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| Altenhöferallee 1, D-60438 Frankfurt am Main, Germany. (E-mail: w.franke@em.uni-frankfurt.de). INTRODUCTION...Correlation of the Rheno-Hercynian Variscides between Germany and SW-England has a long-standing tradition (Franke...open questions. MAIN FEATURES COMMON ENGLAND AND GERMANY TO SOUTH-WEST It is largely agreed that the English...(6) Devonian through to Namurian synorogenic greywacke turbidites derived from the active, southern margin...3): Rheno-Hercynian Belt of Central Europe Dill-Lahn autochthon Early Devonian (up to Late Emsian) siliciclastic |
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| were to travel 2000 kilometres through Western Germany, set out on the journey which terminated at Cologne...(Massenkalk) of the Frasnian stage were seen in a quarry near Schmidthof. On one bedding plane occur numerous...especially P . pentagona Gold£. At the entrance of the quarry above the mas sive limestone, nodular limestone...reticularis L. and Orthis iwanowi Tschern . In a quarry south of Walheim Station a good secti on of the...shales Vicht conglomerate Red shales, green greywacke, sandstone bank with rich marine fauna. frequent |
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| A CROSS-SECTION THROUGH THE WESTERN PART OF THE LAHN SYNCLINE. VI. By Professor Franz Michels VII...(2). Westerwald between Sieg and Lahn. (3). Taunus between the Lahn and the plain of the upper Rhine...several thousand metres of shales, sandy shales and greywacke. The following sub-divisions are usually made...approach of the Coblenzian, and thick quartzites and greywacke sandstones (Throner Quartzite) occur. 3. THE COBLENZIAN...replacing the normal sedimentary facies. In th e Lahn va lley region porphyries occur in the lower par |
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| Geowissenschaften der Universitdt, D-35 390 Giessen, Germany (e-mail. wolfgang.franke@geolo.uni-giessen.de)...c Ist S-MARGIN of OLD RED CONTINENT Dill - & Lahn Syncline Taunus ~, ['~,~ .-.....-. iiiii!ili...mid-Devonian to Vis~an volcanism, which extends from the Lahn/Dill area of the Rhenish Massif into the northwestern...Closure of the Rheno-Hercynian Basin is recorded in greywacke turbidites derived from an active margin to the...Schieferserie' and on top of the parautochthon of the Lahn Syncline (Wierich & Vogt 1997). These relationships |
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| greywackes and sandstones (Givetian–Visean, Variscides, Germany) as indicators of ultramafic source rocks MARTIN...Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany (Received 11 November 1998; accepted 29 March...Harz Mountains (Famennian–Visean), the Werra greywacke (Frasnian–Famennian) and the Rhenish Slate Mountains...recorded in the Late Devonian South Harz–Selke greywacke (up to 4.1 % of the translucent heavy minerals)...minerals) and in the Early Carboniferous Tanne greywacke (up to 2.7 %). Also in the Rhenish Slate Mountains |
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| various Hercynian massifs (Brittany, Ardennes-Rhineland, the Massif Central of France) near or within...associated with greywacke hones (IIC (6-9) below), also probably from Brittany. The Rhineland-Ardennes area...honestones of other types for which an Ardennes-Rhineland source is probable; e.g. at Thetford, with the...cataclastic greywackes of sub-group II A and the silty greywacke of type " IIC(3) (below) and at Dorestad (Holland)...this is no evidence in favour of an Ardennes-Rhineland provenance for " schist hones "; rather the contrary |
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| part of your collection. Fire Opal MINERALS Greywacke, Leucitite, Phyllite, Quartzite GROUNDWORK______________...yellow J MINERALS p l u s GR co m o m GREYWACKE IS A SEDIMENTARY ROCK WITH ■2. MEDIUM-SIZED...SET IN A BASE OF F1NE- —1 GRAINED CLAY > ZD Greywacke - pronounced ‘graywacky’ - is usually dark grey... CHARACTERISTICS The essential components of greywacke are clay minerals, especially biotite and chlorite... Illite and muscovite may also be found, but greywacke contains no kaolinite. The most important accessory |
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| com/locate/jvolgeores Thermo-physical rock properties of greywacke basement rock and intrusive lavas from the Taupo...Technology, Schnittspahnstr 9, 61476 Darmstadt, Germany GNS Science, Wairakei Research Centre, 114 Karetoto...velocity Geothermal systems a b s t r a c t Greywacke of the Waipapa and Torlesse (Composite) Terrane...compressive strength were conducted for selected greywacke samples to quantify their mechanical rock strength...Torlesse-type greywacke exhibit minor rheological differences, with Waipapa-type greywacke having lowest |
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| other turbidite deposits, thirty-one samples of greywacke from the Normanskill formation near Normanskill...fresh material were collected. was recorded. Greywacke and shale samples were also taken from the Quebec...formation was sampled by collecting from one large quarry in New York state. Several miscellaneous greywackes...persons. Several thin-sections were cut from each greywacke sample and most of the remainder was crushed using...formations. Two formations consisting of shale and greywacke or shale and arkose sequences were selected to |
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| established a broken, block structure for the greywacke-limestone complex of the Ankara outcrop, and in...Devonian. It is probable that much of the Ankara greywacke is also Upper Devonian (Nowack, 1928), especially...mainly icith Greywacke, probably Carboniferous to Permian On leaving the overwhelmingly greywacke district...small, set in greywacke, or, in certain areas, as considerable spreads, free of greywacke. The assemblage...to the south-east, a narrower outcrop of mixed greywacke and limestone is exposed, wThich may still be |
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| was shown important exposures in ECC's Greystone Quarry south-east of Launceston, on Brent Tor and in the...taking his B.A. in 1937 he went to Frankfurt in Germany, there to study under Professor Rudolf Richter...training at Frankfurt and the field work in the Rhineland. There he became fluent in German and also devoted...visit to the Ardennes and Eifel areas of West Germany by British geologists interested in Devonian geology...boundary and the problem of the British and Ardennes-Rhineland successions from the upper Famennian to the Namurian |
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| Leibniz University, Welfengarten 1 D-30167 Hannover, Germany Abstract: In some areas of the Variscan orogen...the Hagendorf-Pleystein Pegmatite Province, SE Germany, and present in many ensialic orogens elsewhere...metaquartzites were named by the same author as greywacke-quartzite gneiss. Steiner (1986) treated them...at Gsteinach, Sinatengrün and Göpfersgrün, SE Germany (Fuessl and Weber 2009; 2011). They do, however...mobilization by Forster (1961, 1965) and denominated as greywacke-quartzite gneiss appear in a twofold way intergrown |
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| the Saxo-Thuringian Zone (NE Bohemian Massif, Germany): age constraints, geotectonic setting and basin...Königsbrücker Landstrasse 159, D-01109 Dresden, Germany (e-mail: ulf.linnemann@snsd.smwk.sachsen.de) Abstract:...granitoid plutons. Ediacaran rock complexes in Germany are restricted to the Saxo-Thuringian Zone in the...rocks occur mainly in the Saxo-Thuringian Zone (Germany) and the Tepla-Barrandian Unit (Czech Republic)...French Central EDIACARAN FROM CADOMIAN BASIN (GERMANY) Massif and the Bohemian Massif, excepting the |
 | Pereira, M.F., GutÃerrez-Alonso, G., Murphy, J.B., Drost, K., Gama, C., Silva, J.B. (2017) Birth and demise of the Rheic Ocean magmatic arc(s): Combined U–Pb and Hf isotope analyses in detrital zircon from SW Iberia siliciclastic strata. Lithos, 278. 383-399 doi:10.1016/j.lithos.2017.02.009 | Journal (article/letter/editorial) |
| Eberhard Karls Universität Tübingen, Tübingen, Germany g Instituto de Ciências da Terra de Évora, Departamento...structure exposes strongly deformed phyllites, rare greywacke beds and NU mafic volcanic rocks (Pulo do Lobo...ages 9 ACCEPTED MANUSCRIPT obtained from a greywacke of the Santa Iria Formation, that unconformably...Zone (Figs. 2 and 3). These samples are: two greywacke samples from the Pulo do Lobo Formation (SP-102...Ribeira de Limas Formation (SP-301), one sample of greywacke from the Gafo Formation (SP-101), one sample of |
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| Steeply dipping, well-bedded dolomite. Blaen Nofydd Quarry, Thornhill. 7 [ST 1583 8476) 2 Millstone 3rit....quartzitic sandstones underlain by mudstones. Waun Fawr Quarry, Risca. [ST 2304 9100) 8 4 Pennant sandstone. Coal...Coal seam within the Hughes Beds. Trehir Quarry, Bedwas. [ST 1556 8959) 8 5 Pennant sandstone. Well-bedded...Well-bedded sandstones. Pen-cae-mawr Quarry, Gelligaer. [ST 1157 9958) 9 6 Pennant sandstone. Partially weathered...weathered, near surface flaggy beds. Pen-cae-mawr Quarry, Gelligaer. [ST 1157 9958] 9 7 Pennant Sandstone |
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| assist the quarry industry in meeting their demands. The statistical information and the quarry list are...material supplied by the Ministry of Commerce. A quarry list and statistics of mineral production are prepared...12 WEARING COURSE AGGREGATE PRODU CTION FROM GREYWACKE SOURCES 13 ARRANGEM ENT OF LIST OF SOURCES OF...colour) alternate with hard shale or slate. The greywacke beds are generally thicker and more massive than...the produc tion of lightweight aggregate. The greywacke agg·regates tend to give fairly good results on |
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| Gattendorfia Zone is described from the California Quarry, Boscastle. The possible stratigraphical implications...contention that the Lower Culm contains an important greywacke sequence; these beds are probably of Upper Culm...systems appears on the cliffs below the California Quarry, Boscastle, but the exact nature of the contact...CALIFORNIA QUARRY The beds which structurally overlie the Tredorn Phyllites at the California Quarry are medium...bedding. A similar lithology is exposed in a small quarry a few yards to the north (Grid ref. SX 092 909) |
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| Carboniferous and Jurassic sandstones from Sweden and Germany. Transparent and opaque minerals, i.a. feldspars...microscopy 197 Fig. 4. Lower Carboniferous Elnhausen Greywacke, showing a wide spectrum of rock fragments and...Carboniferous Elnhausen Greywacke, from Elnhausen (type locality), near Marburg=Lahn, Germany (Homrighausen, 1979)...1979) c) Dogger-Epsilon Sandstone, Th€onse, Germany (Vortisch, 1991; Zimdars, 1991) Results Lower Cambrian...microscopy 199 200 W. Vortisch et al. Elnhausen Greywacke This turbiditic sandstone (Fig. 4) contains some |
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| stated to be surrounded by the characteristic greywacke of the south of Scotland. It forms an elongated...examined with equal care. The character of the greywacke strata near Melrose is in general that of the...immediately to the east of Melrose, where the greywacke is not far distant from the trap of the Eildon...many veins of calcareous spar. If we follow the greywacke strata to the eastward, we find them exposed near...uniting itself to the trap of Bemerside Hill. The greywacke strata may easily be traced on each side of the |
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| Gold-bearing ferroselite (FeSe2) from Trogtal, Harz, Germany, and significance of its Co/Ni ratio Alexandre...Adolph-Roemer-Str. 2A, 38678 Clausthal-Zellerfeld, Germany; alexandre.cabral@ tu-clausthal.de Geodynamics...Würzburg, Germany GeoZentrum Nordbayern, Lithosphere Dynamics, Schloßgarten 5a, 91054 Erlangen, Germany Corresponding...cobalt selenide trogtalite, in the Harz Mountains, Germany, forms a trogtalite–ferroselite assemblage in pockets...hematite-impregnated carbonate veins, emplaced in a reddened greywacke of Lower Carboniferous age. Ferroselite contains |
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| section is exposed in the Ingleton " Granite " Quarry. T LITHOLOGY A comprehensive petrographical...Ingleton Inlier (PI. V) we have used the term greywacke, in preference to the indefinite term grit, and...(i) predominantly greywacke, (ii) predominantly slate, (iii) undifferentiated greywacke and slate. There...There are all transitions from massive greywacke into finely laminated slate. Banded series of slates and...transitions between groups (i) and (ii). Coarse greywacke beds occur in many parts of the inlier, rarely |
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| Lower Culm \ Coddon Hill Bedsj I Basement Beds =Greywacke Group = Limestone and Chert Group =Argillaceous...lithology is very uniform across the whole area. Greywacke Group. A very thick series of greywackes (in the...More massive sandstones than those usual in the Greywacke Group have a wide distribution in the central...distinction between them and strata belonging to the Greywacke Group which occur on the same sheet, treating...and the Devonian of South Devon. At Connator Hill Quarry, Godwin-Austen described a basal conglomerate with |
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| this extended mass of mountains is composed of greywacke and clay-slate, with a few beds or veins of felspar...diversity, by far the larger portion consisting of greywacke, composed chiefly of fragments of clay-slate with...diameter. Sometimes also the greywacke incloses distinct angular fragments of greywacke, or of a conglomerate...means distinctly marked. Interstratified with the greywacke are numerous beds of clay-slate, --sometimes apparently...the mere fineness of the material, as in the same quarry, and in beds which do not differ in mineralogical |
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| Arkose, areraindrop bedding slate fication and Greywacke Arkose Three Arkose Possibly Arkose Transition...grits, arkose NORTH greywacke AND greywacke and dolomite, granite and and greywacke, and dolomite, shale...conglomerate, wacke lite Granite Sagana Granite Red Greywacke Arkose With Quartzite Arkose Arkose Arkose Arkose...conglomerate conglomerate conglomerate diorite of arkose greywacke, limestone matrix and arkose and pinksandstone...Carboniferous, Erlenbach Lower England England Beds, Germany Mold, Field, and Coal Ruthin Flint Yorkshire District |
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| Home, however, recognised it as Arenig chert. In a quarry above the farmhouse of Daldowie, at the west end...present the Orthis confinis Beds are only seen in Quarry IV, and all the limestone exposures are limestone-breccia...resting directly on this "compact limestone" (cf. Quarry IV) he claimed that "the line of contact is clearly...a small stream, the succession is as follows:— Quarry I (Lapworth, ? fig. 6). ( L a p w o r t h ' s Ac)...very few other fragments, including cherts and greywacke. Apparently this was the rock quarried for burning |
