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Book Chapter

The northeast Ox Mountains inlier, Ireland

By
I. S. Sanders
I. S. Sanders
Department of Geology, Trinity College, Dublin 2, Ireland
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Published:
January 01, 1994

Abstract

The northeast Ox Mountains inlier forms an ENE-trending, 40km long, narrow, arcuate ridge of bare, psammitic hills which passes to the southeast of the town of Sligo in northwest Ireland. (It lies to the northeast of the area of Fig. 16 shown on Fig. 13 and ornamented tentatively as Grampian Group in Chapter 4). It is surrounded by Lower Carboniferous sediments except at its western end where a poorly exposed fault, the Ladies Brae fault, brings it against pelitic rocks of inferred Dalradian age in the central Ox Mountains inlier (Lemon 1971; Phillips et al. 1975; Chapter 4, this volume).

Lithologically the inlier comprises migmatitic psammites, minor pelites and rare marbles, with locally important early ultrabasite, metabasite and metagranitoid bodies, and late granite pegmatites. A stratigraphical succession has not been established; Lemon’s (1971) map shows undifferentiated ‘Moine feldspathic granulites’, although Pyne (1972) mapped three formations, a pelite sandwiched between two psammitic units, to the west of Collooney.

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Contents

Geological Society, London, Special Reports

A revised correlation of Pre-Cambrian rocks in the British Isles

W. Gibbons
W. Gibbons
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A. L. Harris
A. L. Harris
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Geological Society of London
Volume
22
ISBN electronic:
9781786202857
Publication date:
January 01, 1994

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