 | | Journal (article/letter/editorial) | | information obtained by core sampling of the solid rock underlying the loose deposits on the floor of the...north-west of Cornwall and of nepheline phonolite from Epson Shoal, 6 miles east of the Wolf Rock. Other samples...in the northern part of the Celtic Sea (between Cornwall and Ireland), the loose late Tertiary and Quaternary...samples of older strata in the western waters, and the rock exposed in several submarine banks lying off the...the core obtained did not penetrate to the solid rock or no core was obtained at all, are GEOL. MAG. VOL |  | | Journal (article/letter/editorial) | | seem to throw an3-light on the Eocene geology of Cornwall, nor of any part of the area west of Dartmoor...unlike anything that I had expected to find in Cornwall, that I examined it closely, taking away samples...that scattered Chalk-flints were not uncommon in Cornwall, I could not understand why so many had collected...by Naturalists that we have no flints native in Cornwall, but this is a mistake. Betwixt the towns of Penzance...far f r o m a n y e x p o s u r e of Cretaceous rock, t h e y are s u b a n g u l a r ; a n d t h e y |  | | Journal (article/letter/editorial) | | A Note on the Nosean Phonolite of the Wolf Rock, Cornwall By C. E. TILLEY '""T'HE first systematic descriptions...descriptions of the nosean phonolite of the _L Wolf Rock were given by Allport (Geol. Mag., 1871, p....247; 1874, p. 462). Later a fuller account of the rock was provided by Teall in his British Petrography...Petrography (1888, pp. 367-368). Since that time the rock has been repeatedly figured in text-books of petrography...1871), regarded as a type example of a more sodic phonolite chemically comparable with the plutonic mariupolite |  | | 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...Hercynian orogeny, are discussed. Age data on the Wolf Rock and Epsom Shoal phonolites are presented; their...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 |  | | Journal (article/letter/editorial) | | course of work on the Pliocene deposits of West •^ Cornwall, the writer had occasion to search a wide area...that increasingly rare but fascinating rock, the Wolf Hock phonolite. Inquiries were mainly confined to the...places for securing such material, apart from the rock itself, i.e. at the cottages of fishermen accustomed...Society of Cornwall, Mr. J. B. Cornish, that excellent specimens of the Wolf Rock phonolite, Longships...novelties to adorn his domestic mantelpiece. The Wolf Rock phonolite is classical and calls for no further remark |  | | Journal (article/letter/editorial) | | North, Geology of, 231. , South, Diamantiferous Rock of, 421. Agassiz, L., Obituary Notice of, 47. Aitken...Carboniferous Dolerites, 424; Note on the Phonolite from the " Wolf Rock," 402. .Alluvium of Nottinghamshire...Park, 240. Collins, J. H., Mining District of Cornwall and West Devon, 137, 138. Columnopora, 253. Colvin...Congeria Beds, 325. Corals, New Carboniferous, 556. Cornwall, Detrital Tin-ore of, 177. Corydalis, 339. Corundum...South-west of England, 246. Crocodilus Cantabrigiensis, 427. Croll, J., On the South of England Icesheet, |  | | Journal (article/letter/editorial) | | Ludlovian Rao, 237. Rocks, C. H. Holland, 230. Cornwall and Devon, Structure of, E. M. L. Hendriks, 253...nov., Cross-Folding in the Gramscatho 326. Beds, Cornwall, J. L. M. Lambert, Biscutum testudinarium sp....South Wales, 442. Hendriks, E. M. L., Structure of Cornwall and Devon, 253. Hey, R. W., Pleistocene Deposits... L. M., Cross-Folding in the Gramscatho Beds, Cornwall, 489. Laurencich, L., see Howe, H. V. Le Bas,...Plunging Recumbent Folds, 137. Nosean Phonolite of the Wolf Rock, C. E. Tilley, 503. O Oblique Slip Faulting |  | | Journal (article/letter/editorial) | | Helford River, Cornwall LE BAS, M. J. The Term Eucrite TILLEY, C. E. A note on the Nosean Phonolite of the Wolf...Wolf Rock, Cornwall CALLOMON, J. H. The Ammonite Zones of the Middle Jurassic Beds of East Greenland...A Summary of Present Views on the Structure of Cornwall and Devon, 3, 253-257. HEY, R. W. Pleistocene...Cross-Folding in the Gramscatho Beds at Helford River, Cornwall, 6, 489-496. BAS, M. J. The Term Eucrite, 6, 497-502...the Age of the Main Orogenic Phase in Devon and Cornwall, 3, 201-208. STARKEY, JOHN. Chess-board Albite |  | | Journal (article/letter/editorial) | | opinion of geologists familiar with the West of England, who generally consider the Lundy Island granite...be of the same age as the granites of Devon and Cornwall, it was thought desirable to settle the question...important centres of intrusion may be inferred from the rock types and structures presented by the various masses...masses and of these may be mentioned the Wolf Rock (phonolite) south of Lands End, Lundy Island (granite)... Some ! Some ! Much | Some Some — : : West of England ! Much ! Some j Some \ Much i Much Some Some • |  | | Journal (article/letter/editorial) | | ar,r,q'r,rZoNrNc Nephelines in two specimensof phonolite from the Schlossberg,Briix, Czechoslovakiawere...with analysesof nepheline from the Wolf Rock phonolite Figure -Cornwall. A photograph of a nephelinecrystal...of iron for aluminum seemsmore iikeil-. rn the phonolite specimensthere erretwo separate features of the...Or37for 88-16 (centers); and Orar for the Wolf Rock phonolite. These values represent estimated bulk compositionsonly...microscopical structure and composition of a phonolite trom the "Wolf Rock". Geol.Mag 8,247 250 BnNNrsren, F. A |  | | Journal (article/letter/editorial) | | Fras granite batholith and the surrounding country rock is proposed from interpretations of magnetic, bathymetric...near the anomaly (marked D) is caused by the bed-rock, and not a sandwave, an example of which can be...SWIDS=South West Ireland Dyke System; T=Trègorrois; WR=Wolf Rock. The forward modelling method was used, in which...(Morris 1974). In addition, the metamorphosed country rock at the margin of the dykes may be more magnetic...expected. Dykes may erode more readily than the country rock, as happens with the Tertiary dolerite The period |  | | Book | | Slates Gramscatho Beds Igneous rocks Cretaceous Phonolite Permian Quartz-porphyry, felsite and microgranite...district featured on Maton 's geological map of Cornwall in 1797 and accounts, both of the minerals and...youngest ig neous rock in the area is the early Cretaceous phonolite of Wolf Rock. Small outcrops of...Memoir for 1: 50 000 geological sheets 351 and 358 (England and Wales) LONDON: HER MAJESTY'S STATIONERY OFFICE...British Geological Survey, Sheets 351 and 358 (England and Wales). Authors A J J Goode, BSc and R T Taylor |  | Allen Howe, J., Teall, J.J.H., Ussher, W.A.E., Allen, H.A., Cantrill, T.C., Dixon, E.E.L., MacAlister, D.A., Hall, T.C. (1908) Visit to the museum of practical geology, Jermyn Street. Proceedings of the Geologists' Association, 20 (6) 467-472 doi:10.1016/s0016-7878(08)80299-4 | Journal (article/letter/editorial) | | of the principal mining region of the West of England. This is the district comprised in the recently...were formerly more widely represented in South Cornwall. Pxoc. GEOL. Assoc., VOL. XX, PART 6, 1908.J 33...slates, crush-breccias, and other dynamically formed rock types. The greenstones, all of which were intruded...developed. The granite is the most important igneous rock in the region. According to Mr. Teall it was intruded...of contact-metamorphism, and that the west of Cornwall has long been known as a typical region for phenomena |  | | Journal (article/letter/editorial) | | 462 S. Allport—On Phonolite from the " Wolf Hock." Ninth.—The deposition of the Boulder-clay and Moraine...at the present time. V.—NOTE ON THE PHONOLITE FROM THE " WOLF ROCK." By 8. ALLFORT, F.G.S. I N the GEOLOGICAL...composition and structure of a Phonolite which forms the mass of the Wolf ftock lying between the Land's...that there can be no doubt of its presence in the rock ; the mineralogical composition of which is thus...a better and more characteristic specimen of the rock than those previously in my possession. It is in |  | | Report (issue) | | of tl1e sea-floor bet,veen the soutl1 coast of England and Brittany. Many scientists have contributed...sediments. Thus it has been possible to sample the solid rock floor extensively, giving the resulting map an unusually...BIBLIC)GR"<\I"l-IY 11 ILLUSTRATIONS Fig. 1. Rock sample stations in the English Channel manned by...square nautical miles (SO 0 0 0 km2 ) of the solid rock floor of the Western Approaches to the English Channel... N y lw SCALE , 0 ,o' 5• sd 4• ••• 3• Rock sample stations manned by the Bristol University |  | | Journal (article/letter/editorial) | | Agriculture of Scotland, 271; of the New Forest, 271; of England and Wales, 227. Aitken, J., On Faults in Drift...Microscopical Structure and Composition of a Phonolite from the " Wolf Rock," 247; On the Eelative Ages of Igneous...at, 236. Ateleoeyatites Huzleyi, 72. Atlas of England, Geological, 432. Australia, Fossil Mammals of...the Post-Tertiary Deposits of New Canada and New England, 60. Bristol Naturalists' Society, 320. Bristow...Collings, J. H., Handbook to the Mineralogy of Cornwall and Devon, 569. Colorado, Geological Report on |  | | 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...has improved recently. The classic minerals of Cornwall and Devon are splendidly described by Embrey and...known from the British Isles, and 580 or so from England. Of these latter, about 116 are listed here as...secondary mineral at Gravel Hill mine, Perranzabuloe, Cornwall (C. Sparrow, pers. comm., 1991; XRD by Monica |  | | Journal (article/letter/editorial) | | not true granite, but only an altered sedimentary rock, we have, s o far as I know, no clue. The sedimentary...when the Coal-measures of Central and B~orthern England were being deposited and afterwards denuded before...possible that these veins, together with the phonolite of the Wolf Rock, are remains of a yet later period, the...had previously detected it in the serpentines of Cornwall, Banffshire, and the Vosges, but states that none... 2.561. Though so different in appearance, this rock is in compo6ition singularly like the preceding |  | | Journal (article/letter/editorial) | | Africa N.M.S. Rock Department of Mineralogy and Petrology, University of Cambridge, England Abstract. Rb-Sr...Rb-Sr whole rock isochrons for the Monchique and Mt. Kenya complexes, together with a series of 87Sr/86Sr...between previous studies. A consideration of wall-rock reaction, responsible for a few anomalous ratios...antipathy between alkaline rock complexes of "gabbroic" and "carbonatitic" type (Rock, 1976). "Gabbroic" complexes...crystallisation. Fractionation and re- 206 N.M.S. Rock sorption of these minerals leads via the formation |  | | Journal (article/letter/editorial) | | the Age of the Main Orogenic Phase in Devon and Cornwall . . . . . . . 201 CRAIG, G. Y., and E. K. WALTON...A Summary of Present Views on the Structure of Cornwall and Devon . . . . . . . . . CORRESPONDENCE pp...A Summary of Present Views on the Structure of Cornwall and Devon, 3, 253-257. HEY, R. W. Pleistocene...Cross-Folding in the Gramscatho Beds at Helford River, Cornwall, 6, 489-496. BAS, M. J. The Term Eucrite, 6, 497-502...the Age of the Main Orogenic Phase in Devon and Cornwall, 3, 201-208. STARKEY, JOHN. Chess-board Albite |  | | Journal (article/letter/editorial) | | A Summary of Present Views on the Structure of Cornwall and Devon, 3, 253-257. HEY, R. W. Pleistocene...Cross-Folding in the Gramscatho Beds at Helford River, Cornwall, 6, 489-496. BAS, M. J. The Term Eucrite, 6, 497-502...the Age of the Main Orogenic Phase in Devon and Cornwall, 3, 201-208. STARKEY, JOHN. Chess-board Albite...TILLEY, C. E. A note on the Nosean Phonolite of the Wolf Rock, Cornwall, 6, 503-504. TREMLETT, W. E. The...Pillow Lavas from Cyprus, 2, 169. The Viscosity of Rock-Glass of Granitic Composition under Various Physical |  | | Journal (article/letter/editorial) | | A Summary of Present Views on the Structure of Cornwall and Devon, 3, 253-257. HEY, R. W. Pleistocene...Cross-Folding in the Gramscatho Beds at Helford River, Cornwall, 6, 489-496. BAS, M. J. The Term Eucrite, 6, 497-502...the Age of the Main Orogenic Phase in Devon and Cornwall, 3, 201-208. STARKEY, JOHN. Chess-board Albite...TILLEY, C. E. A note on the Nosean Phonolite of the Wolf Rock, Cornwall, 6, 503-504. TREMLETT, W. E. The...Pillow Lavas from Cyprus, 2, 169. The Viscosity of Rock-Glass of Granitic Composition under Various Physical |  | | Journal (article/letter/editorial) | | Manchester MI3 9PL, UK 2 Department of Geology, The University, Sheffield $1 3JD, UK Abstract. Mineral...(Ne60Kseo)-An-Qz; and An-Ab-Or. Mineral and bulk rock compositional data together with textural criteria...69.3 (0.7) Ks 16.3 (0.4) Qz 14.4 (1.0) (mol %). Rock analyses were obtained by XRF techniques using fused...Olivine theralite, Otago, New Zealand (R 377). This rock is coarse grained with abundant, euhedral (possibly...Howford Bridge sill, Ayrshire, Scotland (12117). This rock is medium-grained with olivine (l ram, 4 vol. % |  | | Journal (article/letter/editorial) | | A Summary of Present Views on the Structure of Cornwall and Devon, 3, 253-257. HEY, R. W. Pleistocene...Cross-Folding in the Gramscatho Beds at Helford River, Cornwall, 6, 489-496. BAS, M. J. The Term Eucrite, 6, 497-502...the Age of the Main Orogenic Phase in Devon and Cornwall, 3, 201-208. STARKEY, JOHN. Chess-board Albite...TILLEY, C. E. A note on the Nosean Phonolite of the Wolf Rock, Cornwall, 6, 503-504. TREMLETT, W. E. The...Pillow Lavas from Cyprus, 2, 169. The Viscosity of Rock-Glass of Granitic Composition under Various Physical |  | | Journal (article/letter/editorial) | | 1017/S0016756800139536 Dr, F. H. Batch—A New British Phonolite. 149 species, firstly, by its circular outline...the "Colonie Haidinger." III.—A NEW BRITISH PHONOLITE. By FREDERICK H. HATCH, P H . D . , F.G.S. ...volcanic area of the Garlton Hills. Among these, the rock of Traprain Law especially attracted my attention...attention. It is a close-grained, dark brown to grey rock. Some varieties have a glistening or greasy surface...of the rock became apparent, Microscopic examination shows that the rock is a trachytic phonolite, and |
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