 | | Journal (article/letter/editorial) | | 260 Metasomatism of cherts on the north-west margin of Dartmoor, Devonshire By M. A. EL SHARKAWI1 and...Dartmoor granite in the neighbourhood of Meldon, near Okehampton, Devon. Development of biotite by contact...conversion of chert to coarse-grained calc-silicate hornfels. Changes are localized and controlled by structural...Carboniferous). They described outcrops of chert at the north-west margin of the Dartmoor granite t h a t had been...0 ) c :::::: ::::::::::::::::::::::: ~l~a-v~ Mine : : : : : : : : : : : : : : : : : : : : : : : : |  | Edmons, E. A., Wright, J. E., Beer, K. E., Hawkes, J. R., Williams, M., Freshney, E. C., Fenning, P. J. (1968) Geology of the Country around Okehampton (Explanation of One-inch Geological Sheet 324, New Series) Memoirs of the Geological Survey. Institute of Geological Sciences | Report (issue) | | SURVEY OF GREAT BRITAIN ENGLAND AND WALES Geology of the Country around OKEHAMPTON ( Explanation of One-inch...Beche. His 'Report on the Geology of Cornwall, Devon, and West Somerset' (1839) was the first memoir of the...other early Geological Survey maps of south-west England, are undated, but it is believed that they were...(1956), 'The Metalliferous Mining Region of South-West England'. The district formed part of the area in which...geophysical methods. In 1962 the newly formed South-West England field unit, successively under Dr. F. B. A. |  | | Report (issue) | | mineralisation in the vicinity of Belstone Consols Mine, Okehampton, Devon K E Beer, G S Kimbell and M J Bennett ...mineralisation in the vicinity of Belstone Consols Mine, Okehampton, Devon KE Beer, BSc, FIMM G S Kimbell, BSc, and...alisation in the vicinity of Belstone Consols Mine, Okehampton, Devon. Mineral Reconnaissance Programme Report...378173 BGSKEY G Fax T 060 77-6602 Murchison House, West Mains Road, Edinburgh EH9 3LA T 031-667 1000 Telex...Manager British Geological Survey Murchison House West Mains Road Edinburgh EH9 3LA • Contents: SUMMARY |  | | Journal (article/letter/editorial) | | mineralised zones on the north-western edge of Dartmoor, Devon T. J. BRZOZOWSKI BRZOZOWSKI, T. J. 1975. Very Low...mineralised zones on the north-western edge of Dartmoor, Devon. Proc. Geol. Ass .. 86 (3), 287-306. A Very Low...lithologically controlled anomalies running close to the Meldon Chert Formation of the Lower Carboniferous (Dinantian)...within the contact metamorphic aureole on the north-west edge of the Dartmoor Granite. The area is covered...farther south. The Meldon Chert Formation forms the top of the Dinantian in the Okehampton area and is a calcareous |  | | Journal (article/letter/editorial) | | and arsenides near the south shaft at South Terras mine, St. Stephen-in-Brannell, Cornwall. R. J. Davis...baryte, with tennantite in limestone, at Gortdrum mine, Oola, Co. Tipperary, Ireland. BM(NH) specimens...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soe. Cornwall), pp. I44-5, Anglesite...and ochreous, at West Turf Pits mine, Grassington Moor, Yorkshire. Also, at Treore mine, St. Teath, Cornwall...of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soc. Cornwall), p. 249. Arthurite |  | | Journal (article/letter/editorial) | | Field Meeting in North-West Dartmoor 1-3 October 1965 Report by the Director: W. R. DEARMAN Received...A party of twenty-seven members assembled in Okehampton on the evening of 1 October, when the Director...days. THE OBJECT Saturday, 2 October Okehampton and Meldon. The day was devoted to the study of the...north of Okeharnpton and the Lower Culm inlier at Meldon. The party drove first to Knowle Quarry (594962);1...R . DEARMAN The party then returned through Okehampton to the Bude road (A30 on to B3218), turning off |  | | Journal (article/letter/editorial) | | Easter Field Meeting in North-West Dartmoor 26-30 March 1959 Report by the Directors: W. R. DEARMAN and...north-west margin of the Dartmoor granite. The party of eighteen members assembled in Okehampton on the...Friday, 27 March Director: W. R. DEARMAN Okehampton and Meldon. The day was devoted to the examination...the neighbourhood of Okehampton and the inlier of the Lower Culm Measures at Meldon. The party drove first...in the neighbouring Okehampton Brickworks Quarry (594961). Returning to Okehampton the roadside exposures |  | | Catalog/List | | Spinel crystals from madgascar.Mottramite from England .Cut and polished Labradorite.Tacharanite and Tobermorite...ingots on a ship wreck in 1885 St Ives. Cornwall. England Rich fine grained black crystalline mass Mount...Greenish , sparse, acicular micros in Penbenhy Croft Mine, St cavities in quartz_________________ Hilary Cornwall... Rich white crusts on matrix. ALAMOSITE Rawhide Mine, Mohave Ixl £9 'A x A £3 1 xA Pb SiO/3_____________...Feldspar_____________ Black areas in actinolite Basinas Mine Sweden 1x1 £1.20 ALLANITE 9 Ce Y Fe SiO__________ |  | | Journal (issue) | | analysis of small quantities of tourmaline from S.W. England ; a preliminary report.” 76. *Dr. C. S. Exley :...South Devon.” 98. *Dr. W. R. Dearman : “Bismuth and Molybdenite from Meldon Quarry, near Okehampton, Devon...geology of Devon and Cornwall”. Dr. W. R. Dearman “Map showing geological research in S.W. England - 1965”...curves for soil clays from A- Sweden, B Scotland, C- West Africa. and the last category may indeed be conveniently...analysis of small quantities of tourmaline from S.W. England ; a preliminary report : by G. M. Power. In order |  | | Journal (article/letter/editorial) | | SKARNS FROM THE NORTH-WEST BORDER OF THE DARTMOORGRANITE,DEVONSHIRE,ENGLAND M. A. H. EL SHARKAWl...within the contact metamorphicaureole on the north-west margin of the Dartmoor granite. Tin is concentratedin...82% SnO2, centeredon the Red-a-yen Mine at Meldon near Okehampton,lies within a much wider zone of iron-metasomatism...samehorizonwas intermittentlymineralizedfrom Fanny Mine, near Bridestowe,to RamsleyMine at Sticklepathin...Geochemical prospecting(4) has shownrecentlythat at Meldon the same deposits havea lenticularshapeconfinedwithinthe |  | | Catalog/List | | Greenish, sparse, acicular micros in Penberthy Croft Mine, St 1cm £4 s AGARDITE Y Ca Cu As_O_O_H_____c_a_v_iti_e'-s-'in'-'-...215 69 3 11 Rich white crusts on matrix. Rawhide Mine, Mohave ½x½£3 _P_b_S_iO_13 _ _ _ _ _ _ _ _ _ _ _...Hornblende ALLANITE Black areas in actinolite Bastnas Mine Sweden lxl £1.20 CeYFeSiO Quite attractive blue-grey...FLUORESCENT ½ x ½ ins rock Fluorescent green Al SiO Devon England Large brown well formed dodecahedral Madagascar...Grey veins in and on matrix, some with Fallowfield mine, Ix½ ALSTONITE BaCaCO/3 Alstonite micros. Hexharn |  | | Report (issue) | | anomalies and mi nera I isation at Sou rton Tors, Okehampton, Devon REPORT No. 76/1 HMSO The Institute of...anomalies and mineralisation at Sourton Tars, Okehampton, Devon K. E. Beer and P. J. Fenning London: Her...anomalies and mineralisation at Sourton Tors, Okehampton, Devon. Rep. Inst. C;eol. Sci., No. 76/1, 38 pp....and ST-Sb Stratigraphic and Structural Details Meldon Chert Formation Crackington Formation Sedimentary...fluorescence analysis of pyrrhotite and pyrite from north-west Dartmoor • • • 111 36 Summary A spectacular |  | | Catalog/List | | x i £5 Rich wh ite crusts on matrix. Rawhide Mine, Moh ave County, ½ x ½ Arizona, U.S.A £3 Kragero...rful , 18 miles NNW of St I cm £6 Ives. Cornwall. England No location details !cm £4 Colo urless to yellow...Bastnas Mine Sweden Jx2 £6 2 x2 £1.20 2x2 £1 2 Ix ! £4 l x2 £8 New East Wheal Russell mine, Devon ,Eng...near Creston . Wyoming ,U.S. A Newhaven Sussex, England l x l £3 l x2 £5 While crystals well covering...£ 16 2x3 £25 l x l £3 San Jose Mine, Oruro, Bolivia Benallt Mine,Lleyn ,Wales l x2 £1.5 0 6x6mm £3 |  | | Journal (issue) | | ... 219 SYMPOSIUM. The structure of South West England A general view of the structure of Cornubia... north-west of Dartmoor. By E. B. Selwood. ... ... ... ... 237 The Structures of Mid-Devon and North...of North Devon. By S. Simpson. 249 Form and structure of the granites of South West England. By M. Stone... ... En-echelon veins in folds near Hartland, Devon (Abstract). By P. L. Hancock. ... ... ... 264 Early...Hobson. ... 264 Deformation analysis on the North Devon coast (Abstract). By K. Jeffery. ... ... ... 265 |  | | Journal (article/letter/editorial) | | RYBACK 42 Bell Road, Sittingbourne, Kent ME10 4EB, England AND PETER C . T A N D Y Department of Mineralogy...British Museum (Natural History), London SW7 5BD, England T n E supplementary lists of British Isles minerals...recently. The classic minerals of Cornwall and Devon are splendidly described by Embrey and Symes (1987)...known from the British Isles, and 580 or so from England. Of these latter, about 116 are listed here as...on minerals collected by A. de Hailer at Tynagh mine, Ireland, unpublished except in newsletters (Bulletins |  | | Report (edition) | | British Regional Geology I * South-West England r * FOURTH EDITION e ■ - O ” ..y 1835 Geological...British Geological Survey Front cover: Bull Point, Devon (For full explanation see p. ix) NATURAL ENVIRONMENT...and Mr. G. Bisson (District Geologist, South-West England), as well as Professor W. R. Dearman and the...advances in our knowledge of the geology of south-west England. Most of the great expanse of Carboniferous...as oil companies turn their attention to the seas west of Britain, so attention is increasingly focused |  | | Journal (article/letter/editorial) | | Upper Culm Measures THE IGNEOUS ROCKS (a) The Meldon District (b) The Petertavy District 4. THE STRUCTURE...Unit The Petertavy Unit The Lydford Unit . The Meldon Unit . Structural Interpretation (f) The Breccia-Fault...established within the country rocks bordering the north-west corner of the Dartmoor granite mass. Upper Devonian...two to three miles wide, which borders the north-west comer of the Dartmoor granite mass in Devonshire...from South Tawton on the north to Tavistock on the west of the granite (Fig. 1). Sedgwick & Murchison (1840) |  | | Journal (article/letter/editorial) | | Indium mineralisation in SW England: Host parageneses and mineralogical relations Jens... Shail, Robin K., Indium mineralisation in SW England: Host parageneses and mineralogical relations,...Ore Geology Reviews Indium mineralisation in SW England: host parageneses AC CE P TE D and mineralogical...Cornubian batholith, SW England 1 ACCEPTED MANUSCRIPT ABSTRACT The SW England ore region contains significant...Interestingly, we have no reason to believe that SW England is different to other regions with granite-related |  | | Journal (article/letter/editorial) | | GRANITES AND SOME ASSOCIATED ROCKS FROM SOUTHWEST ENGLAND I. A. MILLER AND P. A. MOHR New isotopic age determinations...determinations on all the granites of southwest England are presented and discussed in relation to the...INTRODUCTION The Hercynian granites of southwest England have in part been the subject of potassiumargon...the period of the Hercynian orogeny in southwest England in relation to other parts of Britain and Europe...concordant with the tectonic grain of southwest England, and six major domes have risen froin it to form | | | Report (edition) | | British Geological Survey Front cover: Bull Point, Devon (For full explanation see p. ix) •• ll On 1...Mr. G .. Bisson (District Geologist, South--West England), as well as Professor W. R. Dearman and the...advances in our knowledge of the geology of south-west England. Most of the great expanse of Carbonif�rous...as oil companies turn their attention to the seas west of Britain, so attention is increasingly focused...age-determinations of rocks of south-west . . . . . . . Facing England 1 112 List of Geological Survey |  | | Journal (issue) | | into the geology and geomorphology of south-west England Volume 6 Part 1 1984 Edited by G.M Power ...into the geology and geomorphology of southwest England and the surrounding marine areas; to hold Annual...Annual Conferences at various places in South West England where those engaged in this research can meet...University of Exeter, North Park Road, Exeter, Devon EX4 4QE Proceedings of the Ussher Society Volume...The Kyrtonia Press, 115 High Street, Crediton, Devon EXl73LG Set in Baskerville and Printed by Photolithography |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4...guite rich black masses in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins...MINERAL !I dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 up to 1.5cm £7 |  | | Journal (article/letter/editorial) | | Stromboli, S. Kozu & H. S. Washington, 235. Australia, West,Geologieal Survey,290. -pAECKSTROM, O., Basalts...' Capt., Obituary, 288. Ball, L. C, Silver Spur Mine, 518. Balsillie, D., Kinkell Ness, Fife, 498. Barke...278. Barrow, G., High-level Gravels, South of England, 140. Bartrum, J. A., Concretions in Auckland Harbour... 289. Devonian Fishes, North Devon, I. Rogers, 100. Rocks, North Devon, Dr. J. W. Evans, 547. Dewey,..."Terebclla" cancellata, F. A. Bather, 466. Dolerite and Hornfels, Auchinoon, T. C. Day, 527. Drake, Henry Charles |  | | Report (edition) | | GEOLOGICAL SCIENCES British Regional Geology South-West England (TH [RD EDITION) By E. A. Edmonds, M.Sc. M...world war, interest in the geology of south-west England has further inten ified. Much valuable work...done, and in 1962 the newly l"ormcd outh-we t England field unit of the Geological Survey began ix-inch...Mr. G. Bisson (District Geologi t. South-We t England, editor). Private workers whose publications have...the countryside and natural history of south-west England. An EXHIBIT illustrating the geology and scenery |  | | Book | | Igneous Rocks of South-West England THE GEOLOGICAL CONSERVATION REVIEW SERIES The comparatively small...and M. C. Gyopari S. Igneous Rocks of South-West England P. A. Floyd, C. S. Exley and M. T. Styles 6...Thames D. R. Bridgland Igneous Rocks of South-West England P. A. Floyd Department of Geology, University...study, or criticism or review, as permitted under the UK Copyright Designs and Patents Act, 1988, this publication...licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licences issued |
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