 | | | | MEMOIRS OF THE GEOLOGICAL SURVEY OF GREAT BRITAIN ENGLAND AND WALES Geology of the Lizard and Meneage (Explanation...32, and 1n his classic Report on the Geology of Cornwall, Devon and West Somerset. The ?istrict has now...further revisions have been made, n1ainly of a minor character. In the second edition advantage has been...Hornblende-schists . .. Distribution, 45 ; Landewednack, 45 ; Cadgwith, 46 ; inland districts, 47 ; Mullion, 49 : Predannack...XVIII. Pliocene Deposits ... Pliocene deposits of Cornwall, St. Erth, St. Agnes, 165 ; Crousa Down gravels |  | | Report (edition) | | MEMOIRS OF THE GEOLOGICAL SURVEY OF GREAT BRITAIN ENGLAND AND WALES Geology of the Lizard and Meneage (Explanation...32, and 1n his classic Report on the Geology of Cornwall, Devon and West Somerset. The ?istrict has now...further revisions have been made, n1ainly of a minor character. In the second edition advantage has been...Hornblende-schists . .. Distribution, 45 ; Landewednack, 45 ; Cadgwith, 46 ; inland districts, 47 ; Mullion, 49 : Predannack...XVIII. Pliocene Deposits ... Pliocene deposits of Cornwall, St. Erth, St. Agnes, 165 ; Crousa Down gravels | | | Report (edition) | | MEMOIRS OF THE GEOLOGICAL SURVEY OF GREAT BRITAIN ENGLAND AND WALES Geology of the Lizard and Meneage (Explanation...32, and 1n his cl�ss1c Report on the Geology of Cornwall, Devon and West So-merset. The district has now...some further revisions have been made, mainly of a minor character. In th.e second edition advantage has... .. . .. Distribution, 45; Landewednack, 45 ; Cadgwith, 46 ; inland districts ,. 47 ; Mullion, 49; Predannack...Hornblende pyroxene-epidote-schist, north side of Cadgwith Cove (E.5025). 5 . Homblendic quartzite , 100 |  | | Journal (article/letter/editorial) | | from that of the rest of Lizard district is very Cornwall. The great plutonic masses of the Lizard are mainly...ultra-basic composition, while those of other parts of Cornwall and Devon are highly acid granites. The country...not unlike those of the Palseozoic sequence in Cornwall in composition but distinguished by their intensely...promontories that form the extreme southern portions of Cornwall and Devon does this group emerge to form dry land...Archsean. The older Palseozoic rocks of South-west Cornwall have in general a north-east to east-north-east |  | | Journal (article/letter/editorial) | | Hornblende schists and gneisses (of Landewednack and Cadgwith). Man of War gneisses (of the Lizard skerries)...dissected in the east by valleys at Pen Voose, Cadgwith, Poltesco, and Kennack. At the shoulders of the...mica-schists exhibit a distinctive crinkled foliation ; minor folding, puckering, and shearing affects the entire...Series these hornblende schists sometimes show minor folds, but often their division planes are flat...Epidote often forms conspicuous bands at Bass Point, Cadgwith, and elsewhere. (iii) Kennack gneiss.—A group |  | | Journal (article/letter/editorial) | | Gardens. REPORT OF AN EXCURSION TO THE LIZARD, CORNWALL. MARCH 20TH TO 2~TH, EASTER, 1913. Bv ]. S. ...often exceedingly coarsegrained, with crystals of diallage and felspar three or four inches in length; and...to be obtained on the mainland in this part of Cornwall, though the pillow-structure in the lavas is by...convincing one. At the" Flagstaff Quarry" above Cadgwith for the first time we made acquaintance with the...hornblende-schists now make their appearance, In Cadgwith Cove these hornblende-schists are beautifully |  | | Report (edition) | | clistauce. MEMOIRS OF THE GEOLOGICAL SURVEY. ENGLAND AND WALES. EXPLANATION OF SHEET 359. THE GEOLOGY...32, and in his classic Report on the Geology of Cornwall ., Devon and West Somerset. The district has now...supplied at the cost of drawing and colouring. CORNWALL. 75 NE., SE., by J. B. HILL; lodes by D. A. Mac...which the principal are Porthleven, Gun1\1alloe, Cadgwith, Coveraclr and Porthallow, but the sca1·city of...0�1 the sky-line are Lizard 'l'o,vn Grade Church, Ruan Minor and Ruan Major. Tl1ey sta11d respectively 2�8 |  | | Journal (article/letter/editorial) | | walk inland was to convince me that here, as in Cornwall, the relations of the rocks would be most clearly...distinguished from the black serpentine north of Cadgwith, Cornwall% I t has exactly the same sharply defined...of glittering bronzite % just like those in the Cadgwith rock. A detailed description of the microscopic...this rock is a little more altered than it is at Cadgwith; some grains contain numerous ferQuart. J o u...attention to the fact ~hat the Cornish mineral was not diallage. Downloaded from http://jgslegacy.lyellcollection |  | | Journal (article/letter/editorial) | | Transactions of the Royal Geolo~cal Society of Cornwall : ' ~ "Sketch of the Geology of the Lizard District...the Geology of Cornwall," by Sir H. Davy, i. p. 3S. "On the Serpentine District of Cornwall," by the Rev..."Contributions towards a Knowledge of the Geology of Cornwall," by H. S. Boase, iv. p. 160. The subject is also...Soc. i. p. 291). " R e p o ~ on the Geology of Cornwall and Devon," by H. T. De la Beehe (published 1839)...term as generic, to include either metalloidal diallage or enstatite. 3~ 2 Downloaded from http://jgslegacy |  | | Journal (article/letter/editorial) | | cavern and open cavity named the FryingPan, near Cadgwith."' At Kynance some of the laminse of serpentine...certain that serpentinous change in the West of England is not confined to the Lizard District. Serpentinous...Serpentinous rocks exist in many other parts of Cornwall and Devon; and probably the total area of what may...various writers, and in considerable 1 Eeport on Cornwall, etc. See also Memoirs of the Geological Survey...original rock. Certainly there is neither olivine nor diallage present now, and it is by no means certain that |  | | Journal (article/letter/editorial) | | saussuritic mineral and a dark green or almost black diallage or augite. The latter rock much resembles some...ilmenite, some grains resembling a decomposed diallage, and a considerable quantity of a hornblendic...minerals, ferrite, etc. A grain of decomposed diallage (?), associated with glaucophane, is present....of bronzite, very like the black serpentine of Cadgwith; the other rather harder and almost free from...decomposed and consists of " saussurite " and diallage—the former decidedly predominating, and the crystals |  | | Journal (article/letter/editorial) | | when the Coal-measures of Central and B~orthern England were being deposited and afterwards denuded before...careful analysis. .Black Serpentinefrom " n e a r Cadgwith."--Black to greenish black, opaque; fracture splintery;...is so small, the quantity of unaltered augite, diallage or enstatite, must be very trifling. Any olivine...had previously detected it in the serpentines of Cornwall, Banffshire, and the Vosges, but states that none...Cave w This gabbro is remarkable for crystals of diallage of great size, associated with an opaque white |  | | Report (edition) | | Scotland: by G. V. "\lfilson with contributions III. England arid \'vales: by J. Phemister IV. References Figures...Fig. 1). The English and Welsh examples are from Cornwall or Anglesey as the case may be. In the following...Creagan (37) and also on Bolfracks Hill (55). In England at the Lizard; (see Section III) and in 11ifales...see Portsoy in Scotland (96) and the Lizard in England. Bastite is a name given to large shimrne1·y crystals...Shetland generally (126~131); and in England: the Lizard, Cornwall. Melting Sp.G. point 1 ,413-1 ,428°c |  | | Journal (article/letter/editorial) | | in Serpentine,' H. Fox, Trans. Royal Geol. Soe. Cornwall, vol. xi. pt. 5 (1891) p. 336. :~ Quoted by Mr...greenish serpentine containing small grains of diallage" [bastite], said to be from the Lizard Point....black serpentine from near [i. e. to the north of] Cadgwith. Contains porphyritic crystals of bastite. The...Remarks. Balk Quarry ........................ Cadgwith (above Frying Pan)... do. , Quarry N. of .......think, clear in the crags on the south side of Cadgwith Cove, where the latter rocks may be seen gradually |  | | Journal (article/letter/editorial) | | Clay, North-east Bald, F. A., elected... ..• 304 England, 101; NouingBallyshannon, Excursion to... 70, 84...to Farnham Z07 Butt, A. N. , Exhibit .. . 30/ Cadgwith, II9, 121,320; Excursion to .•• ... 325, 327 Cad...Implements, Farnham, t li9. Swanscombe 3°5 Chert bands, Cornwall I4 lS Chertsey, Excursion to 331 Chromite Serpentine..., elected 302 Concretionary limestone. N .E . England, Fulwell, Reker, etc. ... .. .96,98, IIO, lI3 Cook...Exhibit 301 Corals in British Museum I6!} 3I 3 Cornwall, II8, Excursion to Coste, E., On orig in of petroleum |  | | Journal (article/letter/editorial) | | following extract from his' Report on the Geology of Cornwall an4 Devon' * : - " I f it were not for the occurrence...grauwacke of Devon and Cornwall, upon which the mass of serpentine and diallage rock, now nearly covering......... H F Ditto ........................ H F Cadgwith ........................ IH F ,,o , o,~ 4....HORNBLENDE-SCHISTS of:hornblende-schists from Polurrian, Cadgwith, and Hot Point, situated on the east and west...so abundantly amid the grauwacke of Devon and Cornwall;" and I think it highly probable that not only |  | | Journal (article/letter/editorial) | | garnet; so the boulders were brought back by him to England. On careful examination a small diamond was detected...cleavage, not however nearly so close as in ordinary diallage, and a second weaker, sometimes approximately...brown negative crystals, common in hypersthene and diallage. The dominant cleavage, as before, is along the...cleavage replaces the orthopinaco'idal usual in diallage. 2 The others come from another mine (No 1). ...determined by the fracture of the predominant diallage-like mineral. The crystals of this run large, |  | | Book | | Transactions of the Royal Geological Society of Cornwall, for 1848 ; and a table of some of the principal...Transactions of the Royal Geological Society of Cornwall. Reports of the Devonshire Association for the...LOCALITIES IN ENGLAND BEDFORDSHIRE BERKSHIRE BUCKINGHAMSHIRE . CAMBRIDGESHIRE CHESHIRE 31 CORNWALL . 32... 64 65 CONTENTS. X MINERAL LOCALITIES IN ENGLAND— (continued ). OXFORDSHIRE PAGB 65 . RUTLANDSHIRE...124 130 APPENDIX 137 INDEX TO LOCALITIES IN CORNWALL 149 INDEX TO MINERAL SYNONYMS 153 1 THE |  | | Book (edition) | | Xl CONTENTS. Wall-case 5. PAGE Serpentine, Diallage, Steatitc, &c., described by H. W. Bristow - ...their order of succession. He will find that in England and Wales the Tertiary rocks are mostly formed...grit. Such is the general natu1~e of the rocks in England ancl Wales ; but in other parts of the wo1·ld there...and the other weste1'n and central counties of England as far north as De1'byshi1..e and the bo1'ders...depressed beneath the sea; and as it sank, its minor features were somew l1at modified, for te1'races |  | | Journal (article/letter/editorial) | | we were of opinion, at the time of our visit to Cornwall (August, 1890), that to regard the banded members...Keverne, we succeeded, as we hope, in clearing up a minor difficulty, which our former visit had failed to...place, however, in the crags on the south side of Cadgwith Cove, as mentioned in our former paper, 5 the...In these descriptions and throughout the paper, minor details of composition and structure are suppressed... the whole line of cliffs from Church Cove to Cadgwith. We found that, after passing the huge mass of |  | | Book | | A HANDBOOK TO THE MINERALOGY CORNWALL AND DEVON TRUR : PRINTED BY HEARD AND SONS, BOSCAWEN...BOSCAWEN STREET. HANDBOOK MINERALOGY OF CORNWALL AND DEVON, WITH INSTRUCTIONS FOE THEIR DISCRIMINATION...THE MINERS' ASSOCIATION OF CORNWALL AND DEVON; SECRETARY TO THE KOYAL CORNWALL POLYTECHNIC SOCIETY; OF THE...KOYAL GEOLOGICAL SOCIETY OF CORNWALL, AND OF THE ROYAL INSTITUTION OF CORNWALL, &C., &C. ASSOCIATE TRURO:...F.R.S., THB ELECTRICITY OF MINERAL LODES IN CORNWALL, AND OF MANY CORNISH MINERALS, (WHOSE OBSERVATIONS |  | | Journal (volume) | | TRANSACTIONS OF THE Royal Geological Society OF CORNWALL . INSTITUTED FEBRUARY 11th , 1814 . VOLUME THE...ROYAL HIGHNESS The Prince Regent , DUKE OF CORNWALL, PATRON OF THE SOCIETY, THIS FIRST VOLUME...advancement of the mining resources of the County Cornwall ; for the benefits which such an of In stitution...Cabinet. In the construction of a geological map of Cornwall , the Society has made considerable progress,...Society of Cornwall, 1818.. PATRON . His Royal Highness the Prince Regent, Duke of Cornwall. VICE - PATRONS |  | | Book (edition) | | ANTIQUITIES, MINING, MINERALOGY AND GEOLOGY OF UXzmm Cornwall SECOND EDITION. To which is added, for the...him from a resolution he had formed on quitting Cornwall, that of abandoning a science which can never...fertility ful, lands, 23. Dispensary, 25. Cornwall, 26. Royal Geological Society of Its Cabinet... 40. List of Indigeat nous Plants of Western Cornwall, EXCURSION 41, tyc. I. (Page 45) TO SAINT... Sennan Church-town The First and Last Inn in England, $5.— The Village of Mayon or Mean, Its origin |  | | Book | | inclusions in quartz of granite at St. Austel, Cornwall. Magnified 200 (6) Group diameters. Fluid inclusion...(c~) in quartz of granite from Ding Dong Mine, Cornwall. Magnified 2000 diameters. The number they are...Vol. (2) On the Rocks of the Mining Districts of Cornwall. See also ALLPORT. J. G. S., Vol. 413. , p. Brussels...characteristic (paulite). of diallage, pseudo-hypersthene, In diallage the inclusions are developed...correspond respectively to and of the monoclinic diallage pseudo-hypersthene group. The olivines which occur |  | | Book (edition) | | ANTIQUITIES, MINING, MINERALOGY, AND GEOLOGY OF WESTERN CORNWALL. A TO A WHICH IS NEW EDITION. ADDED, FOR...PRESIDENTS, AND MEMBERS OF d&oto&ical ^ocietr of Cornwall, THIS WORK IS INSCRIBED, AS A HUMBLE, YET...him from a resolution he had formed on quitting Cornwall, that of abandoning a science which can never...Penzance a Coinage Town, 25. Dispensary, 25. CORNWALL, 26. Meeting Public ROYAL GEOLOGICAL SOCIETY...Davy, 40. LIST OF INDIGENOUS PLANTS OF WESTERN CORNWALL, 41, $c. place of Sir EXCURSION I. (Page 45) |
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