 | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire W. J. PHILLIPS SUMMARY. Twelve stages in...biotite flakes, developed in liquid pockets after the sill had begun to consolidate, due to the coalescence...expansion and fracturing of the partially consolidated sill. It is argued that the separation of the gas phase...forms part of the composite sill in the coal measures at Lugar in Ayrshire has become well known as the...11 m (35 feet) and the lower 8 m (28 feet) of the sill. The petrography of the teschenite is described |  | | Journal (article/letter/editorial) | | Manchester MI3 9PL, UK 2 Department of Geology, The University, Sheffield $1 3JD, UK Abstract. Mineral...SiO2-rich nephelines plot in the nepheline plus feldspar stability field and must have crystallized metastably...rims of composition ~Orso and this is the only feldspar present in the rocks. In other rocks the "plagioclase"...the coexisting "plagioclase" and alkali feldspar allow the feldspar critical end point compositions to...containing strongly zoned plagioclase as the only feldspar species are believed to have evolved towards relatively |  | | Journal (article/letter/editorial) | | Himalaya, M. N. Saxena & S. K. Singh, 454. Alkali feldspar-plagioclase-quartz systems, initial melting...Central Newfoundland, M. Kay & N. hldredge, 372. of East-Central Alaska [ R ] , 406. Campbell, 1. H.. Origin...Crystallization of the teschenite from the Lugar Sill, Ayrshire, W. J. Phillips, 23. Cutbill. J. L., et...Kentucky and Ohio [ R ] , 306. Cambrian Trilobites of East-Central Alaska [ R ] , 4 0 6 . Geology of epigenetic... A. H., & D. F. Weil], Initial melting in alkali feldspar-plagioclase-quartz systems, 325. Langholm |  | | Journal (article/letter/editorial) | | n Volcanieity in Scotland Review of Carboniferous-Permian Volcanicity in Scotland 1) By E. H. FRANCIS...Midland Valley (Schottland) war der permokarbonische Alkali-(Na)-Vulkanismus besonders im Dinantium aktiv,...eingedrungen. Die gr6Bere der beiden wird durch Alkali-Dolerite (Sills) gebildet, die co-magmatisch zu...Bedeutung. Abstract The main Carboniferous outcrop in Scotland is in the Midland Valley rift, though ro&s of...m.) and Burntisland Anticline (e. 400 m.) in the east, and the Kelso Traps of the Tweed Basin (e, 120 |  | | Journal (article/letter/editorial) | | the investigation of a differentiated teschenite sill near Gunnedah, New South Wales, a study of the literature...crystalline granular rock composed essentially of feldspar, hornblende, augite, and analcite. Both Teall...recognition of teschenites in the Midland Valley of Scotland is due to Teall (1888, p. 191) in his description...consisting mainly of olivine, augite and plagioclase feldspar, with a considerable amount of analcite and zeolites...mineral constituents include basic plagioclase feldspar, titaniferous clinopyroxene, and analcite. However |  | | Journal (article/letter/editorial) | | CLINOPYROXENES OF ALKALI OLIVINE-BASALT N,IAGI,IA J. F. G. WrrrrNSoN, The Uniaersity of New England...W ., Australia. ABsrRAcr In representatives of alkali olivine-basalt magma, as contrasted to tholeiitic...diopside or salite. Analytical data indicates that alkali olivine-basalt clinopyroxenes having compositions...contrasting behavior of the pyroxene assemblage of alkali olivine-basalt and tholeiitic magma depends principally...composition with differentiation compared with alkali oliyinebasalt clinopl'roxenes, are important consequences |  | | Report (edition) | | BRITISH REGIONAL GEOLOGY THE MIDLAND VALLEY OF SCOTLAND EDINBURGH HER MAJESTY’S STATIONERY OFFICE price...BRITISH REGIONAL GEOLOGY The Midland Valley of Scotland SECOND EDITION, REVISED By M. MACGREGOR, M.A...Fig. 6. Map of Darvel-Galston-Sorn district, Ayrshire and Lanarkshire .. 27 Fig. 7. Section across...Knockgardner and Linfern Loch, near Straiton, Ayrshire . 32 Fig. 8. Diagram showing general succession...of Scotland 35 Sections across the Midlothian and Dalmellington Coalfields shire and Ayrshire. Fig |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | crystallization of the teschenite from the Lugar Sill, Ayrshire, 1, 23. REID, R. E. H. Hexactinellid faunas... D. F., & A. H. Kupo. Initial melting in alkali feldspar-plagioclase-quartz systems, 4, 325. WEST, R...CRIMES, T. P., & N. B. DHONAU. Pre-Cambrian of South-East Eire, 1, 77. DOWNIE, C , & W. E. TREMLETT. Micropalaeontological... evidence on the age of the Clara Group (South-East Ireland), 4, 401. FENNING, P. J., & E. C. FRESHNEY... MARSHALL, B. Joint and fault patterns in North-East Tasmania, 2, 186. MILLER, J. A., & P. E. BROWN. |  | | Journal (article/letter/editorial) | | Trends in Undersaturated Volcanic Rocks from the East Otago Volcanic Province (New Zealand) and Related...F. G. WILKINSON ABSTRACT The petrology of the East Otago Volcanic Province (late Miocene), including...shallow intrusives whose compositions range from alkali basalt, basanite, and nephelinite to trachyte and...demonstrate the production of trachytic liquids from alkali basaltic parents and of phonolitic liquids from...unequivocal production of phonolite from trachyte in the East Otago Province has not been demonstrated. The mafic |  | | Book (edition) | | Granites and Granitization IV SYENITES AND RELATED ALKALI-RICH ROCKS 246 Classification; Over-saturated...CARBONATITES 369 The Nepheline-Syenites and Related Feldspar-Free Types; Carbonatites, Their Petrography and...one link in the feldspar "chain" 27. A formal diagram of the "chain" structure in feldspar 28. Diagram illustrating...vein- to film-perthite in cleavage 1nass of K,Na feldspar 36. Block-diagram showing relation between a/bite...thin section, from contaminated 110rite, Arnage, Scotland 54. Simplified ,nap of the Carboniferous lava |  | | Book (edition) | | THE GRANITIC ROCKS 257 IV SYENITES AND RELATED ALKALI-RICH ROCKS 270 DIORITES, MICRODIORITES AND ANDESITES...affect the character of the rock. Thus, quartz, feldspar and mica are essential constituents of most granites...quartz-bearing rocktypes including pitchstones from Arran, Scotland, obsidian from the Yellowstone Park, quartz-porphyries...those occurring in the Markle-type basalts in Scotland. They consist of penninitic chlorite, about 66...quartz-dolerites, including the well-known British Whin Sill, contain hypersthene associated with other pyroxenes | | | Book (edition) | | GRAN ITIC ROCKS 257 IV SYENITES AND RELA T ED ALKALI-RI C H ROCKS 270 D I ORITES, M I CROD I OR I...affect the character of the rock. Thus, quartz, feldspar and mica are essential constituents of most granites...quartz-bearing rocktypes including pitchstones from Arran, Scotland, obsidian from the Yellowstone Park, quartz-porphyries...those occurring in the Markle-type basalts in Scotland. They consist of penninitic chlorite, about 66...quartz-dolerites, including the well-known British Whin Sill, contain hypersthene associated with other pyroxenes |  | | Book | | Bentley House, 200 Euston Road, London nwi 2DB 32 East 57th Street, New York, NY 10022, USA 296 Beaconsfield...of the mineral concerned (commonly plagioclase feldspar) have a crudely spherical disposition. In ultramafic...main minerals to crystallise out, plagioclase feldspar, has a very strong tendency to develop a lath-like...1B). Again, certain lavas are composed of little feldspar laths aligned parallel to the direc¬ tion of flow...In some basic igneous rocks whose plagioclase feldspar has started to crystallise out early and then |  | | Report (edition) | | British Regional Geology The Midland Valley of Scotland THIRD EDITION BRITISH GEOLOGICAL SURVEY Natural...British Regional Geology The Midland Valley of Scotland THIRD EDITION By I. B Cameron, BSc, and D. Stephenson...the area around Distinkhorn and Tincorn Hill, Ayrshire 45 16 Palaeolatitudes for the British Isles during...Perrnian igneous rocks of the 107 Midland Valley 34 Alkali dolerite sills and associated intrusions of Carboniferous...and ice limits 40 Sequence of shorelines in SE Scotland 41 Isobases of the 11ain Late Glacial shoreline |  | | Book | | Limited Longman House Burnt Mill, Harlow, Essex, UK Associated companies, branches and representatives...phenocrysts in a fine-grained groundmass of plagioclase feldspar, pyroxene and iron ore. The upper photograph,...light is relief of the olivine against the feldspar common is does not show pleochroism - the more...gabbro picrite, Border Croup. Skaergaard intrusion. East Greenland; magnification x 23. Monticellite Monticellite...colour seen here is should be remembered that feldspar present it is low first order; the the orange-yellow |  | | Journal (article/letter/editorial) | | alkaline magma. Lithos 5, 1-18. A 5.5 meter thick sill of fourchite near Montreal, Quebec, has several...sharp boundaries and are composed largely of alkali feldspar, nepheline, analcite or quartz, with very minor...) Ocelli are found in many of the basic dyke and sill rocks of the Monteregian petrographic province of...Hodgson 1968) and are nowhere better exposed than in a sill near the village of Ste. Dorothde, located 20 km...ocelli in 1 -- Lithos 5:1 2 A.R. Philpotts this sill, various physical properties of the initial oceUar |  | | Journal (article/letter/editorial) | | necessarily with olivine, possessing a near-isotropic feldspar-free base of glass {hyalomonchiquites), analcime...sannaites it is alkali feldspar (both may carry feldspathoids); in monchiquites the base is feldspar-free, near-isotropic...feldspathoids. (b) Camptonites represent volatile-enriched alkali basalt or basanite magmas; nepheline syenite magmas...in the 'monchiquites' of the Midland Valley of Scotland (Tyrrell 1912, 1928, Macgregor and Macgregor 1948)...contains analcime ocelli in such abundance that its alkali content is 9 per cent—far higher than most monchiquites |  | | Journal (article/letter/editorial) | | Williamson Building, University of Manchester M13 9PL, UK Accelerator Science and Technology Centre (ASTeC)...Technology Facilities Council, Warrington WA4 4AD, UK [Received 14 December 2011; Accepted 23 March 2012;...augite phenocrysts and groundmass biotite, alkali feldspar and titanomagnetites are presented and substitution... together with groundmass alkali feldspar and titanomagnetite. The alkali feldspars and biotites are...leucite (altered to pseudoleucite) and biotite. Sill- or stock-like bodies in which the undersaturated |  | | Journal (article/letter/editorial) | | disposed core of analcime—carbonate and an alkali feldspar-kaersutite-rich lining. Virtually identical...phase (fluid immiscibility) which is carbonate and alkali-rich, the source of both carbonatites and the agent...groundmass containing analcime (An) and altered feldspar (F). Scale bar 0-30 mm. 'The OU prefix refers...northeast-striking schistosity while dykes are intruded along an east-striking ac joint system developed during the preceding...from 2-3 cm dykelets to a 60 m thick lamprophyre sill. 142 A. F. COOPER FIG. 3. OU 42046. Zoned ocellus |  | | Journal (article/letter/editorial) | | differentiation relationship, or otherwise, of alkali basalt to tholeiitic basalt. Chapter 17, 'An Unsurpassed...and other great sheet intrusions: Palisades Sill, Lugar Sill, The Great Dyke, Duluth, Bushveld and Stillwater...that the albite A-component in the Quartz(Q)-Alkali feldspar (A)-Plagioclase (P) triangle should be considered...Students. Cambridge University Press, Cambridge. UK . Hark er, A. 1909. The Natural H istory of Igneous..., dolerites, and basalts, of Tertiary age, in Scotland and Ireland . Quart erly Journ al of the Geological |
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