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| Basalt Lavas in Antrim. 501 Differentiation in Basalt Lava, Island Magee, Co. Antrim. By S. I. TOMKEIEFF...TOMKEIEFF, F.G.S. INTRODUCTION. rPHE plateau-lavas of Antrim cover an area of approximately -L 1,550 square...analysed. Generally speaking the plateau-lavas of Antrim are divided into two setsāthe lower and the upperāseparated...subaerial weathering. The lower lavas all over Antrim belong to the same type, namely olivine-basalt...restricted to the northern part of Antrim, while the second type (b) is found in the south of Antrim, and it is |
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| 288 On the occurrence of Gyrolite in County Antrim. By F. N. A. FLEISCHMANN,M.A., F.C.S. [Read June...of its occurrence in the lavas of the north of Ireland has hitherto been recorded. The examination, however...Ballyhenry to the north-west of Carnmoney Hill; and two quarries on Carnmoney Hill, the one on the north-east...the other on the south-west slopes in that of Carnmoney. These quarries are worked on short contracts...which I noticed the mineral was the qusrry on the northern slopes of this hill. In it but one flow is exposed |
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| XIV.āThe Tertiary Dolerite Plugs of North-East IrelandāA Survey of their Geology and Geochemistry.* By...associated with the Tertiary lava plateau of north-east Ireland. All but two of the plugs are composed of olivinedolerite...INTRODUCTION igneous activity in the north-east of Ireland was both widespread and varied in nature. An extensive...in north Antrim these are of olivine-free or olivine-poor tholeiitic basalt, and in mid-Antrim of rhyolite...12 13 14 15 16 17 18 19 20 21 22 23 24 County Antrim Brockley, Rathlin Island Bendoo, S.E. of Ballintoy |
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| The amygdale minerals in the Tertiary lavas of Ireland. iII. Regional distribution. By G. P. L. WALKER...in the Antrim Basalts, and the ten most abundant species, in order of frequency, are chabazite, thomsonite...and mordenite are recorded for the first time. Chabazite and thomsonite characterize the upper parts of...age of zeolitization in the volcanic history of Antrim. In places the zeolite zones are missing, and in...tholeiite lavas that occupy a smal! area in north Antrim have an amygdale mineral assemblage different from |
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| andesine, 587 F a r o e s (F~eroerne) Erionite, chabazite, 343 N o r w a y (Norge) Gryting, Risor: fergusonite...wollastonite reaction-skarn, 26 Port Glasgow: chabazite ('glottalite'), 421 Sutherland Allt a Mhuilinn:...rare-earth mineral, 389 IRELAND Flush Hall, Newtownards, Co. Down: thaumasite, 416 Antrim Plinthite, red zeolites... 508 Black Cave, Islandmagee: mordenite, 5O9 Carnmoney Hill, Belfast: calcite, zeolites, 609 Giant's...Giant's Causeway: heulandite, 506 Glenarm: chabazite (var. herscheli~e), 513 Heddles Port, Islandmagee: calcite |
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| 187 Low-potash gismondine from Ireland and Iceland. By G. P. L. WALKER,Ph.D. With chemical analyses...Atlantic region, from a total of some 40 localities in Antrim and Iceland. It occupies a well-marked position...lavas, and the characteristic associates are chabazite, thomsonite, and phillipsite. Five new chemical...collected in Northern Ireland by the writer in 1947, from Bruslee Quarry in the Antrim Basalts, were...in the same general area in Antrim. Examination of the extensive Antrim zeolite collection of the late |
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| The amygdale minerals in the Tertiary lavas of Ireland. IV. The crystal habit of calcite. By G. P. L....ALCITE is widespread in amygdales and veins in the Antrim Basalts. Broadly, two types of occurrence may be...the local categories of occurrence. Of all the Antrim minerals, calcite shows the greatest diversity...te-quartz zone in the northwestern part of the Antrim Basalts (Walker, 1960) has e(01i2} as the predominant...with f{0221} predominant are equally abundant in Antrim, and even more characteristic of the Chalk immediately |
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| The Geology of North-East Ireland account of the geology of North-East Ireland, which lies within the region...quarter-inch Sheets 2 and 5 of the Geological Survey of Ireland, contributions have been made by C. H. Emeleus...Charlesworth has written the remaining sections and co-ordinated the whole. TO THIS COMPOSITE 1. INTRODUCTION...rocks of the Highland Border Ridge of north-east Antrim (and their western continuation in the Sperrin...and Castlereagh Hills. 2. DALRADIAN ROCKS OF CO. ANTRIM Schistose rocks underlie about seventy square |
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| Some Observations on the Antrim Basalts and Associated Dolerite Intrusions by G. P. L. WALKER Received...basalt lavas and minor intrusions of north-eastern Ireland. Individual lava flows are found to average twenty-two...mineral new to Ireland. Composite lava flows are recorded for the first time in Ireland. Several examples...some 1500square miles in Antrim and adjacent counties in the north-east of Ireland. Excellent accounts of...of the general characters of the Antrim Basalts are given by Geikie (1897)and Charlesworth (1935),and |
 | | Book (edition) |
| 1 GEOLOGICAL SURVEY OF NORTHERN IRELAND Geology of the country around Carrickfergus and Bangor Blacl<...the younger strata and volcanic rocks of County Antrim to the north. Although the area has been dealt...extension of the Southern Uplands Fault into Northern Ireland is discussed in the chapter dealing with geophysical...finding buried coal and hydrocarbons in south-east Antrim are also considered. In order to keep the price...[>JI 376] Frontispiece GEOLOGICAL SURVEY OF NORTHERN IRELAND Department of Economic Development A. E. |
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| LIBRARY j s i~sc_::. HISTORICAL GEOLOGY OF' IRELAND Digitized by the Internet Archive in 2023 with...org/details/historicalgeolog0000jkch HISTORICAL GEOLOGY OF IRELAND BY J. K. CHARLESWORTH C. B.E., D .Sc., PH.D....been attempted for Ireland since Cole and Hallissy's Handbook of the Geology of Ireland of 1924: the author's...author's Geology of Ireland: An Introduction ( r 953) had in mind the elementary student or the general...improve our knowledge of the various systems in Ireland. Many problems, however, await their final solution |
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| Juan Carlos Carracedo & Simon Day 5. The north of Ireland Paul Lyle 6. Leinster Chris Stillman & George SeYastopulo...Peter Rowe OTHER TITLES OF RELATED I"t\TEREST Co,zfiĀ·onting catastrophe: nell'perspecrhĀ·es on n:iwra...& Jean-Claude Tanguy Minerals of Britain and Ireland A. G. Tindle The Open University T: 'XI 'Jo ~6...stage of MB! that focusing only on Britain and Ireland might be too restrictive, and that what was really...personally discovered new species to Britain and Ireland, and colleagues permitted me to record their unpublished |
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| and, much more rarely, hornblende, calcite, chabazite, and thomsonite. Scolecite has usually been considered...occupied by calcite, which has since been removed. Chabazite and Thomsonite.āIn addition to scolecite these...aggregate of quartz, albite, and epidote, whilst chabazite has been noted in a vesicle filled with an TRANS... clear crystals of quartz and rhombohedra of chabazite. Veins filled with albite, solecite, and prehnite...Skye," 1904, p. 45. I) JAMES STRACHAN, " The Carnmoney Chalcedony, its Occurrence and Origin (with a |
