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Ireland

By
D. A. T. Harper
D. A. T. Harper
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M. A. Parkes
M. A. Parkes
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Published:
January 01, 2000

Abstract

Despite the relatively small size of the island, Ireland contains a huge diversity of Ordovician rocks and fossils developed across a variety of palaeotectonic terranes. The initial review by J. C. Harper (1949) of the Ordovician together with the Silurian rocks of Ireland covered 24 areas of Lower Palaeozoic rocks and confirmed the importance of the island in the development of geosynclinal models for the early Palaeozoic rocks of Britain (Jones 1938). Over 50 years later the Ordovician rocks of Ireland continue to provide critical data for plate tectonic and terrane models for this part of the Caledonian orogen, and in addition Ireland contains several smaller terranes not recognized elsewhere. Moreover many localities contain key shelly and graptolite faunas with critical taxonomic, biogeographical and biostratigraphical information. The first edition of the Ordovician correlation charts for Ireland included data for 13 columns, portrayed as a series of isolated inliers (Williams in Williams et al. 1972, fig. 10). Subsequent detailed work by individuals, research groups (including IGCP project 233) and fieldwork and compilations by the geological surveys of Ireland and Northern Ireland has necessitated an expansion to over 30 columns. In addition terrane analysis of the isolated and discontinuous outcrops of Ordovician rocks across the island (Hutton 1987; Harper & Parkes 1989; Murphy et al. 1991) has provided a collective framework within which to view the Ordovician development of Ireland.

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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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