By James L. Best, Paul B. Wignall
The Carboniferous Shannon Basin of Western eire has develop into some of the most visited box parts on this planet. It offers a great chance for studying quite a lot of historical sedimentary environments, together with carbonate shelf, reefs and dust mounds, black shales and phosphates, and a spectrum of deep sea, shallow marine, fluvio-deltaic and alluvial siliciclastic sediments. the world boasts vast outcrops and a few of the main popular sections via turbidites, large-scale delicate sediment deformation positive aspects and sediments that show a reaction to tectonic and sea-level controls.
This box advisor presents the 1st synthesis of the primary localities during this region of Western eire, and offers an simply available instruction manual that might advisor the reader to, and inside, a variety of sedimentary facies, permitting an figuring out of the evolving nature of the fill of this Carboniferous basin and the context of its sedimentary and tectonic evolution. The consultant summarizes fresh and new paintings within the sector via a number authors and descriptions problems with present debate in regards to the Shannon Basin and its palaeoenvironmental interpretation. the sphere advisor will locate large use in instructing and examine by means of educational researchers, specialist and beginner geologists, in addition to by means of 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 resources for A Field Guide to the Carboniferous Sediments of the Shannon Basin, Western Ireland
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).
Here we term it the CoMa model after its two principal proponents: Collinson and Martinsen. In essence, the CoMa model envisages business as usual between the Dinantian and Namurian phases of basin development. , 2003, p. 791) to persist, with shallower conditions lying to the north‐ east in northern County Clare. After the initial phase of fill by thick, black shales, the sandstones of the Ross Sandstone Formation turbidite system arrived from a source area to the north‐west and, having been deflected along the axis of the basin, aligned along the Shannon Estuary, then prograded along the basin floor.
2016 International Association of Sedimentologists. Published 2016 by John Wiley & Sons, Ltd. com/go/best/shannonbasin 16 The Shannon Basin: Structural Setting and Evolution 17 The purpose of this introduction is twofold; firstly to consider briefly the pre‐Carboniferous history of the area and how it might have influenced the siting of this depositional basin, and secondly to briefly review the subsequent deformational and metamorphic history that affects what is seen in these world‐famous exposures.
A Field Guide to the Carboniferous Sediments of the Shannon Basin, Western Ireland by James L. Best, Paul B. Wignall