Lithostratigraphy of the Windermere Supergroup, Northern England

Kneller, Ben; Scott, Robert W.; Soper, Nathaniel J.; Johnson, Eric W.; Allen, Peter M.

doi:10.1002/gj.3350290304

Cited by 33 publications

(5 citation statements)

References 32 publications

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“…Stratigraphical divisions follow Ingham (1966), and revisions in Kneller et al (1994), summarized in Fortey et al (2000). The few Silurian samples were taken from the Skelgill Formation.…”

Section: A Cautley Districtmentioning

confidence: 99%

“…8, p. 12). Cross Fell Inlier chitinozoans have previously only been reported from the northern part of the inlier, in the stratigraphically lower Skiddaw Group, which underlies the Borrowdale Volcanic Group, and not from the Dent Group (Arthurton & Wadge, 1981; lithostratigraphical revision according to Kneller et al 1994). 7).…”

Section: B Pus Gill Section (Cross Fell Inlier)mentioning

confidence: 99%

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Upper Ordovician chitinozoan biostratigraphy from the type Ashgill area (Cautley district) and the Pus Gill section (Dufton district, Cross Fell Inlier), Cumbria, Northern England

2005

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Seventy-five samples from the classic sections through the historical type area of the Ashgill Series in the Cautley district and along Pus Gill in the Cross Fell Inlier have been examined for chitinozoans. The results of this study allowed the recognition of five internationally recognized biozones and the definition of two new Avalonian chitinozoan zones. From bottom upwards, these are: the Fungochitina spinifera, the Tanuchitina bergstroemi?, the Conochitina rugata, the Spinachitina fossensis, the Bursachitina umbilicata sp. n., the Ancyrochitina merga and the Belonechitina postrobusta zones. One new species is described: Bursachitina umbilicata sp. n. This biozonation enables a correlation between the Cautley district and the Baltoscandia and Gondwana palaeocontinents based on chitinozoans. The Baltoscandic chitinozoan zones are, therefore, now better correlated with the British chronostratigraphical scheme, which is still widely used. It is stratigraphically significant that the base of the Ashgill in its type area does not fall within the Tanuchitina bergstroemi Zone, as widely believed before, but in the Fungochitina spinifera Zone. In addition, chitinozoans from the Onnian (Caradoc) section of the Cross Fell Inlier provide a link with the type Caradoc section in Shropshire.

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“…Stratigraphical divisions follow Ingham (1966), and revisions in Kneller et al (1994), summarized in Fortey et al (2000). The few Silurian samples were taken from the Skelgill Formation.…”

Section: A Cautley Districtmentioning

confidence: 99%

Section: B Pus Gill Section (Cross Fell Inlier)mentioning

confidence: 99%

Upper Ordovician chitinozoan biostratigraphy from the type Ashgill area (Cautley district) and the Pus Gill section (Dufton district, Cross Fell Inlier), Cumbria, Northern England

2005

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“…The base of the overlying Skelgill Formation is marked by a 1.0 metre thick limestone (at Backside Beck), the Spengill Member (Kneller et al, 1994), which is the 'basal beds' of Rickards (1970Rickards ( , 1988 and earlier authors (Fig. 6).…”

Section: Backside Beck Section Lake District Ukmentioning

confidence: 90%

A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician

Hounslow

Harris

Wójcik

et al. 2021

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…These rocks are broadly similar to outcropping folded and faulted metasedimentary rocks in north‐western England, including the Silurian Windermere Super Group (WSG). The WSG is dominated by low‐grade metamorphosed clastic sediments (Kneller et al, 1994; Moseley, 1978). The LBM, and WSG, were deformed and metamorphosed during the Silurian Caledonian Orogeny (about 420 Ma.)…”

Section: Discussionmentioning

confidence: 99%

Hinterland environments of the Late Jurassic northern Weald Basin, England

Barshep

Worden

2023

Geological Journal

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Reconstructing provenance in sandstones can be challenging, especially when the hinterland palaeogeology is unknown due to burial, diagenesis or weathering of the original outcrops. As sedimentary processes alter the distribution of minerals in the depositional environment, the use of multiple provenance methods reduces uncertainties, because, together, they can account for depositionally‐controlled textural and mineralogical re‐distribution in a basin. Here, we have applied petrography, X‐ray fluorescence geochemistry and sedimentology to understand the provenance of shallow marine Corallian sandstones with the aim of deducing the palaeogeology, palaeoenvironment and sediment distribution within the northern parts of the Upper Jurassic Weald Basin, onshore UK. The Corallian sandstones had a mixed mafic‐felsic (intermediate), metasedimentary recycled orogen source. The hinterland experienced significant physical and chemical weathering under humid conditions. Corallian sandstones were relatively more chemically mature up‐dip and more texturally mature down‐dip. Chemically unstable grains and heavy minerals were relatively concentrated down‐dip. Heterogeneous, sedimentologically‐controlled mineral distribution patterns highlight potential errors which may be made in deriving source‐area maturity. This study is significant as it illustrates the combined roles of provenance and deposition in controlling primary mineral distribution that then influenced the style of burial diagenesis. The work presented here emphasizes the importance of a multi‐proxy approach to improve provenance analysis.

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Lithostratigraphy of the Windermere Supergroup, Northern England

Cited by 33 publications

References 32 publications

Upper Ordovician chitinozoan biostratigraphy from the type Ashgill area (Cautley district) and the Pus Gill section (Dufton district, Cross Fell Inlier), Cumbria, Northern England

Upper Ordovician chitinozoan biostratigraphy from the type Ashgill area (Cautley district) and the Pus Gill section (Dufton district, Cross Fell Inlier), Cumbria, Northern England

A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician

Hinterland environments of the Late Jurassic northern Weald Basin, England

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