 | | Journal (article/letter/editorial) | | Basin (UK) D AV I D M . D. JA M E S ∗ School of Earth and Ocean Sciences, Cardiff University, Wales, UK...2013) Abstract – The Hirnantian stratigraphy of Wales is critically assessed against the global evidence...correlation of the basinal succession in Central Wales with the shelf sequences along the Tywi Lineament...first appearance of Normalograptus persculptus in Wales does not correspond with the base of the persculptus...Bala Lineament, the Variscan Front and the Central Wales Inliers. Keywords: Hirnantian, Welsh Basin, glacio-eustacy |  | | Journal (article/letter/editorial) | | and Moel Wnion, including the district around Tal y Fan mountain, Foel Lwyd and Drosgl, and extending...similarity in the east of the county. Thus, between Maes y Gaer and the Roman Road north of Foel Ganol is a wide...extends over the whole district. Garreg Fawr and Dinas, and the vast drift-covered stretch to the south...between the 1,250 and 1,500 feet contours north of Tal y Fan, which is possibly of similar origin to the 1...Gyrach north of Tal y Fan. (4) In the broad valley of the Afon Tafalog south of Tal y Fan. 1 H. Dewey, " |  | | Journal (article/letter/editorial) | | Professor of Geology in the University College of Wales, Aberystwyth. (Read December 19th, 1928.) [PLATE...mile south of Llanymawddwy, and is adjacent to the Dinas Mawddwy eountry.~ This district occupies an area...somewhat inaccessible, but the old mountaln-road from Dinas Mawddwy to Bala over Bwlch v GroGs (1790 feet above...3] BETWEEN LL~kNYMAWDDWY AND L L A N U W C H L L Y N . 243 Dyfi and its tributaries, while on the north...Llanuwchllyn. On the moorland, north-east of Bwleh y Groes, the streams run south-eastwards into Lake Vyrnwy |  | | Journal (article/letter/editorial) | | Pyrddin, Sychryd and Upper eynon Valleys, South Wales by D. G. JONES and T. R. OWEN Received 23 July 1955...belt forms part of the North Crop of the South Wales Coalfield and the regional dip of the Carboniferous...succession compares favourably with that of Carmarthenshire, as described by Ware (1939). (ii) The Lenisulcata...bands of mainly carbonaceous shale. In the Craig-y-Dinas district, three marine horizons and at least one...SOUTH WALES 235 (a) Basal Grit Group. This division is exposed most completely in the Craig-y-Dinas |  | | Journal (article/letter/editorial) | | PAPERS. Contributions to thb Geology ofNORTII WALES. By DANIEL S~ARPE, Esq., F.G.S. PLATES XII., XIII...March 6th, 1844.] TUE author made a tour in North Wales, having two objects principally in view: the fil~t...part of the Ludlow and Wenlock series ill North Wales, that it is by differences of colour or mineral...west of the Druid Inn, on the Holyhead-road, is a quarry of the same rocks, dippping E.N.E. 30 ° . These...the shales alternate with beds ~)f excel* At Tyn-y-Celyn,situate in this district of Ludlow shale, two |  | | Journal (article/letter/editorial) | | Ordovician and Lower Silurian strata around Dinas Mawddwy, Mid-Wales D. M. D. JAMES Shell Offshore lnc., P...Derwen Formation (Aeronian) immediately northeast of Dinas Mawddwy is reviewed and the evidence for strike...However strike faulting is newly proven west of Dinas Mawddwy and accounts for much of the rapid apparent...sedimentation was influenced by a basement fracture at Dinas Mawddwy. Structural reasoning and palaeocurrent...represents a classic contribution to the geology of Mid-Wales and demonstrates that the varied thickness and lithology |  | | Journal (issue) | | meetings June to July GA Field trips to Oman, South Wales Ethiopia- a traveller’s observations Book Reviews...children 21. Whitman’s Hill Geodiversity 23. South Wales Field Trip (part1) Cover picture: Folded Ramp in...emergency communications concerning field meetings (UK only). If you have to cancel on the day, or are lost...steeling ourselves for the return to the murk of the UK. a final denoument delivered on a sunburnt beach...Cretacious and the Paleogene. No other county in the UK possesses such a variety of stone. The Shaping of |  | | Journal (article/letter/editorial) | | even along the northern edge of “Armorican” South Wales, where low dips are a feature, a NE-SW grain is...the Drws-y-Coed area, Caernarvonshire. Geol. J. Vol. 7, Pt 1,1970 69 T. M. THOMAS In Wales the sequence...therefore be observed in all the upland areas of Wales where long smooth profiles are a rarity. O n many...the Glacial epoch and previous cycles of erosion. Wales is essentially an upland country, being a major...gabbroid dolerite cliffs of Moel-y-gest, Craig y Gesail, Allt Wen and Y Waun, all of SE-NW alignment. These |  | | Book | | ROMA NO -BRI TISH AND DARK AGE SETTLEMENT IN CARMARTHENSHIRE by G. J. WAINWRIGHT Qf!Ul\JtU Vltcnnruruu...TOWARDS THE COST OF THIS PUBLICATION AND TO CARMARTHENSHIRE COUNT Y COUNCIL FOR A CONTRIBUTION FROM THE WELSH...Archaeology in the University College bf South Wales and Monmouthshire read the bulk of the typescript...Savory and Mr. G. C. Boon of the National Museum of Wales. The great majority of the metal objects were treated...have been presented to the National l\t1useum of Wales) Cardiff) and to the County Museum, Carmarthen. |  | Schofield, D. I., Davies, J. R., Jones, N. S., Leslie, A. B., Waters, R. A., Williams, M., Wilson, D., Venus, J., Hillier, R. D. (2009) Geology of the Llandovery district. British Geological Survey, Keyworth, Nottingham. | Book | | Rights Settion, Briti:Sh c ~ologiJ;al Surve)~ K<'!Y"v-orLh, e-m;.1il ip.r@h$$.ac.uk You may quo~ e,.x1ra...orrepros.::nt'.ltion as to the (tu~ilit)~ ~cura<:y or .-;omplele.ness of Lhe information or its &uitabiJjly...sandstone deposits exposed in the inactive quarry at Pen y Dinas [627 356] which were used for construction...Orogeny (Soper and Hutton, 1984), is recorded in Wales by a ,najor unconformity and the absence of 'M.iddle...Stretton Fault; CTF Craig Twrch Fault; CWL Central Wales Lineament; DF Dynefor Fault; DVF Dulas Valley ·Fault; |  | | Journal (article/letter/editorial) | | Sheffield, Dainton Building, Brookhill, Sheffield $3 7HF, UK Abstract The albitisation of pelitic metasediments...adinolized argillaceous rocks with albite, chlorite and quartz-'spots' in a sericitic matrix. Mineralogical Magazine...published by Agrell (1939, Dinas Head, Cornwall); Davies (1956, Pen-y-Gader, North Wales) and, more recently...mineralogical data on the adinoles and related rocks at Dinas Head, Cornwall. All these examples describe an association...general sill or sheet form. The dolerites at Dinas Head and Pen-y-Gader are described as albitedolerites but |  | | Book | | ) PLATE I, FRONTISPIECE THE MINERAL WEALTH WALES AND ITS EXPLOITATION TREVOR M. THOMAS M.SC.,...the Geology Department of the National Museum of Wales have always been placed at the disposal of the author...Geography and Anthropology, University College of Wales, Aberystvryth, for his sustained interest during...Keeper of the Geology Department, National Museum of Wales, kindly assisted in the selection of some of the... 1 WEALTH AND COAL MINING IN THE SOUTH WALES II COALFIELD RECENT TRENDS GENERAL CONSTITUENT |  | | Journal (article/letter/editorial) | | I V . — O N THE GEOLOGY OP THE DISTRICT FROM CIL-Y-COED TO THE ST. ANNES-LLANLLYFNI HIDGK (CARNARVONSHIRE)...General. 2. Particular Area. III. EXPOSURES. 1. CrL-Y-CoED. A. Surface Features. B. Pre-Cambrian, the Rhyolitic...South-West. (iv) NorthEast. 2. PENTWR, CRAIG- Y-DINAS, AND BRYN-MAWR. A.Cambrian, (i) Basal Conglomerate...Pre-Cambrian, the Bhyolitic Series, (i) Craigy-Dinas. (ii) Eithinog Wen. (iii) Bryn-mawr. C. Summary...Tryfan. Conglomerate, Grits, Purple Slate. B. Bwlch-y-llyn and Mynydd Cilgwyn. Conglomerate, Grits, Purple |  | | Book (edition) | | roadstones by K. C. DUNHAM, D.Sc., S.D. (England and Wales) and A. G. MacGREGOR, M.C., D.Sc. (Scotland) LONDON:...GEOLOGICAL DISTRIBUTION OF R OADSTONES England and Wales (Fig. 1) 2 Scotland (Fig. 2) .. 4 PART I....teschenite Epidiorite Hornblende-schist Lamprophyre Quartz-dolerite Spilite GABBRO GROUP Basic diorite Basic...Gneiss Granite Granodiorite Granulite Pegmatite Quartz-diorite Syenite HORNFELS GROUP LIMESTONE GROUP...Felsite Granophyre Keratophyre Microgranite Porphyry Quartz-porphyrite Rhyolite Trachyte 2 SOURCES OF ROAD |  | | Report (issue) | | ,J.f.-i..- IA-,:.-1 .. c...i-.. 1,...- •""' Y-1<11/JL, ,l_._�._/�/ , L � I .-· __..., - ,....MUSEUlf OF PRACTICAL GEOLOGY. THE GEOLOGY OF NOR'fH WALES, llY A. C. RA�ISAY, F.R.S., LOCAL DIRr.cTOR OF...-Greenstone of Rhobell-fawr, &c.- 38 Talcose Schists of Dol-y-frwynog.-Coppcr and Gold Mines C.1uPTEn VIII. The...or Bala Beds South of Cader Idris, and between Dinas !fowddwy and Baia Lake 78 CHAPTRR XIV. The :Bala...Bettws-y-coetl, Moel-Siabod, Llyn-Ogwen, and Conway, and the Intrusive masses between Conway and Y -Foel-ft- |  | | Book (edition) | | OF ROADSTONES IN GREAT BRITArN 4 England and Wales 4 Scotland 6 Channel Islands 9 LIST OF SOURCES...county headings, with all the counties of England, Wales and Scotland in one alphabetical list. Within each...address of owner or occupier Name and situation of quarry, pit or works Type or types of rock, gravel or...teschenite Epidiorite Hornblende-schist Lamprophyre Quartz-dolerite Spilite 2 SOURCES OF ROAD AGGREGATE...Gneiss Granite Granodiorite Granulite Pegmatite Quartz-diorite Syenite Gritstone group Agglomerate Arkose |  | | Book | | KAT 21141 94. =o 3/2001. - [ 25 EXPLORING WALES ens SS) —Helyheas eC ANGLESEY Rhoscolyn> A...WAberdarons SNS rom, ¢ MONTGOMERYSHIRE ie gs — y BRECONSHIRE , | 4 Kidwelly - Talg arth, f a...Llantrisa Cowbridge Llantwit> Major- Ci EXPLORING WALES by WILLIAM CONDRY FABER London AND FABER -...ANF YDBRECONSHIRE MONMOUTHSHIRE GLAMORGAN CARMARTHENSHIRE HH HO NH eipeaereVigcs =w . PEMBROKESHIRB...summer from the cold hurry of business, and come to Wales.’ SHELLEY ILLUSTRATIONS 1. Puffin Island, Anglesey |  | | Report (edition) | | other dist,ricts. . Nomenclature: Silica-brichi, Dinas brick and G anister brick. Ganister mixture, Ground...rwickshire, Gloucestershire and Buckinghamshire - ,h Wales ,. VIll.-S1L1cA-RocK AND GANISTER (contd.) : Nort... IX.-S1LICA-Rocx AND GANJSTE& (contd.):-South Wales AND GANISTER 1oontd.): Scotland. x.-SILICA-ROCK...Bedfordshire. Buckinghamshire. Yorkshire. South Wales. Scotland 172 .. XIV.-DoLOMITE. Introduction....Derbyshire, Leicestershire, North Wales and Shropshire. Gloucestershire. South Wales and Monmouthi..hire. Scotland |  | Davies, J. R., Waters, R. A., Wilby, P. R., Williams, M., Wilson, D. (2004) Geology of the Cardigan and Dinas Island district - a brief explanation of the geological map. British Geological Survey, Keyworth, Nottingham. | Book | | T RESEARCH COUNCIL Geology of the Cardigan and Dinas Island district Su1111nary of the geological succession...GEOLOGICAL SURVEY Geology of the Cardigan and Dinas Island district a brief explanation of the geological...AlvlS, M, AND WJLSOK, Geology of the Cardigan and Dinas Island district a brief explanation of the geological...(including part o f Sheet 210) Cardigan and Dinas Island (England and Wales). D. 2003. © NERC 2004 All rights...J)l'Operty Ri$hts $,e.;tion, Bl'iti$h c;eol0&ical Su1v-,y, Keyworlh, e-mail ipr@bgs,;k.uk. You may quote extmtts |  | | Book | | Magazine Min.Rec. Mineralogical Record UKJMM UK Journal of Mines and Minerals Proc.Ussher Soc. ...Langford, Calstock Mount Mine, Perranuthnoe Greystone Quarry, Lezant (on silver) Achroite, a colourless variety...Fe+2)SSi 8O22(OH)2. W.Phillips (1819) 55-6. Carrick Du Quarry, St Ives Botallack Mullion Coverack Cadgwith Dolcoath...Lanlivery Clicker Tor Quarry, Menheniot Gt. Retallack Mine, Perranzabuloe Delabole Slate Quarry ADAMITE Zn2AsO4(OH)...NaAlSi3O8. Greg and Lettsom (1858) 113. Lanterdan Quarry, Tintagel Geevor Mine, St.Just Trewavas Head, Breage |  | | Book (edition) | | Galleries, London ISBN O85272 313 X ClO Printed in the UK for the British Geological Survey by Saxon Graphics...Graphics Ltd, Derby Cover illustration Cloud Hill Quarry, Leicestershire, excavated in steeply dipping Carboniferous...minerals produced in Britain, on an ex-mine or quarry basis, the total value is estimated at £21 796...and the major proportion of this output is from the UK Continental Shelf. However, there is a substantial...minerals. The value of minerals production on an ex-quarry basis does not truly reflect their ultimate value |  | | Journal (article/letter/editorial) | | Junction of a Part of the North Crop of the South Wales Coalfield by T. R. OWEN and D. G. JONES Received...Limestone along the eastern North Crop in South Wales are described. From their examination, it is suggested...Clydach Valleys on the North Crop of the South Wales Coalfield (Fig. 1). Over this area, previous workers...advance of a shoreline lying to the north of South Wales and in the emergence of a land area of considerable...block shallts. secondary chert and fine delrital quartz. 0-30 ft. "D,' l e n ttc ulcr- sands-tones, SohaJes |  | | Journal (article/letter/editorial) | | FEATURES. be visited includes a portion of Central Wales bordered by the coast from Towyn to the south of...Subsequen tly a genera l uplift of th e whole of Wales caused renewed excavation in those rivers which...Beds (Upper part) Gelli-Grin Calcareous Ash Pont-y-Ceunant Ash Chasmops and Nicolella-actonice fauna..._ . -- Narrt-y-Moch G;roup ~ < I Rafinesquina-hirnantensis fa una Foel-y-Ddinas Mudstones ~ ~...th e overlying dark slates is well-defined. In man y sect ions there is little or no ashy material above |  | Burt, C. E., Aspden, J. A., Davies, J. R., Hall, M., Schofield, D. I., Sheppard, T. H., Waters, R. A., Wilby, P. R., Williams, M. (2012) Geology of the Fishguard district - A brief explanation of the geological map Sheet 210 Fishguard. British Geological Survey, Keyworth, Nottingham. | Book | | auth ority t1�1ttOJtu1ilisi oned th.: work You m<\Y not copy or ad,l_pt this pubti.-:atio. n wiL.hou1...ologi<:al SuJVe;� K!,})n,.,.,Orth, �mail ipr€bgs.<�.uk. Yo u m<\Y quote <"xtracts of a C'-"M◊m1blc length \1.>itho...Trwyn lsaac in the Penyraber tvludstone and C,v1n-y r Eglwys tvludstone fonnations 17 Pebidian alkali-feldspar... the Cottntryside Council for Wales and the National Nluseutn of Wales. Considerable reliance has been...The district was surveyed as part of the Central Wales Mapping Project, partly funded by a grant from the |  | | Journal (article/letter/editorial) | | determined. VI.—ON THE GEOLOGY OF THE DISTRICT FUOH CIL-Y-COED TO THE ST. ANNES-LLANLLYFNI RIDGE (CARNARVONSHIRE)...SERIES.—(i) At the south-west end of the Craig-y-Dinas mass we find exposed a rock similar in every respect...respect macroscopically to that which is found at Cil-y-Coed. Unfortunately it cannot be followed far, as...land is completely under drift, the top of Craig-y-Dinas itself being capped by a thick layer of drift....(ii) Five hundred yards almost due north of Craig-y-Diuas, near the farm of Eithinog-Wen, a small amount |
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Dinas Quarry, Pen y Ddinas, Llansawel, Carmarthenshire, Wales, UK