The carboniferous limestone of the blore‐with‐Swinscoe district, Northeast Staffordshire, with revisions to the stratigraphy of neighbouring areas

Parkinson, Donald; Ludford, Albert

doi:10.1002/gj.3350040113

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…The Milldale Limestone Formation appears to pass northwards into the lowest part of the Woo Dale Limestone Formation which has a shallow shelf aspect (Schofield & Adams, 1985). Much of this latter formation has been dated as Holkerian and is therefore younger than the mound complex but the lowest parts of the Woo Dale Limestone remain undated (Table 1) (Aitkenhead, Chisholm & Stevenson, 1985) and may represent the shelf equivalents of the sediments of the mound complex (Parkinson & Ludford, 1964).…”

Section: Location Stratigraphy and Previous Workmentioning

confidence: 99%

The anatomy of a deep water mud‐mound complex to the southwest of the Dinantian platform in Derbyshire, UK

Bridges

Chapman

1988

Sedimentology

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An elongate Waulsortian mud‐mound complex developed at Dovedale on a ramp to the southwest of a developing carbonate platform in Derbyshire during Chadian (early Viséan) times. The complex occupied an area of approximately 6 km2 and grew to a maximum relief of 80 m with longitudinal and transverse valleys developed near the southern margin. Five mound associated facies have been identified: mound core, mound flank (fine), mound flank (coarse), intermound (fine) and intermound (coarse). The mound core facies is a massive skeletal wackestone with comminuted sponge debris, foraminifera, ostracodes and crinoid debris set in a matrix of clotted micrite. The mound flank sediments display moderately inclined bedding surfaces. While the mound flank (fine) contains sponge debris, the mound flank (coarse) is dominated by articulated crinoid columnals, and includes algal‐encrusted micritized intraclasts and coarse peloids. The well‐bedded intermound (fine) facies is bituminous and micritic while the intermound (coarse) facies is composed of skeletal‐peloidal‐intraclast grainstones which locally contain calcified algae. Although the fauna is diverse, the density of colonization by metazoans was low and the supply of macrofossil debris modest. The clotted micrite texture is interpreted as the product of micro‐organisms which precipitated and trapped fine‐grained sediment. The mud‐mound complex is dominated by the bathymetric assemblages B and C proposed by Lees, Hallet & Hibo which on their model of the Belgian Waulsortian, indicate depths of between 220 and 280 m. Intercalation of assemblages B/C and C/D on the northern margin of the complex is interpreted as the result of local storm disturbance. A deep water drift is postulated to explain the NW‐SE alignment of the complex which probably fitted the ‘export model’ of Bosence, Rowlands & Quine. Beneath the sediment surface, phreatic flow eroded unlithified sediments and developed interconnected cavities which were filled by cement and sediment relatively eariy. Mound instability triggered the opening of fissures which filled with crinoid debris, peloids, indurated lithoclasts and micrite.

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Section: Location Stratigraphy and Previous Workmentioning

confidence: 99%

The anatomy of a deep water mud‐mound complex to the southwest of the Dinantian platform in Derbyshire, UK

Bridges

Chapman

1988

Sedimentology

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“…age. Prentice (1951) regarded the strata of Brownend Quarry as belonging to the Lower Caninia (C t ) Zone while Ludford (1951) and Parkinson & Ludford (1964) placed these rocks in the Upper Caninia (C 2 ) Zone. The non-sequence at the base of the Caninia Oolite in the South-West Province referred to above, lies within the Mestognathus beckmanni-Polygnathus bischoffi Assemblage Zone of Rhodes et al (1969).…”

Section: Carboniferous Conodonts In the South-western Penninesmentioning

confidence: 99%

Carboniferous Conodonts in the South-Western Pennines

Morris¹

1969

Geol. Mag.

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Correspondence 497 crystallised or fragmentary, which will, unless the units be all of the same composition, crystallography, form, and orientation, store strain energy if subjected to any form of loading. Ease of weathering of any given rock unit in a uniform environment is therefore not only dependent upon the lithology involved but also upon its previous loading history as reflected in the intensity of jointing and residual strain energy level which the rock unit may possess.It is of interest to note that the product of weathering by release of intergranular strain energy would consist of a loose aggregate of the various grains or crystals which comprised the initial rock mass. Once so released the individual mineralogy of the grains would determine their degree of survival. Such a mechanism of formation is easily applied to many of the weathering products of such widely contrasted rock types as granite and sandstone. The gritstone Edges of Derbyshire and Staffordshire show the production of a loose discretely granular sand the origin of which may be explained by u combination of conventional processes of weathering aiding the release of intergranular stresses, while the presence of the deeply rotted granite, or growan, over much of Dartmoor may also owe its origin, at least in part, to this mechanism. The occurrence of the growan on Dartmoor separating the upstanding masses of the relatively unaltered tors (Linton 1955) thus leads to the further consideration that perhaps the tors represent zones of low initial strain energy level. This, in turn, would then be reflected in the development of only a widely spaced joint system in these zones when the granite was uplifted to its present position, with little residual strain energy remaining after jointing to facilitate intergranular breakdown. In contrast, the areas of growan would then correspond to zones of high initial strain energy level with the later development of a tight joint system in which a high residual strain energy level remained and aided even further the breakdown of the internal rock structure.

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The carboniferous limestone of the blore‐with‐Swinscoe district, Northeast Staffordshire, with revisions to the stratigraphy of neighbouring areas

Cited by 9 publications

References 11 publications

The anatomy of a deep water mud‐mound complex to the southwest of the Dinantian platform in Derbyshire, UK

The anatomy of a deep water mud‐mound complex to the southwest of the Dinantian platform in Derbyshire, UK

Carboniferous Conodonts in the South-Western Pennines

The relationship of the Bowland shales to the pendleside limestone in the Clitheroe, Slaidburn and Sykes Anticlines

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