A reassessment of Arundian–Holkerian (Viséan) carbonates in South Cumbria, UK

Hounslow, Mark W.; Somerville, Ian D.; Cózar, Pedro; Chew, David

doi:10.1016/j.pgeola.2022.04.005

Cited by 5 publications

(7 citation statements)

References 38 publications

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“…The base of the Cf4δ foraminiferal subzone (late Arundian) is located at a horizon much lower down in the SCS successions than examined here (within the underlying Red Hill Limestone Formation; Hounslow et al 2022). It is estimated that the base of the Cf4δ subzone is ca.…”

Section: Investigated Sectionsmentioning

confidence: 67%

“…The succession at White Scar Quarry shows some lithological similarities with the Barker Scar section (Hounslow et al 2022). Archaediscus at concavus stage is recorded from sample WS27, indicating the Cf5α subzone (at 18.2 m in Fig.…”

Section: White Scar Quarry Sectionmentioning

confidence: 81%

“…1). Details of the facies analysis and sedimentological interpretation of these and other sections can be found in Hounslow et al (2022), as well as analysis of zircons and apatite for U-Pb geochronology from bentonitic levels in the White Scar section.…”

Section: Investigated Sectionsmentioning

confidence: 99%

“…17 m below the Grubbins Wood section (Fig. 5), using lithostratigraphic correlation of the clastic unit in the middle of the Raven's Member (upper Dalton Formation to adjacent sections; Hounslow et al 2022). The base of the Cf4δ subzone has only an approximate correspondence with the MFZ11 Zone defined in Belgium, correlating with its upper part (MFZ11γ subzone as defined in Cózar et al 2020a).…”

Section: Investigated Sectionsmentioning

confidence: 99%

“…A second more weakly developed clastic-rich interval in the middle part of the Raven's Member (Fig. 5), is in the upper part of bed A at Barker Scar (Hounslow et al 2022).…”

Section: Selected Foraminiferal Occurrences In the Scsmentioning

confidence: 99%

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A potential global chronostratigraphic boundary for the base of the middle Viséan

Cózar¹,

Somerville²,

Hounslow³

2023

nos

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High-resolution foraminiferal biostratigraphy of carbonates immediately below and near the base of the Holkerian Substage in three sections of the South Cumbria Shelf allows the recognition of the Cf5α and Cf5β subzones. The most complete section at Grubbins Wood is almost free of dolomitisation. At the White Scar Quarry and Barker Scar sections, minor faunal gaps are inferred at the base of one or both subzones, respectively. The Grubbins Wood section has the most limited exposure, whereas White Scar Quarry has extensive exposure of this interval, especially the basal horizons of the subzones, compared to Barker Scar. The Grubbins Wood section, because of its exceptional foraminiferal record is more suitable for the establishment of a coincident boundary stratotype for the mid Viséan and Holkerian boundary at the base of the Cf5β subzone. However, the Barker Scar section should be retained as the Holkerian unit stratotype for Britain, with the base of the Holkerian repositioned lower in the section, at the base of the Cf5β subzone. White Scar is a suitable unitparastratotype, filling data gaps due to possible faunal gaps and dolomitisation at Barker Scar. The rich foraminiferal assemblages allow good global correlation with other regional zonations, which if refined in other countries, would allow a more affirmative global chronostratigraphic basal boundary for the middle Viséan.

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Section: Investigated Sectionsmentioning

confidence: 67%

Section: White Scar Quarry Sectionmentioning

confidence: 81%

Section: Investigated Sectionsmentioning

confidence: 99%

Section: Investigated Sectionsmentioning

confidence: 99%

“…A second more weakly developed clastic-rich interval in the middle part of the Raven's Member (Fig. 5), is in the upper part of bed A at Barker Scar (Hounslow et al 2022).…”

Section: Selected Foraminiferal Occurrences In the Scsmentioning

confidence: 99%

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