Notes on the Permian Rocks of the Doncaster District

Mitchell, G. H.

doi:10.1144/pygs.22.2.133

Cited by 3 publications

(4 citation statements)

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“…Three of the four other reef GCR sites, Newsome Bridge Quarry, South Elmsall Quarry and Ashfield Brickclay Pit, may have bryozoan saccolithic cores but, if so, this structure has subsequently almost been obliterated by diagenesis; reefs at the fifth site, Cadeby Quarry, have a rather different structure and biota from the other three. Upstanding crags of reef limestone, not unlike those at Maltby, have been reported at Minney Moor (SK 519989), Conisbrough by Mitchell (1932a) and near South Anston (SK 525838), east of Sheffield, by Eden et al (1957). 4); others were noted by Edwards et al (1947) at Aberford (SE 4337) and Boston Spa (SE 4245).…”

Section: Discussionmentioning

confidence: 96%

“…Although the presence of unbedded masses of dolomite in the Cadeby Formation was mentioned by several authors, including Kirkby (1861) who recognized that they contained a sessile fauna that had probably grown in situ, these were first described as reefs by Mitchell (1932a). These reefs were subsequently documented briefly in a series of Geological Survey memoirs covering the Magnesian Limestone outcrop from Wetherby southwards (Edwards et ai., 1940(Edwards et ai., , 1950Mitchell et ai., 1947;Eden et ai., 1957) and their structure, composition and biota were discussed in greater detail by Smith (1974a, b;19S1b).…”

Section: Discussionmentioning

confidence: 99%

“…Although Mitchell (1932a) was the first to apply the word 'reef to unbedded or 'brecciated' bryozoan rock in the Wetherby Member, it is clear that Kirkby (1861, p. 315) recognized that the 'polyzoan beds' prohahly formed part of a sessile, organic community built up by and around ramose cryptostome bryozoans such as Acanthocladia. By their growth, the bryozoans gave rise to a variety of minor sub-environments that were occupied by, and sheltered, a more varied range of invertebrates than inhabited the surrounding more uniform grainstones; such forms include encrusting foraminifera and pedunculate small brachiopods.…”

Section: Discussionmentioning

confidence: 99%

“…Reefs are particularly abundant in parts of the area west of Doncaster and were first identified as such by Mitchell (1932a); the presence here of beds packed with bryozoans was however, recognized by Kirkby (1861) who inferred that they were the remains of prolific sessile benthic communities that would probably now be termed reefs. Mitchell et ai.…”

Section: Patch-reefs and Enclosing Stratamentioning

confidence: 99%

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Marine Permian of England

Smith¹

1995

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Patch-reefs and Enclosing Stratamentioning

confidence: 99%

See 2 more Smart Citations

Marine Permian of England

Smith¹

1995

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George Hoole Mitchell, 31 December 1902 - 11 March 1976

1977

Biogr. Mems Fell. R. Soc.

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G eorge H oole M itchell, who died in hospital at Greenock on 11 March 1976, was the Assistant Director in charge of the Geological Survey of Great Britain's work in Scotland from 1959 to 1967. Some time before this appoint ment, he had become distinguished for his geological work in the Lake District, Yorkshire and the English Midlands. Mitchell was born in Liverpool on 31 December 1902, the elder of two children of George Richard and Emma Mitchell. Both his parents were natives of Birmingham and they belonged to families thought to have migrated there to benefit from that city's nineteenth-century industrial prosperity. Mitchell's mother, Emma France (1877-1953), was the thirteenth and youngest child of the marriage of Hoole and Mary France; her father's name, Hoole, was one of those given to G. H. Mitchell and to his sister, Joyce M. H. Mitchell. Though G. H. was addressed at home as Hoole, his school friends and later his geological friends and even his wife, sister, sons and grandchildren called him 'Mick' or 'Mickie'. Hoole was certainly a forename of several of G. H.'s mother's ancestors and members of that family believed themselves to be related to Charles Hoole, the author of A new discovery of the old art of teaching schoole'; in four small treatises (1660). The four treatises were entitled respec tively: The petty schoole, The usher's duty, The master's method, and Scholastick discipline, and the whole book was reissued in 1913, edited by E. T. Campagnac and published by the Liverpool University Press. Reviews appeared in the Times Educational Supplement and in the Manchester ; in the latter newspaper, the reviewer (J. Dover Wilson) described the book as 'one of England's educational classics' and Hoole was categorized as a schoolmaster who tried 'to make the dry bones of grammar toothsome to those of tender years'. Mitchell's father, George Richard Mitchell (1874-1965), was the eldest of four children; his father was a pewterer of Irish extraction and his mother, a member of a family of twenty-two children, came from Ayrshire. So one appreciates Mickie's claim to having a quarter of Scottish ancestry and 'about' a quarter of Irish. George Richard Mitchell won a scholarship to King Edward's School, Birmingham, where he gained distinction in classics and was a good all-round cricketer and footballer. Subsequently he went to a school in Bridgenorth as a pupil teacher and later to Heversham School, Westmorland. There,

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The late Permian palaeogeography of north-east England

Smith¹

1989

PYGS

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SUMMARY All available information has been used in the preparation of a series of palaeogeographical maps showing the evolution of north-east England at the end of the early Permian and at intervals throughout the late Permian. Most of the area initially lay near the western fringe of the Southern North Sea tropical desert basin, much of which was flooded at the beginning of the late Permian so as to create the epicontinental Zechstein Sea. With continually oscillating relative sea levels and episodic differential subsidence, contemporary coastlines fluctuated widely whilst successive progradational carbonate shelves were constructed in the first two of four main cyclic sequences; the deposition of thick salt at the end of the second main cycle almost filled the basin, eliminating most of the earlier depositional topography and ensuring that carbonates and evaporites of the third and fourth cycles were formed in a less diverse range of coastal plain to shallow marine environments.

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Notes on the Permian Rocks of the Doncaster District

Cited by 3 publications

References 4 publications

Marine Permian of England

Marine Permian of England

George Hoole Mitchell, 31 December 1902 - 11 March 1976

The late Permian palaeogeography of north-east England

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