in fine-grained silt and clay and poor in sand content. Mineralogically, the sediments consist of quartz, calcite, smectite, and kaolinite. Based on the 14 C data, the age of the GM6 and GM7 sediment cores were calculated as 23,615 cal yrs. BP and 19,007 cal yrs. BP, respectively. The weathering indices such as chemical index of alteration (CIA), chemical index of weathering (CIW), and plagioclase index of alteration (PIA) in GM6 (56-69, 60-74, and 61-73, respectively) and GM7 (54-69, 57-76, and 55-74, respectively) cores revealed a moderate-to-high intensity of weathering. The rare earth element (REE) patterns suggested that the sediments were derived mostly by the weathering of intermediate rocks, exposed along the coastal regions of the Gulf of Mexico. The trace elemental ratios like V/Cr (<2), Ni/Co (<2), and Cu/Zn (<1), authigenic uranium content (<1), and Ce anomaly (Ce/Ce * ≤ 1) suggested that the sediments were deposited under an oxic condition, which was also revealed by the benthic foraminiferal assemblages throughout the GM6 and GM7 sediment cores.

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Mineralogy and geochemistry of the Lower Cretaceous siliciclastic rocks of the Morita Formation, Sierra San José section, Sonora, Mexico

Cited by 40 publications

References 76 publications

Detrital zircon record of Mesozoic volcanic arcs in the Lower Cretaceous Mural Limestone, northwestern Mexico

Detrital zircon record of Mesozoic volcanic arcs in the Lower Cretaceous Mural Limestone, northwestern Mexico

Geochemistry of sands from the Huatabampo and Altata beaches, Gulf of California, Mexico

Textural and geochemical characteristics of late Pleistocene to Holocene fine-grained deep-sea sediment cores (GM6 and GM7), recovered from southwestern Gulf of Mexico

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