By James L. Best, Paul B. Wignall
The Carboniferous Shannon Basin of Western eire has develop into probably the most visited box components on this planet. It offers an amazing chance for studying a variety of historic sedimentary environments, together with carbonate shelf, reefs and dirt mounds, black shales and phosphates, and a spectrum of deep sea, shallow marine, fluvio-deltaic and alluvial siliciclastic sediments. the realm boasts broad outcrops and a few of the main well known sections via turbidites, large-scale tender sediment deformation positive factors and sediments that show a reaction to tectonic and sea-level controls.
This box consultant offers the 1st synthesis of the primary localities during this quarter of Western eire, and offers an simply available guide that may advisor the reader to, and inside, a variety of sedimentary facies, permitting an realizing of the evolving nature of the fill of this Carboniferous basin and the context of its sedimentary and tectonic evolution. The advisor summarizes fresh and new paintings within the quarter by way of a number of authors and descriptions problems with present debate about the Shannon Basin and its palaeoenvironmental interpretation. the sector advisor will locate broad use in educating and examine by means of educational researchers, expert and beginner geologists, in addition to via utilized geologists, geophysicists and reservoir engineers who use those outcrops as analogues for subsurface reservoirs in lots of components of the world.
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Extra info for A Field Guide to the Carboniferous Sediments of the Shannon Basin, Western Ireland
In the only provenance study on the basin, Pointon et al. (2012) have dated detrital zircons from throughout the Namurian infill and found a range of age groupings. , 2012, p. 77). As there is no available source for these zircons north of the Shannon Basin, their presence unequivocally indicates that Gondwanan sediment was reaching County Clare with the Ross Sandstone Formation Basin Models 47 turbidity currents – clear and unequivocal support for foreland basin development early in the Namurian.
2012) have dated detrital zircons from throughout the Namurian infill and found a range of age groupings. , 2012, p. 77). As there is no available source for these zircons north of the Shannon Basin, their presence unequivocally indicates that Gondwanan sediment was reaching County Clare with the Ross Sandstone Formation Basin Models 47 turbidity currents – clear and unequivocal support for foreland basin development early in the Namurian. 4 What was the predominant progradation direction of the deltaic systems of the Central Clare Group?
2 Dinantian Basin History Broad regional subsidence began at the start of the Early Carboniferous (Tournaisian Series; see Figure. 2) over a broad area, with the result that shallow‐water heterolithic deposition became widespread (Strogen, 1988; Sevastopulo & Wyse Jackson, 2009). At this point, the Shannon Basin was not a clearly distinguishable topographic entity but instead was merely part of an extensive shelf sea extending across central southern Ireland. These facies pass southwards into a thick succession of clastic sediments (the Culm Facies) that accumulated in the South Munster Basin, a north‐west to south‐east trending trough (Price & Todd, 1988).