Fastnet, Celtic Sea and St George's Channel

Waters, C.N.. 2011 Fastnet, Celtic Sea and St George's Channel. In: Waters, Colin, (ed.) A revised correlation of Carboniferous rocks in the British Isles. Geological Society of London, 117-118.

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This offshore area broadly comprises two ENE-trending Mesozoic and Tertiary grabens. The northern graben comprises the Fastnet, North Celtic Sea and St. George’s Channel basins, separated from the South Celtic Sea and Bristol Channel basins by the Pembrokeshire Ridge–Labadie Bank (Fig. 17.1). The graben appear to represent the reactivation of Caledonian structures, e.g. the southern margin of the St. George’s Channel Basin was controlled by reactivation of the onshore Bala Fault System (Naylor 2001). The North Celtic Sea Basin locally developed in the hanging wall of a low-angle southerly dipping fault, which may represent the reactivation of the Variscan Front during Mesozoic extension (Gibbs 1987). However, traditionally, the Variscan Front has been taken as a poorly lineated feature extending across southern Ireland, north of the Munster Basin.

Item Type: Publication - Book Section
Programmes: BGS Programmes 2010 > Geology and Landscape (England)
Date made live: 10 Feb 2012 13:46 +0 (UTC)

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