 | | Journal (article/letter/editorial) | | Oldenzaal, juni 1982 3 ill. Een vijzel van Drachenfels-trachiet uit Dorestad H . Kars ABSTRACT Within...consisting of quartz trachyte to quart latite. This rock was quarried at the Drachenfels a volcanic mountain...mountain situated in the Siebengebirge near Königswinter, WestGermany. INLEIDING Als aanvulling op eerder...over de import en toepassing van de zogenoemde Drachenfels-trachiet in ons land in de middeleeuwen (ANDERSON...latitische samenstelling dat waarschijnlijk van de Drachenfels afkomstig is. 1 ') In het Kantonnaal en stedelijk |  | | Journal (article/letter/editorial) | | from the Oligocene Siebengebirge Volcanic Field (Germany): Implications for the Origin of Intracontinental...UNIVERSITA«T BONN, POPPELSDORFER SCHLOSS, 53115 BONN, GERMANY 2 OMYA DEVELOPMENT AG, BASLERSTRASSE 42, 4665...MINERALOGIE, ZU«LPICHER STR. 49A/B, 50674 KO«LN, GERMANY 5 INSTITUT FU«R MINERALOGIE, UNIVERSITA«T MU«NSTER...MU«NSTER, CORRENSSTRASSE 24, 48149 MU«NSTER, GERMANY RECEIVED JUNE 27, 2011; ACCEPTED JULY 11, 2012 ADVANCE...scenarios, either extensional tectonics in the north Alpine realm or upwelling of deep mantle material |  | Schneider, K. P., Kirchenbaur, M., Fonseca, R. O. C., Kasper, H. U., Münker, C., Froitzheim, N. (2016) Role of crustal assimilation and basement compositions in the petrogenesis of differentiated intraplate volcanic rocks: a case study from the Siebengebirge Volcanic Field, Germany. Contributions to Mineralogy and Petrology, 171 (6) doi:10.1007/s00410-016-1271-7 | Journal (article/letter/editorial) | | case study from the Siebengebirge Volcanic Field, Germany K. P. Schneider1,2 · M. Kirchenbaur2 · R. O. C...Siebengebirge Volcanic Field (SVF) in western Germany is part of the Cenozoic Central European Volcanic...Universität Bonn, Meckenheimer Allee 169, 53115 Bonn, Germany 2 Institut für Geologie und Mineralogie, Universität...Universität zu Köln, Zülpicher Straße 49a, 50674 Cologne, Germany 207 Pb/204Pb compositions requiring the...Siebengebirge Volcanic Field (SVF) is located in western Germany within the Rhenish Massif and is part of the widespread |  | | Journal (issue) | | and cleavable Calcite . .5 cts . Greasy and Rose Quartz , Triplite AND ORES . 7 cts . Amblygonite , Damourite...of peculiar quartz crystals , im planted on pyrite , galenite and sphalerite , each quartz crystal piercing...one of a cats - tail fag . Good crystals of smoky quartz , feldspar and amazon stone , are found near Milford...form , with the back indented by terminations of quartz crystals , is found above Ogdeu Canon . Five micaceous...iently to find the way down . The geology of the Rhine Valley was interesting , but it has already been |  | | Journal (article/letter/editorial) | | montcbrasite, 414. Germany (Deutschland) Chursdorf, Penig, Saxony, amblygonite, 414. Drachenfels, Pfalz, alkali...gersdorffite, 26. Musen, Westphalia, gersdorffite, 26. Petersbach, Siegen, Westphalia, ullmannite, 26. Silberbaeh...947- TOPOGRAPHICAL 970 Miragpur, juddite, 7o8. North Tirodi, juddite, 317, 708. Ponia, juddite, 7o8....lherzolite, diorite, pyroxenite, 37o. Zaria, cleaved quartz, 734. Somalia Darkainle, mboziite, 317. Congo...district, Transvaal, hypersthene, dolerite, 9o9. NORTH AMERICA Greenland Kangerdlugssuaq, arfvedsonite |  | | Journal (article/letter/editorial) | | kilometres through Western Germany, set out on the journey which terminated at Cologne. Under Professor Wunstorf...was first studied. Quarries at Bilster Miihle, north of the Kornelimiinster, showed sandstones and shales...rainfall tends to form extensive peaty moorlands. North of the Lammersdorf a railway-cutting reveals a finegra...towards the south. On the other hand, towards the north-west as far as the Venn anticline, a special type...type of folding occurs dir ected towards the north-west. From Gemiind the route passed up Blumenthal. On |  | | Book | | Martin Meschede Laurence N. Warr The Geology of Germany A Process-Oriented Approach Regional Geology...Reviews Series editors Roland Oberhänsli, Potsdam, Germany Maarten J. de Wit, Nelson Mandela University, Port... Martin Meschede • Laurence N. Warr The Geology of Germany A Process-Oriented Approach 123 Martin Meschede...and Geology University of Greifswald Greifswald, Germany Laurence N. Warr Institute of Geography and Geology...Geology University of Greifswald Greifswald, Germany ISSN 2364-6438 ISSN 2364-6446 (electronic) Regional |  | | Report (issue) | | From eclogite nodules in kimberlite. Association: Quartz, sodic plagioclase, muscovite, biotite, \hornblende...in crystals of any size. In Germany, from Drachenfels, Siebengebirge, Rhine; and at Hohenfels, Mendig, |  | | Journal (article/letter/editorial) | | on a larger scale. The Palseozoic block in the north emerges from below the transgression of the Upper...by faults of north and south direction which seem to be the prolongation towards the north of the great...great graben of the Upper Rhine formed in Tertiary times. But the shore facies of the Upper Permian (Zechstein)...different in composition. Towards the west, the north-westerly part of the Rhenish Schiefergebirge is...In a similar way the old block is divided on the north by the triangular area of subsidence, called the |  | | Journal (article/letter/editorial) | | cleavage. Hardness between that of felspar and that of quartz. Sp. gr. = 3.150 (at 21" C.), Quite intherefore...iron-glance. The felspar is intergrown with grey quartz and black mica, the latter being sometimes interlaminated...Scacchi, who, however, mistook them for felspar. 2. Quartz has been found, together with iron-glance, in the...sanidine-oligoclnse trachytes, or the so-called Drachenfels variety. This is tchefourth instance of the occurrence...nepheline in the volcanic district of the Lower Rhine, the other three being-(] .) in the sanidine blocks |  | | Journal (article/letter/editorial) | | vesicular lava from the Rhine, and in the white trachyte from the Drachenfels on the Rhine, in tolerable quantity...3rd, gray vesicular lava from Niedermennig on the Rhine ; 4th, white traehyte from the Draehenfels; 5th...in a green aluminous mass and accompanied with quartz, calcareous spar and bitter spar. Its specific |  | | Report (chapter) | | Rhenish tuffs from the volcanic Eifel region in Germany, in particular the so-called Römer tuff, are among...evaluation. Volcanic tuffs from the Eifel region, Germany, constitute a major part of the Dutch built cultural...markets from which tuff, imported over the river Rhine, was distributed over large parts of the country...(around Bruges; Slinger et al. 1980) and in northern Germany and western Denmark (Haiduck 1992). Important Dutch...was partly due to the levy of toll on the river Rhine, whereas Bentheim sandstone could be imported over |  | Gemignani, L., Kuiper, K.F., Wijbrans, J.R., Sun, Xilin, Santato, A. (2019) Improving the precision of single grain mica 40Ar/39Ar-dating on smaller and younger muscovite grains: Application to provenance studies. Chemical Geology, 511. 100-111 doi:10.1016/j.chemgeo.2019.02.013 | Journal (article/letter/editorial) | | Earth Science, Freie Universitaet Berlin, Berlin, Germany. IP b: Faculty of Science, Department of Earth...Turin, Italy. d: ThermoFisher Scientific, Bremen, Germany. US Editor: Chemical Geology AN References:...with the 1012 amplifiers on the in-house AN Drachenfels (DRA) standard. The use of the new 1013 Ohm amplifiers...using the new 1013 Ohm amplifier by comparing Drachenfels sanidine standard data collected with a 1012...were stacked in 9 mm ID quartz tubes together with the monitor standard Drachenfels sanidine dated at 25 |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...far from a simple task because the "'Gewstones of North America. 8 artist must know minerals in order...second piece: the flakes are mica, the glassy grains quartz, and the yellowish grains feldspar. The whole specimen...hich feldspar, quartz, and mica are the main constituents. Quartzite consists of quartz only, mica schist...schist of quartz and mica, and eclogite of garnet and augite. There are also rocks which consist of fragments |  | | Journal (article/letter/editorial) | | 4H~O, as apple-green masses with cassiterite and quartz from near Arandis, Swakopmund district, South-West...Heinrich Emil Georg Busz [1863-1930], of Miinster, Westphalia. [M.A. 4-149.] Caesium-berfl. S.L. Penfield...gummite a zone of alteration around uraninite from North Carolina. Named after Prof. Frank Wigglesworth Clarke..., Anorthoklas-Sanidin). Felspar from the Drachenfels, Rhine, with the tabular habit of sanidine but with...Ca)C12.2H20} + 2{Al~O~. H20}, rhombohedral; from the north German potash-salt deposits. Named after Bergrat |  | | Journal (article/letter/editorial) | | thermal decomposition of, and of mixtures with quartz or dickite or both, i28. Amblygonite, France, Maine...albite, I56; - - , anal., d2o i, 489. Amoibite, Germany, anal., opt., X-ray, 26. Amos Stream, New Caledonia...682; Norway, anal., 693; Norway, exsolution of quartz from, 815. Bit Meneiga, Egypt, antigorite, lizardite...with hornblende, 923. Dadsonite, Canada, Nevada, Germany, and synthetic, anal., opt., X-ray, 437. Darkainle...), X-ray powder data for idocrase, 343. Drachenfels, Germany, alkali feldspar, anal., d2o i, 489. Drakewalls |  | | Journal (volume) | | Cambridge) VII. . . . Basin of the Eden, and north- western Coasts of Cumberland and Lancashire. ...260, — /or Berston Benston 2G2, — for South read North — — for between Gin Cross read from Gore Cross 273...an interesting object of com- parison with the north-eastern terminations of the same strata on the coast...northern extremity of Portland about sixteen miles north-westward to Burton Castle, and causing the sea to...Golden Cap The cliffs Vale of it bounded on the north and two into Weymouth and east distinct compart- |  | | Journal (article/letter/editorial) | | difficulty of access to foreign literature in Germany that Osann does not mention Washington's latest...tonalite, as a modification of quartz-diorite. Osann notes the abundance of quartz in these rocks, which the...Rosenbusch. would suggest is the main difference from quartz-diorites. He would therefore rather ascribe granodiorite...smaller amount of bisilicates, and often a little quartz. Gabbros, on the other hand, frequently carry olivine...with Loch Borolan. Rockallite is described as a quartz-tinguaite or grorudite, which ascription is clearly |  | | Journal (article/letter/editorial) | | on the Physical Structure of West Somerset and North Devon (Quart. Journ. Geol. Soc., vol. xxiii. p....decomposed. C Fine Slate. D Fine Slate, much crushed. E Quartz vein. F , F Soil, Ground rising above. The annexed...certainly being orthoclase. A few small grains of quartz are visible. Here and there are brown ferruginous...rather resembling altered ilmenite), a few small quartz grains, and numerous felspar crystals. Most of...aggregates of viridite (? replacing magnesia mica). The quartz is pretty clear, but here and there it contains |  | | Journal (article/letter/editorial) | | by its being more largely crystallized. On the north side of the Lower Ottawa Valley Sir W. E. Logan...alternating with clay-slate (Silurian ?) and a coarse quartz-rock. When pure it contains 81 per cent, of basic...of Bohemia, the lowest beds of the Silurian of North America, are often full of remains of highly organized...in the course of a geological excursion on the north shore of the St. Lawrence, at the base of Cape Tourment...augite-rock, porphyry, and vesicular lava (Rhine); white trachyte (Drachenfels); dark-red scoriaceous !! 206 |  | | Journal (article/letter/editorial) | | that the principal minerals found in veins such as quartz, spathose iron, red silver ore, &c., may be produced...evidence of volcanic disturbance. Lastly.-Crystalline quartz, iron pyrites, mercury sulphide, and various other...and 6.70 soda, with small quantities of lime and quartz. Pisani, however, finds that its composition is...inasmuch as, amidst all the multifarious forms of quartz-crystals scattered over the earth, not one has...been known to assume any of the hexagonal forms of quartz. On the other hand, the replacement of silica by |  | | Journal (article/letter/editorial) | | rather resembling altered ilmenite), a few small quartz grains, and numerous felspar crystals. Most of...aggregates of viridite (? replacing magnesia mica). The quartz is pretty clear, but here and there it contains...sanidine trachyte (there is hardly enough free quartz for a rhyolite) with a rather variable base, imperfectly...microliths (perhaps not very unlike some of the Drachenfels trachyte). A slight amount of brecciation may...Devonian Period. IV.—ERRATICS AT HIGH LEVELS IN NORTH-WESTERN AMERICA— BARRIERS TO A GREAT ICE-SHEET. |  | | Journal (article/letter/editorial) | | Alexandria, who shipped them area at Sheridan and that north of Noblesville has not There doubtless to Liverpool... ....... 1874 . ... . . . . . . 1882 Drachenfels to Rhine........ .. Pike's Peak and Manitou . . ...minutes' working, at a pressure of 20 lb. It is The quartz or other ore is first heated to a fair red purpose |  | | Journal (article/letter/editorial) | | (IIo). (211) Moyite. The rocks of this family are quartz-orthogranites. Since three of the rocks described...Judd"describes the rock as composed of aegirite, quartz, and albite. While the presence of aegirite makes...temporarily, for the family name. Rockallite is a quartz-rich aegirite-albite-tonalite. (216) Orthogranite...Orthogranitite. 'Reginald A. Daly, "Geology of the North AmericanCordilleraat the Fortyninth Parallel," Geol...Texas, by Osann.2 It is a dike rock composed of quartz, microperthite,and riebeckite. Albite-granite. |  | | Journal (article/letter/editorial) | | consists essentially of translucent, slightly milky quartz, a little calcite in discrete and fairly large...castellated terminations. The main associated mineral is quartz; a little calcite, epidote, sphene, and interstitial...Formation of Brioverian (Upper Proterozoic) age, to the north of Dannemarche Reservoir in Waterworks Valley-and...in a weakly alkaline environment and Kalb's Drachenfels, Striegau, and Zillertal types. Adularia of ideal |
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