I. A. J. MacCarthy, 1995. "Devonian and Carboniferous Successions of the Munster and South Munster Basins, Southern Ireland", Irish Carbonate-Hosted Zn-Pb Deposits, Kerr Anderson, John Ashton, Garth Earls,, Murray Ritzman, Simon Tear
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INTRODUCTION AND SUMMARY GEOLOGY
Devonian and Carboniferous sedimentary rocks are extensively preserved in southwest Ireland along the coastal zone between Kerry Head and Hook Head (Fig. 1) and exhibit a complex sedimentary history. Initial basin development may have taken place in the Dingle Peninsula region where a Lower-Middle Devonian succession accumulated in a localized basin known as the Dingle Basin. To the south, the northeastsouthwest trending Munster Basin (Figs. 2a and 2b) developed as a half graben in response to north-south crustal tension (Naylor and Jones, 1967; Naylor et al., 1981). The Munster Basin contains in excess of 7km of dominantly non-marine Devonian sediment (Fig. 2c) with the oldest known sediments being of late Middle Devonian age (Clayton and Graham, 1974; Russell, 1978; Higgs and Russell, 1981). The base of this succession is exposed around the basin margin and rests with sharp angular unconformity upon highly deformed Lower Paleozoic rocks (Capewell, 1956; Colthurst, 1978; MacCarthy et al. 1978; Clayton et al., 1981; Gardiner and Home, 1983; MacCarthy, 1983).
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Irish Carbonate-Hosted Zn-Pb Deposits
This paper describes the stratigraphy, basin evolution, and structural geology of Ireland so that the hydrothermal processes which formed the deposits can be placed in a geological context. Informal regional nomenclature are used throughout this paper to provide a clearer overview, rather than the myriad of existing local formation names (see Jones and Earls, this volume). The stratigraphy, together with series and stage designation and available radiometric ages, is presented in Figure 1.