Voloshinoides sonorensis n. sp. (Cretaceous benthic foraminifera): A potential lower Albian marker of shallow-water carbonates in northern Mexico

Schlagintweit, Félix; Scott, Robert W.

doi:10.1016/j.cretres.2014.10.002

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Its numerical age range is 114.20-108.69 Ma (Scott, 2014). The small benthic foraminifer, V. sonoraensis, was discovered and named from the lower Albian Cerro La Espina Member of the Mural Formation in the nearby Cerro la Ceja block (Schlagintweit and Scott, 2015). The large benthic foraminifer P. sunnilandensis is widespread in Barremian to lower Albian sections in the Gulf of Mexico and Sonora and its age range is 125.08-109.36 Ma (Scott, 2014).…”

Section: Biostratigraphymentioning

confidence: 99%

“…Family Ataxophragmiidae Schwager, 1877 Voloshinoides Barnard andBanner, 1980 Voloshinoides sonoraensis Schlagentweit andScott, 2015 Figure 3, 8-10 Remarks. This species was first identified in the lower Albian Cerro La Espina Member of the Mural Formation at the Cerro la Ceja section about 20 km northwest of the Arizpe section.…”

Section: Superfamily Ataxophragmioidea Schwager 1877mentioning

confidence: 99%

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Lower Cretaceous (Aptian-Albian) Bisbee Group, Arizpe area, northern Sonora, Mexico: Integrated biostratigraphy, age and provenance from U-Pb and Hf isotopes

González-León,

Sierra-Rojas,

Scott

et al. 2023

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New data on the stratigraphy, biostratigraphy, detrital zircon U-Pb, and Hf isotope geochronology of a Lower Cretaceous succession of the Bisbee Group in northern Sonora, Mexico that accumulated in the Altar-Cucurpe sub-basin help to constrain ages of their formations and documents the detrital provenance. These tectonically shortened strata, studied in the Arizpe area, crop out in the Cerro La Ceja block (CCB) composed of the upper Morita Formation, the complete Mural Limestone, and Cintura Formations, and the lower part of La Juana Formation. The Sierra Los Azulitos block (SAB), composed of the Mural Limestone, is thrust eastward over the CCB. A measured section of the Mural Limestone in the SAB block includes the upper Tuape Shale, Los Coyotes, Cerro La Puerta, and part of the Cerro La Espina members whose age is constrained as upper Aptian to lower Albian based on benthic and planktonic foraminifera, bivalves and echinoderms. The age of the boundary between the Morita and Tuape Shale Member is constrained by detrital zircon maximum depositional ages (MDA) of 115.8 ± 1.1 Ma and 113.9 ± 0.8 Ma, respectively. The MDA of the upper Mural is 111.6 ± 1.6 Ma and the MDA of basal Cintura Formation is 108.8 ± 1.1 Ma. The La Juana Formation has upper Albian bivalves and echinoderms. About one-quarter of the detrital zircon grains dated from the five sandstone samples have Proterozoic ages with age peaks that clearly indicate provenance from basement rocks of southwestern Laurentia. More than two-thirds of the grains are of Jurassic and Early Cretaceous age in about the same proportions, and have main peaks at 166, 150, and 118 Ma. The Jurassic grains may have sources in rocks of the Jurassic Cordilleran continental magmatic arc of southwestern North America, and the most probable sources for the Cretaceous grains are arcs of the Peninsular Ranges batholith that by that time were located adjacent to coastal Sonora. Jurassic and the Early Cretaceous zircons dated from 195.3 to 106.8 Ma both have mixed εHf(t) values that range from 9.53 to -21.28, and TDM model ages between 0.4 to 0.8 Ga for the primitive grains, and 0.8 to 1.3 Ga for the more evolved zircons. The probable source for the Jurassic grains with negative εHf values might be local granites of that age in northern Sonora that have Neoproterozoic TDM model ages. In contrast, sources for the Jurassic zircon with positive Hf values may be Jurassic igneous and metaigneous rocks of the Peninsular Ranges Batholith of the Californias, although data reported are scarce. Similarly, the Early Cretaceous detrital zircon grains with mixed positive and negative εHf values may have provenance from igneous rocks of the Peninsular Ranges Batholith-Sierra Nevada magmatic arc.

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Section: Biostratigraphymentioning

confidence: 99%

Section: Superfamily Ataxophragmioidea Schwager 1877mentioning

confidence: 99%

Lower Cretaceous (Aptian-Albian) Bisbee Group, Arizpe area, northern Sonora, Mexico: Integrated biostratigraphy, age and provenance from U-Pb and Hf isotopes

González-León,

Sierra-Rojas,

Scott

et al. 2023

revmexcg

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Isotopic chemostratigraphy and biostratigraphy of Lower Cretaceous Alisitos Formation (Punta China section), Baja California, Mexico

Madhavaraju

Scott²,

Kandasamy

et al. 2020

Geological Journal

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Nine units of carbonate rocks are recognized, of which the highest five units are examined here under biostratigraphical and chemostratigraphical aspects in order to infer mid-Cretaceous OAE intervals in Punta China section, Baja California. The biota in Units 5, 6, 7, and 8 show low diversity, while Unit 9 is characterized by a high diversity of microfossils. Benthic foraminiferal assemblage and rudist genera identified in Unit 9 indicate a lower Albian age. Lithofacies and fossil assemblages suggest that the depositional environment was a shallow marine shelf or platform adjacent to caprinid buildups. The limestones of the Alisitos Formation show both negative and positive δ 13 C values that range between −0.9 and + 7.5‰. Large variations in δ 18 O values are noticed in the limestone units (−7.9 to −2.2‰). The 87 Sr/ 86 Sr ratios of the bulk limestone samples vary between 0.706662 and 0.707305. Most of the limestones have lower 87 Sr/ 86 Sr ratios that may be the result of inclusion of less radiogenic strontium from the volcanic rocks. One limestone sample from Unit 7 has a relatively pristine 87 Sr/ 86 Sr ratio (0.707305) whose numerical age is 111.61 Ma. The carbon-isotope curve reveals the presence of two episodes of oceanic anoxic subevents in the studied section. The lower part of Unit 9 has significant negative carbon isotope excursion (CIE) that correlated with the Paquier subevent. Similarly, another negative CIE is also observed in the upper part of Unit 9, which suggests a correlation with Leenhardt subevent.

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Aptian–Albian sequence stratigraphy, biostratigraphy, chemostratigraphy, and chronostratigraphy: Sonoran shelf and Tamaulipas Basin, Mexico

Scott,

González-León,

Lawton

et al. 2024

Cretaceous Research

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Voloshinoides sonorensis n. sp. (Cretaceous benthic foraminifera): A potential lower Albian marker of shallow-water carbonates in northern Mexico

Cited by 5 publications

References 23 publications

Lower Cretaceous (Aptian-Albian) Bisbee Group, Arizpe area, northern Sonora, Mexico: Integrated biostratigraphy, age and provenance from U-Pb and Hf isotopes

Lower Cretaceous (Aptian-Albian) Bisbee Group, Arizpe area, northern Sonora, Mexico: Integrated biostratigraphy, age and provenance from U-Pb and Hf isotopes

Isotopic chemostratigraphy and biostratigraphy of Lower Cretaceous Alisitos Formation (Punta China section), Baja California, Mexico

Aptian–Albian sequence stratigraphy, biostratigraphy, chemostratigraphy, and chronostratigraphy: Sonoran shelf and Tamaulipas Basin, Mexico

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