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| conditions and in the ancient physical geography of the district, from the older Eocene deposits which intervene...or of any other region in which atmo.spheric or suba~rial volcanos have operated. In the Campagna there...side of a crater, and still less of any currents of suba~rial lava which flowed from such depressions, like...tephrine lava of Brongniart, which occupies the rugged hill of Radicofani, about 2470 French feet above the...arrangement and the highly inclined dejections of a suba~rial volcano. Pareto's words are only to this effect |
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| INTRUSIVETUFF-LIKe.~OCKSI~ IRELAND. 479 29. 0n INTRUSlV]~, TUFF-ZIKE, IGNEOUS ROCKS and BR~CCIAS in IReLanD. By...granitic mass. Rocks similar to these occur in the district of Forkhill, in Armagh, and are described as '...of Exeter on June 1, 2016 Vol. 57.] I~RUSlVF~ TUFF-L/Kr ROCKSIN IREL~'D. 481 a case ofpetitioprincipii...reality hypogenie, occur at Balbriggan and Bellewstown Hill, north of Dublin, intrusive into Upper as well as...some of the supposed 'ashes' of the Lough Guitane district, near Killarney, and some of those occurring in |
 | | Book |
| András Nagymarosy • Tibor Szederkényi Geology of Hungary Editor János Haas E€ otv€os Loránd University...Geophysical and Space Science Research Group Budapest Hungary ISBN 978-3-642-21909-2 ISBN 978-3-642-21910-8.... . . . 3.2.2.1 Continental Formations, North Hungary . . . 149 . 151 . 155 . 156 . 156 . 159 . 159... 3.4 4 Brackish to Marine Formations, North Hungary . . . . . . . . . . . . . . . . . . . . . . . ...2.3.1 Northwest Hungary . . . . . . . . . . . . . . . . . 3.2.3.2 Northeast Hungary . . . . . . . . |
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| succession of undulating ridges of tawny~eoloured tuff begins, first at the Island of Ischia, and then...represented by the well-known characteristic yellow tuff of Posillipo, which forms the main framework of...the various materials which underlie the yellow tuff, and are visible only to a very small extent. Lastly...the deposits of later formation than the yellow tuff. This threefold distinction, of petrographical and...the First eruptive Period, anterior to the yellow tuff. This last, included Downloaded from http://jgslegacy |
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| alluded to in some of Macculloch's remarks on this district, I think it probable that he had at least coasted...so in company with James Smith, Esq., of Jordan Hill, I shall proceed to describe the order and nature...and stems of plants. 3. A bed of volcanic ashes or tuff; being an ashy paste full of white angular fragments...further, it was recognised by Mr. Smith, of Jordan Hill, as very similar to some of the volcanic products...portions of the superincumbent tuff. 5. The fifth bed is a second band of tuff, similar in composition to |
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| occurred, the result appeared to them to be a conical hill composed of scoriae, lapilli, or other loose ejeeta...summit or flank, or perhaps from the base of the hill, spread over the adjoining surfaces in a sheet or...especially upon a question relating to a volcanic district which he had, as it were, discovered, and which...himself grounded on the perfect similarity of the tuff-beds of which it is composed to those which are...advanced by all of them, that Monte Nuovo was not a new hill in 1538 that it was not formed at that time, nor |
 | | Journal (article/letter/editorial) |
| Old igneous basement = South-~Vestern Region. (2) Tuff series, with layers of marine cherty limestones...that I believe the ejectamenta to have been mostly suba~rial and to have been thrown out of the volcanic...characteristic fossils of that formation. R. T. Hill~ discusses the question of the occurrence in the...Purves, who represents them as a series of beds of tuff among which are intercalated deposits of chert and...large excavations, quite different in shape from suba~/rial valleys. There is absolutely no room in Antigua |
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| chipped implements. In some partl of the Madras district the laterite loses its clayey character to a great...northward through the whole length of the Nellore district ; and I collected implements at several places...systematic survey of the southern half of the Nellore district was all Downloaded from http://jgslegacy.lyellcollection...the Nemilly hill, which has an elevation of 367 feet above sea-level. This Nemilly hill is perfectly...of the laterite ; for on ascending further up the hill all lateritic dgbris is soon lost sight of, and |
 | | Journal (article/letter/editorial) |
| between Matapu Point and Autea Point, while the little hill in Atanui Valley probably represents the plug of...rises to about 1300 feet above sea-level. Naruii Hill is about 800 feet high, but elsewhere the general...considerable thickness of calcareous palagonite-tuff [783] containing many lapilli of basalt as well...found by J. J. Lister (17, p. 597) in a calcareous tuff at Tonumeia in the Tonga Group. From the presence...corals and other organisms he concluded that the tuff was formed in shallow water. (d) Geological History |
 | | Journal (article/letter/editorial) |
| diatrmm~s ~%rs subaerial lava flows suba~eous lava flows VOLCANIC I suba~eous ex~losive vole. subglacial...Lindsay, 1982; Rytuba and McKee, 1984); (c) ash-flow tuff (incl. ignimbrite) sequences (Smith, 1960; Ross...breccia family. Fragmental lithic tuffs are termed tuff breccia only when the size of the angular fragments...use either the term "breccia" (if sedimentary) or tuff (if pyroclastic). A name once commited is difficult...(consolidated rudaggregates, e.g., clastic breccia, tuff and tuff breccia, vein breccia, conglomerate, pillow |
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| concepts, and blocky-vesicular clast palagonite tuff must be labelled a Review of: McPhie J, Doyle M...pyroseyan deposit. The problem carries over to other suba- clastic flows is only just emerging' (p. 100) give...pumiceous clasts which can be entrained called a tuff (if settling ash is entrained in marine cur- and |
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| single volcano, or at least in the same volcanic district. In the first place, evidence was sought with...signs of volcanic action have now been destroyed by suba~rlal erosion, and therefore the surface-features...beneath the traehyte.' Above the trachyte is a bed of tuff, varying from 10 to 60 feet in thickness. This is...Above this phonolite is a conspicuous bed of white tuff 8 feet thick, but thinning out northwards. Upon...dark red, thus indicating that the eruptions were suba~rial. Resting on the basalts is a flow of a peculiar |
 | | Journal (article/letter/editorial) |
| ]taverfordwest, about 10 miles away. I n t h a t district there is practically an u n b r o k e n succession...pre-Cambrian rocks of St. David's or of the Hayscastle~ district are there any rocks that have much in common with...description, and penetrated only by a few basic sills. The suba~rial character of the flows seems to be proved by...II=Soda-felsite, south-east of cairn on Castletimon Hill, Co. Wieklow (Ireland). Geol. Mag. 1889, p. 546...mainland at Crabhall, north of Dale, where a large quarry has been opened for road-metal. I n the hand-specimen |
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| Charles agrees with Mr. Smith, of Jordan-hill, in attributing a suba~rial origin to the great mass of the...hundred dikes are there seen, intersectlng scoriee, tuff, and lava. In another letter the volcanic cone of |
 | | Report (issue) |
| Saguache County. 2. Geology Colorado Gunnison County. 3. Uranium ores Colorado Saguache County. 4. Uranium...Uranium ores Colorado Gunnison County. I. Title, II. Series: Geological Survey professional paper ; 1457...Regional geology .................... Cochetopa district ................... Geologic setting ...........3 6 6 6 7 10 12 12 13 13 19 23 Marshall Pass district ........................... Geologic setting ........ 3. Generalized geology of the Cochetopa district, Saguache and Gunnison Counties, Colorado ... |
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| AND PETROLOGY OF THE MANGANESE ORE OF THE RHIW DISTRICT (CARNARVONSHIRE). By AI'ST]:" W!LLlA~I \YOODLA"D...Manganese-bearing Variety 2(1) Resorted Kera toph yric Tuff 2 I [ The Wea.thcr ing of the Red Ore Hocks 212...Hirundo beds. The ore is, in part. an altered volcanic tuff, and marks commencement of an episode of intermittent...The are rock is an altered clastic rock, largely a tuff or in part a pebbly rock in which oolites and pisoliths...microscopic examination shows that it was originally a tuff with layers of detrital quartz" (Matley, 1932, p |
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| the discovery of a third region, the Torfajokull district, whose geology is especially interesting, as it...SOCIETY OF GLASGOW. [Trans. of the Torfajokull district; basic intrusives are found as a few " greenstones...struck Mackenzie at once. He says—" The instance of tuff a excepted, I saw no trace of stratification in...vulcano-glaciai formations, coastal deposits, and suba-erial denudation products. All these materials have..., Deposits. Ophitic basalt (Doleritformation), Tuff and breccia (Palagonitformation). Conglomerate |
 | | Journal (article/letter/editorial) |
| the Thirsty Canyon Tuff (Noble et al. 1964). 3. Spearhead Member, Thirsty Canyon Tuff (Analysis #9, Table...a~sh-flow sheeL Kane Springs Wash Tuff (Noble 1968). 6. S o ~ e r Meadow Tuff (Analysis #15, Table 2, Noble...Parke~ 1.')75). 7. Gold Flat Member, Thirsty Canyon Tuff (Analysis #7, Table I, Noble & Parker 1975). LITHOS...7 as are given iw, Table: 1. Specimen Bt, BlOop Tuff, Hitdreth 1979; Specimen GG,. Gadar, Greenland,...rocks are 270 Drexler et al. LITHOS16 (1983) SUBA~.KALINE Z _o ,~ MELTS ~I¢// i g " ~ MELTS |
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| Colombian-Tertiary Deposits ? Magdalena lower Cartagena district Sind River region valley Galapa group (a La Popa...central valley. This area is represented by the district of Barrancabermeja, where the Tropical Oil Company...the coalbearing portions of the Guad uas in the district of San Jorge and Llanos de Ammos, near Zipaquira...total thickness of the Guaduas strata in this district is estimated by Scheibe as not less than 2,000...resemblance of these beds to those seen in the district of the Rio Colorado and at Las Doradas. The Guaduas |
 | | Journal (article/letter/editorial) |
| submarine features were modified, if not formed, by suba~rial denudation,when the land stood as high as the...the island. From the higher mountain-ridges heavy tuff-beds are seen sloping seaward at angles varying...breccia. In the higher valleys, an old volcanic tuff recurs, as seen to an altitude of 1300 feet on the...upper marls of Anguilla, the limestones of Brimstone Hill (St. Kitts), and similar beds in Barbados, and also...In M a r t i n i q u e there is a repetition of tuff-beds similar to those of Dominica, and in places |
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| H., and Hall, C. H., 1975, SPSS primer: McGraw-Hill Book Co., New York, 134 p. Mutschler, F. E., Rougon...-Statisticalpackage for the social sciences (2nd ed.):McGraw-Hill Book Co., New York, 657 p. tlStitttStttttttttt...SUBAQUAEOUS F~OW OR PALAGONITE ! IGNZHBRITE (WELDEO TUFF) L LAVA LAKE P LARGE PLUTON OR PLUTONIC ROCK R SAMPLE...P|RALKAL|N| OOZ ULTRAHAFZC (GOLOUR INDEX CREATER THAN TS) SUBA~KALZNE RDCKS=.|UBOZV|OEO INTO THOLEZZTZC SER|IS |
 | Titley, S., Aiken, D., Barter, C., Jansen, L., West, R. (1986, March) Frontiers in geology and ore deposits of Arizona and the southwest, Field Trip Guidebook 9 - Geology and ore deposits of the Pima Mining District. Guidebook. Arizona Geological Society | Report (issue) |
| d Geology and Ore Deposits of the Pima Mining District March 22, 1986 Leaders: S. Titley (U. of A.)...GEOLOGY OF ORE DEPOSITS OF THE PIMA MINING DISTRICT. PIMA COUNTY. March 22. General Leader: S. Associate...GEOLOGY OF ORE DEPOSITS OF THE PIMA MINING DISTRICT, PIMA COUNTY, General Leader: S. R. Co-leaders: D...University of Arizona, am Depart for Pima mining district. 5: 00 pm Drivers: front of Student Union Trip...accessible mines, including Sierrita and mines, district and a review of the geology. at Mission |
 | | Report (issue) |
| mcsoSCTuff types 4 Tl1ickness 4 Bases 5 Joints 5 Cleavage 5...Summary and conclusions 13 The Volcanic Province 13 Tuff features related to emplacement environ ment 13...5. 7 tuff 20 5.8 Recrystallised "velded tuff with turbid feld spa1· crystals 20 5.9 \Velded tuff \Vith...segregation 21 5.11 Clast of perlitic-fractured welded tuff with chlorite accentuating the f1·acture surfaces...lapillus 22 5.14 Recrystallisation overprint of welded tuff. Labate areas of feldspar and segregated sericite-chlorite |
 | | Journal (article/letter/editorial) |
| hypersthenes, serpentines, greenstones, greenstone ash and tuff, clay schists, crystalline slates, and coral built...travertine which have been precipitated from water in suba~,rial volcanic districts, must have been at the |
 | | Book (volume) |
| the Superga, for example ; to refer a portion hill of the to the older Pliocene belong the greater...marls as to show that the eruptions took where a hill place in the sea during the older Pliocene period...have been sub- member other At of the of the Suba- pennine group, the yellow sand and conglomerate... Tuscany, a great range of conglomerate of the Suba- pennine beds, which is seen for eleven miles...the turbid waters of the rivers Braganza, Parma, district Taro, and Enza. brown clay, apennine marl |
