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Fishguard Group

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Journal Article
Published: 01 February 1981
Journal of the Geological Society (1981) 138 (1): 47-68.
...R. D. W. Lowman; T. W. Bloxam Abstract The petrology of the Fishguard Volcanic Group and associated rocks is described from a remapped area of Cambrian and Ordovician rocks between Fishguard and Newport, N Pembrokeshire (Dyfed). The volcanic rocks are mainly rhyolitic in composition and consist...
Journal Article
Published: 03 November 2016
Journal of the Geological Society (2016) 174 (1): 14-17.
...Richard Bevins; Nicola Atkinson; Rob Ixer; Jane Evans Abstract New U–Pb zircon ages from rhyolite samples of the Fishguard Volcanic Group, SW Wales, confirm a Middle Ordovician (Darriwilian) age for the group. One of the samples is from Craig Rhos-y-felin, which has recently been identified...
FIGURES
Journal Article
Published: 28 July 2015
Geological Magazine (2015) 153 (3): 410-425.
...BETHAN A. PHILLIPS; ANDREW C. KERR; RICHARD BEVINS Abstract The Fishguard Volcanic Group represents an excellently preserved example of a volcanic sequence linked to the closure of the Iapetus Ocean. This study re-examines the petrogenesis and proposed tectonic setting for the Llanvirn (467–458 Ma...
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Journal Article
Published: 01 February 1989
Journal of the Geological Society (1989) 146 (1): 113-123.
... 1984b 16 London Special Publication of the Geological Society 245 69 Lowman R. D. W. Bloxam T. W. The petrology of the Lower Palaeozoic Fishguard Volcanic Group and associated rocks E of Fishguard, N Pembrokeshire (Dyfed), South Wales Journal of the Geological Society, London 1981...
Journal Article
Published: 01 September 2003
Geological Magazine (2003) 140 (5): 549-571.
.... The biostratigraphy permits recognition of major differences in the sedimentary rock-sequence north and south of structures associated with the Fishguard–Cardigan Fault Belt. The Penyraber Mudstone Formation, disconformably overlying the Fishguard Volcanic Group (Llanvirn), is partly of multidens Biozone age...
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Journal Article
Published: 01 August 1991
Journal of the Geological Society (1991) 148 (4): 719-729.
..., certain silicic lavas and intrusions from the Porth Maen Melyn area appear not to have been derived from a tholeiitic parental magma, but rather have a calc-alkaline type chemistry, similar to older lavas of the Trefgarn Volcanic Group exposed a short distance to the south of Fishguard. These findings...
Image
Map showing the outcrop of the <b>Fishguard</b> Volcanic <b>Group</b> across north Pembro...
Published: 03 November 2016
Fig. 1. Map showing the outcrop of the Fishguard Volcanic Group across north Pembrokeshire, locations referred to in the text and the sampling sites for samples SW52 (Craig Rhos-y-felin) and SW54 and SW55 (both Fishguard Old Harbour). Based on compilation by British Geological Survey (2010) .
Image
Proposed model for the formation of the <b>Fishguard</b> Volcanic <b>Group</b>. The diagr...
Published: 28 July 2015
Figure 10. Proposed model for the formation of the Fishguard Volcanic Group. The diagram shows the tectonic configuration of the Iapetus slab subducting below the Avalonia continent, with rollback of the subducting slab facilitating the rifting
Journal Article
Published: 01 March 2008
Geological Magazine (2008) 145 (2): 199-214.
... England. In the Cardigan area, the Penyraber Mudstone Formation is the lowest sedimentary Caradoc formation and rests unconformably on the Llanvirn Fishguard Volcanic Group. It consists mainly of grey mudstones, with the exception of the coarser sediments of the basal Castle Point Member...
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Bivariate diagrams for representative trace elements and incompatible trace...
Published: 28 July 2015
the geochemical trend of the Fishguard Volcanic Group.
Series: Geological Society, London, Special Publications
Published: 01 January 2002
DOI: 10.1144/GSL.SP.2002.194.01.08
EISBN: 9781862394421
..., with predictions for the evolutionary patterns to be expected. The available global data subdivided by taxonomy (e.g. Sepkoski 1995 ) appear to be consistent with these predictions regarding the differences in diversity changes between ecological groups. The hypothesis potentially allows explanation...
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Journal Article
Published: 01 April 2019
Mineralogical Magazine (2019) 83 (2): 319.
... pianist and electronics enthusiast. He died on the 23rd January 2019. References Lowman R.D.W. and Bloxam T.W. ( 1981 ) The petrology of the Lower Palaeozoic Fishguard Volcanic Group and associated rocks E of Fishguard, N Pembrokeshire (Dyfed), South Wales . Journal...
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Journal Article
Published: 01 November 2000
Geological Magazine (2000) 137 (6): 711-712.
... (Treffgarne, Fishguard and Skomer Volcanic Groups) and P. Brenchley discusses the subaerial pyroclastic deposits in the Welsh borders. The volcanic rocks of Mid and North Wales are dealt with by D. Woodhall and M. Smith. They have produced comprehensive site descriptions for the predominantly short-lived...
Journal Article
Published: 01 April 1998
Journal of the Geological Society (1998) 155 (2): 389-399.
... D.Q. Bassett D. Bassett M.G. The Pleistocene succession and related landforms in north Pembrokeshire and south Cardiganshire Geological excursions in South Wales and the Forest of Dean 1971 South Wales Group Geologists’ Association 260 266 Bowen D.Q. Kidson C...
Journal Article
Published: 01 October 1988
Journal of the Geological Society (1988) 145 (5): 759-775.
.... Bloxam T. W. The petrology of the Lower Palaeozoic Fishguard Volcanic Group and associated rocks E of Fishguard, N Pembrokeshire (Dyfed), South Wales Journal of the Geological Society, London 1981 138 47 68 Lynas B. D. T. The Cambrian and Ordovician rocks of the Migneint area, North...
Book Chapter

Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/SR24.4
EISBN: 9781862396920
... The Llandeilian Stage has its type area in the vicinity of the town Llandeilo ( Williams 1953 ) (Column 5), and is here considered a subdivision of the Llanvirn Series. The Llandeilian is typified by the ‘Llandeilo Flags’ of Col. 5 now renamed the Golden Grove Group by Sutton et al. (1999 , p. 10...
FIGURES
Series: Geological Society, London, Geology of Series
Published: 01 January 2006
DOI: 10.1144/GOEWP.3
EISBN: 9781862393882
... to North Wales. Fig. 3.40. Reconstruction of the Fishguard–Cardigan trough (from Davies et al. 2002). Reproduced with permission of the British Geological Survey@NERC. All rights reserved. IPR/60-06C. The second evolutionary event occurred at, or just after, the start of the Ashgill when...
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Journal Article
Journal: Geology
Published: 01 November 2005
Geology (2005) 33 (11): 845-848.
... lava and isolated pillow brecicia of rhyodacitic composition from the Fishguard Volcanic Group, Lower Ordovician, S.W. Wales, United Kingdom : Journal of Geology , v. 87 p. 193 - 201 . Bloomer , S.H. , and Stern , R.J. , Shipboard Party , 2001 , Mantle inputs to the subduction...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.180.01.21
EISBN: 9781862394285
... ). This paper proposes three phases of structural growth and sedimentary response in Late Devonian time, and indicates the probable continued presence of a basin boundary to the south in the first phase. Use is made of contrasting groups of facies associations and their inferred environments of deposition...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 1975
AAPG Bulletin (1975) 59 (4): 573-617.
... with a nationalized industry. A total of 37 licenses covering 106 blocks was issued to 61 companies in June 1970; 88 of these blocks were in the North Sea where the best prospective areas went to groups with strong British interests. In these first three allocations of production licenses, due regard was paid...
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