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- == Penarth Group == ...il 12 Late Triassic (Rhaetian) bivalve (12) Rhaetavicula contorta from the Penarth Group at Waterloo, Co. Antrim. (P948078) ]] ...4 KB (535 words) - 12:53, 25 September 2017
- ==Penarth Group== The Penarth Group is named after the coast sections at Penarth, South Glamorgan, and is virtu ...8 KB (1,341 words) - 13:30, 30 January 2018
Page text matches
- ===== Penarth Group (PnG) ===== The Penarth Group consists of grey to black mudstones with subordinate limestones and sandsto ...1 KB (203 words) - 15:20, 28 July 2015
- == Penarth Group == ...il 12 Late Triassic (Rhaetian) bivalve (12) Rhaetavicula contorta from the Penarth Group at Waterloo, Co. Antrim. (P948078) ]] ...4 KB (535 words) - 12:53, 25 September 2017
- ...nchor Formation comprises grey dolomitic mudstones and siltstones, and the Penarth Group, which is nowhere thicker than 12 m, grades from calcareous marls and marly ...1 KB (189 words) - 08:35, 18 February 2016
- ...andstone’), the Mercia Mudstone Group (formerly the ‘Keuper Marl’) and the Penarth Group (formerly the ‘Rhaetic’). The latter is succeeded conformably by the Waterl ...2 KB (252 words) - 13:07, 25 September 2017
- | Horizon/Fault contacts refined<br>Top Penarth Group surface created from isopach ...888 bytes (131 words) - 07:32, 12 June 2015
- == Depositional environment (Mercia Mudstone Group, Penarth Group, Waterloo Mudstone Formation) == ...lded the approach of a marine transgression. At the outset, the succeeding Penarth Group was deposited during a period of fluctuating sea-levels in a shallow epeiri ...5 KB (754 words) - 11:49, 25 September 2017
- : 2 Top Penarth Group ...1 KB (170 words) - 09:04, 10 August 2015
- ...Anchor Formation to black, fossiliferous shales of the Westbury Formation (Penarth Group). The unconformity surface may be slightly irregular and small clasts of Bl ...4 KB (521 words) - 15:21, 26 July 2021
- : 5 Top Penarth Group ...1 KB (156 words) - 09:46, 10 August 2015
- The Top Penarth Group surface was constructed from isopach values. Values were gridded in Arc GIS ...1 KB (184 words) - 09:54, 10 August 2015
- | Penarth Group ...3 KB (267 words) - 15:02, 28 July 2015
- [[Image:P239116.jpg|thumb|350px|The Penarth Group at Chipping Sodbury railway cutting. Exposed during excavation in 1901, mud The Mercia Mudstone Group is disconformably overlain by the Penarth Group (PnG), formed by a continuation of the marine transgression which began wit ...5 KB (747 words) - 13:20, 2 December 2015
- | Penarth Group ...2 KB (212 words) - 09:30, 8 March 2016
- : 5 – Top Penarth Group ...3 KB (401 words) - 09:50, 10 August 2015
- : 2 – Top Penarth Group ...3 KB (437 words) - 09:08, 10 August 2015
- ...ts are well exposed along the coast of south Wales and north Somerset. The Penarth Group comprises dark grey mudstone with subordinate sandstone (Westbury Formation Image:P007705.jpg|Dark mudstone of the Penarth Group in the foreground, dips toward the camera, and rests on the Blue Anchor For ...7 KB (1,070 words) - 12:23, 19 June 2014
- | Penarth Group ...3 KB (382 words) - 08:47, 4 December 2015
- ==Penarth Group== The Penarth Group is named after the coast sections at Penarth, South Glamorgan, and is virtu ...8 KB (1,341 words) - 13:30, 30 January 2018
- ...ase of a scarp slope formed by the Blue Anchor Formation and capped by the Penarth Group. ...Anchor Formation to black, fossiliferous shales of the Westbury Formation (Penarth Group). The unconformity surface is commonly slightly irregular and small clasts ...7 KB (1,000 words) - 15:21, 26 July 2021
- ...ogical Survey of Great Britain'', 50, 51–69.</ref>. Between the top of the Penarth Group (Rhaetian) and the lowest bed in the Waterloo Mudstone Formation with the a ...2 KB (319 words) - 13:13, 25 September 2017
- ...de of the Moray Firth and the muddy debris-flow deposits at Stornoway. The Penarth Group also has a wide distribution but is everywhere thin. ...poradic thin interbeds of fine-grained sandstone; in the upper part of the Penarth Group the mudstone is more calcareous and contains an abundant bivalve fauna. ...12 KB (1,844 words) - 14:21, 29 January 2015
- | PENARTH GROUP <nowiki>*</nowiki>NB The White Lias Formation and Penarth Group appear in only a few cross-sections in the base of the model, very close to ...6 KB (910 words) - 09:40, 10 February 2016
- [[Image:P210568.jpg|thumb|right|300px|Mercia Mudstone Group and Penarth Group successions (late Triassic) — Aust Cliff, Avon. (P210568)]] [[Image:P211340.jpg|thumb|right|300px|Mercia Mudstone Group and Penarth Group successions (late Triassic) — Blue Anchor, north Somerset. (P2113 ...12 KB (1,906 words) - 13:28, 30 January 2018
- ...ia Mudstone Group is succeeded abruptly by grey and black mudstones of the Penarth Group. ...5 KB (786 words) - 12:46, 25 September 2017
- :: [[Penarth Group, Permo-Triassic, Bristol and Gloucester region|Penarth Group]] ...14 KB (1,810 words) - 11:36, 30 January 2018
- ...ic, a term also bearing such connotations, has been abandoned and the name Penarth Group has been substituted. Rhaetian, a standard stage of the Triassic Period is :: [[Penarth Group, Permo-Triassic, Bristol and Gloucester region|Penarth Group]] ...11 KB (1,778 words) - 13:31, 30 January 2018
- ...ormations; some may also be laterally equivalent to parts of the overlying Penarth Group. The use of informal and descriptive local names remains the most practical ...13 KB (1,836 words) - 15:26, 26 July 2021
- ..., M J, Cook, E, and Turner, P. 2002. Permian and Triassic red beds and the Penarth Group of Great Britain. ''Geological Conservation Review'', No. 24. (Peterborough ...5 KB (730 words) - 12:32, 6 May 2016
- The marine transgression at the end of Triassic times, during which the Penarth Group was deposited, was followed by the establishment of open-sea conditions, fi ...4 KB (598 words) - 13:27, 30 January 2018
- ...nd these beds have been assigned to the Westbury Formation of the Rhaetian Penarth Group. ...9 KB (1,371 words) - 19:36, 17 December 2022
- ...and grey mudstone with subordinate sandstones, siltstones and limestones (Penarth Group), which passes into a more restricted marginal facies. The strata were depo ...s, some of which are graded, were probably storm generated. The top of the Penarth Group is sharply overlain by ‘paper shales’ of the St Mary’s Well Bay Member, whi ...20 KB (3,008 words) - 09:53, 5 May 2016
- [[Image:P948988.jpg|thumb|right|300px|Depth to top of Penarth Group (after Whittaker 1985)<ref name="Whittaker1985"></ref>. Annotation as for F ...-Variscan structures were already established before the deposition of the Penarth Group and that subsequent movement resulted in their further development. The bro ...17 KB (2,498 words) - 13:31, 30 January 2018
- ...d east Co. Antrim basal Cretaceous strata rest on either the Late Triassic Penarth Group or Early Jurassic Waterloo Mudstone Formation [[Triassic, Northern Ireland| ...8 KB (1,217 words) - 12:57, 25 September 2017
- ...is transgression and in the ensuing shallow-water, marine environment. The Penarth Group rests disconformably on the Mercia Mudstone and is subdivided into two form ..., M J, Cook, E, and Turner, P. 2002. Permian and Triassic red beds and the Penarth Group of Great Britain. ''Geological Conservation Review'', No. 24. (Peterborough ...17 KB (2,606 words) - 12:33, 6 May 2016
- ...y of London'', 21, 15–44.</ref>, rests on the Waterloo Mudstone Formation, Penarth Group and the Mercia Mudstone Group. The fauna is dominated by bivalves, especial ...7 KB (1,011 words) - 12:28, 25 September 2017
- ...aways Clay Member, Fuller’s Earth Formation, Charmouth Mudstone Formation, Penarth Group and Mercia Mudstone Group are regarded as non-aquifers. Whilst water flow t ...9 KB (1,344 words) - 13:26, 2 December 2015
- The Lias Group rests conformably on the Penarth Group and, in the Vale of Glamorgan, lies mainly within the Hettangian and lower ...th mudstone flakes and concretionary dolomitic pebbles from the underlying Penarth Group, and locally, as at Witland, these deposits infill a markedly incised subst ...20 KB (3,006 words) - 09:53, 5 May 2016
- ...the grey to black, fossiliferous mudstone of the Westbury Formation of the Penarth Group. ...to black marine mud that formed the Westbury Formation at the base of the Penarth Group (Warrington and Ivimey-Cook, 1992). ...37 KB (5,384 words) - 15:26, 26 July 2021
- :[[Penarth Group, Triassic, Northern Ireland|Penarth Group]] ...38 KB (4,497 words) - 19:33, 29 September 2017
- ...n that small-scale galena-sphalerite-barite-calcite mineralisation affects Penarth Group, Lower Lias and Upper Inferior Oolite rocks in the Mendip–Bristol area, inc ...8 KB (1,321 words) - 13:21, 30 January 2018
- ..., M J, Cook, E, and Turner, P. 2002. Permian and Triassic red beds and the Penarth Group of Great Britain. ''Geological Conservation Review'', No. 24. (Peterborough ...13 KB (1,952 words) - 15:34, 5 May 2016
- ...llustrates a cross-plot of sonic and gamma-ray for the Mercia Mudstone and Penarth Group in the Winterborne Kingston borehole in South Dorset (see Figure 22). While ...20 KB (2,926 words) - 10:01, 26 May 2021
- ...borehole proved 90.5 m of probable Carboniferous Limestone underlying the Penarth Group, but beyond this its eastern extent and structure are uncertain. The axis a ...17 KB (2,541 words) - 13:53, 2 December 2015
- ...ase of a scarp slope formed by the Blue Anchor Formation and capped by the Penarth Group. ...9 KB (1,295 words) - 15:21, 26 July 2021
- | PENARTH GROUP ...15 KB (1,753 words) - 09:30, 8 March 2016
- ...he east-west ridge of Camel Hill, Sparkford, is due to a faulted upfold of Penarth Group to Blue Lias strata. There has been a tendency in this area to limit the te ...19 KB (2,957 words) - 13:27, 30 January 2018
- ..., M J, Cook, E, and Turner, P. 2002. Permian and Triassic red beds and the Penarth Group of Great Britain. ''Geological Conservation Review'', No. 24. (Peterborough ...28 KB (4,268 words) - 12:30, 6 May 2016
- ...ust above (EWrung_14; Centreline; EWrung_4; EWrung_5). Here the underlying Penarth Group and Mercia Mudstone Group strata (WLI, PNG, MMG) are locally correlated but ...17 KB (2,675 words) - 09:41, 10 February 2016
- ...M J, Cook, R, and Turner, P. (2002). Permian and Triassic Red beds and the Penarth Group of Great Britain, Geological Conservation Review Series, No. 24, Joint ...28 KB (4,101 words) - 14:24, 3 December 2019
- ...itby Mudstone Formation (Alder Carr); the Jurassic Blue Lias, and Triassic Penarth Group at cliff face seepages at Sedbury and the Carboniferous Limestone and Devon ...23 KB (3,564 words) - 14:01, 3 December 2019
- | Penarth Group ...52 KB (7,467 words) - 10:50, 3 December 2019
- ...ly lies on a somewhat eroded, commonly (trace fossil) bored surface of the Penarth Group. Subsidence continued in the basins, albeit at a reduced rate and with some ...72 KB (10,544 words) - 08:47, 6 August 2021
- ...Blue Lias Formation limestones over Westbury Formation and Cotham Member (Penarth Group) clays and mudstones, and Mercia Mudstone Formation. The gulls were frequen ...69 KB (9,798 words) - 09:21, 6 August 2021
- ...ncretions (cornstones), and the overlying sandy limestones of the Rhaetian Penarth Group are cut by basaltic sills of Paleocene age. Upper Cretaceous silicified lim ...59 KB (9,056 words) - 12:11, 19 July 2023
- ...re 3-6) with Jurassic–Triassic strata including the Blue Anchor Formation, Penarth Group and Blue Lias. The interbedded nature of these low permeability rocks creat ...133 KB (19,019 words) - 14:20, 16 April 2018