 | | Report (issue) | | •' Llanbedr -f= 200 � � Aton Garr, 100 Dyffryn � Ardudwv O.t- � 0 I 1 I SCALE 2 3 I ··...Geological notes on popular walks 50 9 Barmouth to Hafotty mines 50 10 Panorama Walk 53 11 Roman Steps (Bwlch...48 26 Geology of the footpath from Barmouth to Hafotty manganese mines (No. 9) 5 1 27 Panorama Walk, geology...Association. Special care should be taken at old mine workings some of which may be in a dangerous condition...Formation (230-360m ) Barmou.th Formation (60-230m) Hafotty Formation ( 170.300m I :I: )> (:;; :;::JJ n |  | | Journal (volume) | | obtained from Llyn Du Bach Mine, Harlech, Merionethshire, Wales. National Museum of Wales Specimen No. NMW 2013...Cambrian manganese ore bed, Harlech, Merionethshire, Wales Tom F. Cotterell 39-51 Franklinphilite in veinlets...Cambrian manganese ore bed, Harlech, Merionethshire, Wales Tom F. Cotterell and Neil Hubbard 51-59 Chernovite-(Y)...blobs’ in Leicestershire, the focus shifts to North Wales with articles on the complex and intriguing mineralogy...earth element bearing mineral chernovite-(Y) in Wales. Volume 16 concludes with an excursion to the Lewisian |  | | Journal (article/letter/editorial) | | the Cambrian manganese deposits, Harlech, North Wales M. A. Bennett Department of Earth Sciences, University...the Harlech area, North Wales. It is most intense at the base of the Hafotty Formation where it forms...Gamlan Formation where it forms coticules (quartz-spessartine metapelites). Low-grade mineralization also occurs...the base of the Hafotty Formation, largely composed of Mn-Ca-Mg-Fe carbonates, spessartine and quartz, and...MUDSTONE BARMOUTH FM LWR. CAEREO CILAN GRITS HAFOTTY FM MULFRAN BEDS HELL'S MOUTH GRITS LLANBEOR F |  | | Book | | A Mineralogy of Wales RfCHARD E. BEYfNS Ocpartmellf o[Geolngy, Nmin11a/Museum of\Valcs, Cardiff AMGUEDDFA...Colliery, Ponh, Mid Glamorgan. National Museum of Wales specimen 48.264.GR 175. ex Cymmer Welfare Library...CE 6 I CES IN WALES 9 30 127 138 6 INTRODUCTION The mineralogy of Wales is diverse. with over...reveal the presence of additional species new to Wales. and perhaps new to the British Isles. It is also...completely new to cience will be discovered in Wales. as techniques for analysing specimens become ever |  | | Journal (volume) | | veinlets in the Cambrian manganese ore bed, Harlech, Wales Tom F. Cotterell, John S. Mason and Allan C. Dean...Trevor F. Bridges 61-65 A report on Westernhope Old Mine, Weardale, Co. Durham Trevor F. Bridges Journal...from around 40 to over 110, including the ‘first UK occurrences’ of a number of minerals, such as fornacite...Långban in Sweden, the Kombat Mine in Namibia, and the Mammoth St. Anthony Mine in Tiger, Arizona. • Production...Manchester University Museum; the National Museum, Wales; Stockholm Museum. 2 Cambridge, Loughborough, Manchester |  | | Book | | provided by: Amgueddfa Cymru (National Museum of Wales, Cardiff); British Geological Survey, Edinburgh...meneghinile Pengenna mine,St Kew,Cornwall; Shallowfield Bridge,SouthMolton,Devon Tynebottom mine,Alston.CUm~ria...CUm~ria mercury Chatsworth mine,Grassinglon, Yorkshire Severallocalities in theLakeDistrictandComw melacinnabar...theLakeDistrictan:iCorrr::a!I natrojarosite Wanlhwaite mine,StJohn'sin theVale,Cumbria SouthTerrasmine,StStephen-in-Brannel...Cumbria pharmaco!ite Wanlhwaite mine,StJohn'sin theVale,Cumbria Chatsworth mine,Grassington, Yorkshire p:cropharmacolne |  | | Book (volume) | | classical section through the Cambrian in South Wales. In the background is the type section of the Caerbwdy... . . . . . . . . .15 The Cambrian of Wales and England by A. W. A. Rushton ............ 43...1961). The Cambrian System, whose type area is Wales, was named by Sedgwick (in Sedgwick and Murchison... ruggedest and most complicated tract of North Wales.’ Woodward’s (1908, p. 93) account is delicately...giant strength on a barren primary district in Wales, which was he owns like “rubbing himself against |  | | Report (issue) | | Craig Llannerch-y-cawr, Claerwen valley, Powys, mid Wales. BOS Photo MN323 l l. © NERC I 999 Keyworth, Nottingham...Basement (Precambrian) rocks North-west Wales South-west Wales \Velsh borderland Cainbrian basin and shelf...Tudwal 's Peninsula Northern Snowdonia South-west Wales \Velsh borderland Ordovician basin and shelf deposits...South-west Wales Central \Vales and the Welsh borderland Silurian basin and shelf deposits North Wales Mid-Wales...Mid-Wales South Wales and tJ1e Welsh borderland Post-Caledonian cover Devonian Carboniferous Pennian, Triassic |  | | Report (issue) | | AROLWG DAEAREGOL PRYDAIN Regional geochemistry of Wales and part of west-central England: stream water ...GEOLOGICAL SURVEY. 1999. Regional geochemistry of Wales and part of west-central England: stream water....255 9) North-west England and North Wales 1997 (0 85272 307 5) Wales: stream water 1999 (0 85272 363 6)...0115-936 3200 e-mail: sales@bgs.ac.uk www.bgs.ac. uk Murchison House, West Mains Road, Edinburgh EH93LA...Stapledon Building, University of Wales, Penglais, Aberystwyth, Ceredigion, Wales SY23 3DB ,:r 01970-622541 Fax |  | | Book | | for 1:50 000 Geological Sheet 134 (England and Wales) Biostrettigraphy WT Dean F ~1artin Geochemist...University D ~1cCarroll, BA, PhD University of Wales, Swansect CONTRlBUTORS R £ Bevins, PhD, CGeol JM...naturelles de Belgique, Brussels Printed in the UK for The Stationery Office TJ105026 C6 07/02 V...Group is the . •ant Ffrancon Subgroup (part of the Gwynedd Supergroup of vVoodcock, 1990) which records sustained...Group includes tl1e sedimentary fonnations of the Gwynedd Supergroup of the district (Nant Ffrancon Subgroup |
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