Precambrian rocks of the southern Inner Hebrides–Malin Sea region: Colonsay, west Islay, Inishtrahull and Iona
R. J. Muir, W. R. Fitches, A. J. Maltman, M. R. Bentley, 1994. "Precambrian rocks of the southern Inner Hebrides–Malin Sea region: Colonsay, west Islay, Inishtrahull and Iona", A revised correlation of Pre-Cambrian rocks in the British Isles, W. Gibbons, A. L. Harris
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In the southern Inner Hebrides Malin Sea region between Scotland and Ireland, a sequence of metasedimentary rocks, known as the Colonsay Group, is in contact with an older deformed igneous complex regarded as basement and termed the Rhinns Complex (Fig. 19). Early workers correlated the basement with the late Arclhaean Lewisian Complex of NW Scotland and the Outer Hebrides (Wilkinson 1907; Cunningham-Craig et al. 1911; Bowes & Hopgood 1975; Macintyre et al. 1975). However, more recent work has shown that the basement rocks are quite different from Lewisian rocks and comprise a deformed, Palaeoproterozoic (1.9 1.7 Ga) alkaline igneous complex (Muir 1990; Muir et al. 1992)
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This second and completely revised edition of Special Report No. 6 provides a comprehensive review and report of work earned out since 1975. It emphasizes the relationship between, and the correlation of, the units in to which the Precambrian rocks of England, Ireland, Scotland, Wales and the Channel Islands have been divided The chapters also provide a comprehensive bibliography of the work on which the correlations have been based.