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Welsh Borderland

By
R. A. Fortey
R. A. Fortey
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A. W. A. Rushton
A. W. A. Rushton
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Published:
January 01, 2000

Abstract

Successions to either side of the Linley–Pontesford fault display important differences. East of this structure (Columns 35–37) the Caradoc strata rest unconformable on Precambrian to Tremadoc formations, while westerly successions (Columns 33–34) display early to mid-Ordovician strata. Taken together, the Ordovician rocks on the margins of Wales are not only classical, but afford the best-preserved faunas, and thick pre-Ashgill strata. The Geological Survey has published Memoirs covering much of the area (Pocock et al. 1938; Greig et al. 1968; Cave & Hains in press). Following Whittard’s (1955–67) monograph on the trilobites, the Shelve area graptolite succession has been described by Strachan (1986) and Hughes (1989), and the brachiopods by Williams (1974). Whittard’s map was published by W. T. Dean (Whittard 1979) and the stratigraphical terminology used in the column follows subsequent revision by Lynas et al. (1991).

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Contents

Geological Society, London, Special Publications

A revised correlation of Ordovician Rocks in the British Isles

R. A. Fortey
R. A. Fortey
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D. A. T. Harpe
D. A. T. Harpe
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J. K. Ingham
J. K. Ingham
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A. W Owen
A. W Owen
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M. A. Parkes
M. A. Parkes
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A. W. A. Rushton
A. W. A. Rushton
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N. H. Woodcock
N. H. Woodcock
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Geological Society of London
Volume
24
ISBN electronic:
9781862396920
Publication date:
January 01, 2000

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