Mercury chemostratigraphy as a proxy of volcanic-driven environmental changes in the Aptian-Albian transition, Araripe Basin, northeastern Brazil

Benigno, Ana Paula Aquino; Saraiva, Antônio Álamo Feitosa; Sial, Alcídes N.; Lacerda, Luiz Drude de

doi:10.1016/j.jsames.2020.103020

Cited by 10 publications

(3 citation statements)

References 73 publications

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“…The Santana Group of the Araripe Basin is subdivided from base to top into four formations: Barbalha (formerly Rio da Batateira Formation), Crato, Ipubi and Romualdo (Assine et al 2014). The timing for this Group varies and some studies indicate an Aptian-Albian stage (Benigno et al 2021). Contrastingly, Arai & Assine (2020) suggested an Aptian age attributed by the presence of the guide palynomorph, Sergipea variverrucata in all formations of Santana Group.…”

Section: Geological Settingmentioning

confidence: 94%

Shell and long-bone histology, skeletochronology, and lifestyle of Araripemys barretoi (Testudines: Pleurodira), a side-necked turtle of the Lower Cretaceous from Brazil

Sena

Bantim

Saraiva

et al. 2021

An. Acad. Bras. Ciênc.

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In this study we provide a comprehensive investigation of the microanatomical and microstructural aspects of the carapace and limb bones of the Early Cretaceous side-necked turtle, Araripemys barretoi, from the Araripe Basin, Brazil. Inter-elemental histovariability reveals different secondary remodelling of the skeletal elements within the same individual. The vascularisation is scarce and mainly longitudinal, also it ceases towards the bone surface, forming an avascular parallel-fi bred bone with closely spaced LAGs. These traits indicate a late ontogenetic stage and a slow growth rate for one of the two A. barretoi specimens. The high cortical thickness of the costal plate suggests an increase of the shell stiffness. The elevated relative bone wall thickness of the ulna compared to other limb bones indicates a case of local pachyosteosclerosis, possibly to improve body stability in the aquatic environment.

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Section: Geological Settingmentioning

confidence: 94%

Shell and long-bone histology, skeletochronology, and lifestyle of Araripemys barretoi (Testudines: Pleurodira), a side-necked turtle of the Lower Cretaceous from Brazil

Sena

Bantim

Saraiva

et al. 2021

An. Acad. Bras. Ciênc.

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“…Though typically assigned to the Aptian, several studies place the upper part of this unit (Romualdo Formation) in the Aptian–Albian interval (e.g. 15 , 23 ).…”

Section: Geological Settingmentioning

confidence: 99%

“…The precise age of the deposits of this group is the subject of considerable debate (e.g. 7,15,18,19,[23][24][25] ). Though typically assigned to the Aptian, several studies place the upper part of this unit (Romualdo Formation) in the Aptian-Albian interval (e.g.…”

Section: Geological Settingmentioning

confidence: 99%

Early Aptian marine incursions in the interior of northeastern Brazil following the Gondwana breakup

Fauth

Kern

Villegas‐Martín

et al. 2023

Sci Rep

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This study reports a set of primeval marine incursions identified in two drill cores, 1PS-06-CE, and 1PS-10-CE, which recovered the Barbalha Formation, Araripe Basin, Brazil. Based on a multi-proxy approach involving stratigraphy, microbiofacies, ichnofossils, and microfossils, three short-lived marine incursions were identified, designated Araripe Marine Incursions (AMI) 1–3. AMI-1 and AMI-2, which occur within the shales of the Batateira Beds (lower part of the Barbalha Formation), were identified by the occurrence of benthonic foraminifera, calcareous nannofossils, dinocysts, and a mass mortality event of non-marine ostracods. AMI-3 was recognized in the upper part of the Barbalha Formation, based on the occurrence of ichnofossils and planktonic foraminifera. The observation of the planktonic foraminifera genus Leupoldina for the first time in the basin indicates early Aptian/early late Aptian age for these deposits, and the first opportunity of correlation with global foraminifera biozonation. Our findings have implications for the breakup of the Gondwana Supercontinent, as these incursions represent the earliest marine-derived flooding events in the inland basins of northeastern Brazil.

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Mercury (Hg) geochemistry of mid-ocean ridge sediments on the Central Indian Ridge: Chemical forms and isotopic composition

et al. 2022

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Mercury chemostratigraphy as a proxy of volcanic-driven environmental changes in the Aptian-Albian transition, Araripe Basin, northeastern Brazil

Cited by 10 publications

References 73 publications

Shell and long-bone histology, skeletochronology, and lifestyle of Araripemys barretoi (Testudines: Pleurodira), a side-necked turtle of the Lower Cretaceous from Brazil

Shell and long-bone histology, skeletochronology, and lifestyle of Araripemys barretoi (Testudines: Pleurodira), a side-necked turtle of the Lower Cretaceous from Brazil

Early Aptian marine incursions in the interior of northeastern Brazil following the Gondwana breakup

Mercury (Hg) geochemistry of mid-ocean ridge sediments on the Central Indian Ridge: Chemical forms and isotopic composition

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