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| NE Bavaria, Germany Received: 30 June 1994/Accepted: 20 December 1994 Abstract The Leuchtenberg granite...granite (Oberpfalz, NE Bavaria) displays a continuous differentiation trend ranging from mildy peraluminous...to 1000) yield a younger date of 317 + 2 Ma with an enhanced initial 8VSr/S6Sr ratio of 0.7146 + 0.0039...as approaching the crystallization age of the Leuchtenberg granite. The K-Ar age progression within the...GeoForschungsZentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany Editorial responsibility: J. Hoefs and K-Ar dating |
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| in the Steinach Aureole, Bavaria MARTn~ 0Y~RUSCH Mineralogisch-Petrographisches Institut der Universit~t...Universit~t zu KSln (Cologne, Germany) Received May 14, 1971 Abstract. Three garnet-biotite pairs and eleven...triplets from the Steinach aureole (Oberpfalz, North-East Bavaria) were analyzed using an electron probe...the aureole is small, virtually unzoned, and has an average composition of almandine 52 - - spessartine...grade. While the garnets in the highest grade sillimanite hornfelses are poorly zoned, the transitional |
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| 22, 32--72 (1969) Die Gneishornfelse um Steinach in der Oberpfalz Eine phasenpetrologische Analyse*...Analyse* MARTIN 0KRUSCH Mineralogisches Institut der Universit~t Wfirzburg und Department of Geology and Geophysics...Gneiss-horn/elses o/ Steinach, Oberp/alz (Bavaria) Abstract. The southern margin of the Leuchtenberg granite massive...transformed into hornfelses containing andalusite, sillimanite, cordierite, and almandine. Before the intrusion...gneisses and muscovite T biotite ~ garnet • sillimanite -~ staurolite ~- quartz ~- plagioclase in the |
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| biotite—hornblende gneisses, and intruded by the Leuchtenberg granite. Pelitic index assemblages define the...the garnet—sillimaniteand the garnet—kyanite—sillimanite zone of medium pressure metamorphism, which is...a field gradient in the ZEV. An early sillimanite generation (sillimanite I) is found in all mineral zones...kyaniteNsillimanite (sillimanite II), the reaction: garnet#muscoviteNsillimanite (sillimanite III)#biotite#quartz...resorbed under the conditions of stable kyanite#sillimanite#muscovite#quartz. Some staurolite—kyanite zone |
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| I O N S H I P S IN COEXISTING ANDALUSITE AND SILLIMANITE M A R T I N O K R U S C H & B E R N A R D W....Microprobe analyses of coexisting andalusite and sillimanite in hornfelses from four contact aureoles show...resultant stabilization of andalusite relative to sillimanite is geologically rather ins/gnificant. Ferric...pegmatites; pink andatusite from the Steinach aureole, Bavaria, contains up to 3.5% FezO3.The influence...Mineralogisches lnstitut der Uni~ersitiit Wiirzburg, Plew~,ertor strasse 34, 87 Wiirzburg, Germany. B.W. Evans, Department |
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| Origin of late Variscan granitoids from NE Bavaria, Germany, exemplified by REE and Nd isotope systematics...Zentrum Potsdam. Telegrafenberg, D-14473 Potsdam, Germany b Federal Institute for Geosciences and Natural...Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Received 15 November 1994; accepted 2 June 1995...Fichtelgebirge (FG) and Northern Oberpfalz (NOP), NE Bavaria. The data, combined with a number of earlier geochronological...crust in the generation of the granitoids. The Leuchtenberg granite and the G2 and G3 granites yield late |
 | Siebel, W., Trzebski, R., Stettner, G., Hecht, L., Casten, U., Höhndorf, A., Müller, P. (1997) Granitoid magmatism of the NW Bohemian massif revealed: gravity data, composition, age relations and phase concept. Geologische Rundschau, 86. doi:10.1007/pl00014665 | Journal (article/letter/editorial) |
| granitoids of the NW Bohemian massif (northeast Bavaria, west Bohemia) constitute four partly contiguous...GeoForschungsZentrum, Telegrafenberg D-14473 Potsdam, Germany Fax:#0331 288 1645 E-mail: siebel@gfz-potsdam.de...Geologie und Dynamik der Lithosphäre, Goldschmidtstr. 3, D-37077 Göttingen, Germany G. Stettner Rossteinstr...Rossteinstr. 8, D-83607 Holzkirchen, Germany L. Hecht Lehrstuhl für Angewandte Mineralogie und Geochemie...München, Lichtenbergstr. 4, D-85747 Garching, Germany U. Casten Institut für Geophysik, Ruhr-Universität |
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| chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to structural and chemical...chemistry of Variscan-type pegmatite systems (SE Germany) With special reference to structural and chemical...1016/j.oregeorev.2017.11.016 This is a PDF file of an unedited manuscript that has been accepted for publication...chemistry of Variscan-type pegmatite systems (SE Germany) - With special reference to structural and chemical...Leibniz University, Welfengarten 1 D-30167 Hannover, Germany Abstract: The geology of pegmatite systems encompasses |
 | Siebel, W., Breiter, K., Wendt, I., H�hndorf, A., Henjes-Kunst, F., Ren�, M. (1999) Petrogenesis of contrasting granitoid plutons in western Bohemia (Czech Republic) Mineralogy and Petrology, 65 (3) 207-235 doi:10.1007/bf01161961 | Journal (article/letter/editorial) |
| GeoForschungsZentrum, Potsdam, Federal Republic of Germany 2 Czech Geological Survey, Prague, Czech Republic...Geowissenschaften und Rohstoffe, Hannover, Federal Republic of Germany 4Institute of Rock Structure and Mechanics, Academy...unterschiedliche magmatische Entwicklungen nahelegen. Der Bor Pluton umfal3t metalumine Tonalite und Quarzdiorite...alumine, gangbildende Leukomonzogranite (Bor III). Der WaidhausRozvadov Pluton besitzt stark peralumine...S-Typ Granite. Die Bor II Granitoide wurden nach der Rb-Sr Gesamtgesteinsmethode auf 341:k17 Ma (ISr: |
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| the deep continental crust) Crust. 3. Geology - Germany (West) — OberWohlenberg, Jiirgen, 1933- . III....Springer-Verlag Berlin Heidelberg 1989 Printed in Germany The use of registered names, trademarks, etc....Republic of Germany (KTB) would be drilled in the Oberpfalz area of Northern Bavaria. The site...Deutsche Forschungsgemeinschaft (DFG) made after an evaluation by the Project Management of the technical...drilling of of the drill site area are second gives an up date on of the pilot hole. August 1989 complimented |
 | Seidel, Eberhard, Okrusch, Martin, Kreuzer, Hans, Raschka, Helmut, Harre, Wilhelm (1976) Eo-Alpine Metamorphism in the Uppermost Unit of the Cretan Nappe System — Petrology and Geochronology. Contributions to Mineralogy and Petrology, 57 (3) 259-275 doi:10.1007/bf03542937 | Journal (article/letter/editorial) |
| aphisches Institut, D-3300 Braunschweig, F.R. Germany Hans Kreuzer, Helmut Raschka, and Wilhelm Harre...Geowissenschaften und Rohstoffe, D-3000 Hannover 51, P.R. Germany Abstract. The uppermost unit of the Cretan nappe...assemblage brown hornblende + diopside + plagioclase (An 50) while associated metapelitic gneisses consist...cordierite + biotite + sillimanite (andalusite) ± K-feldspar + plagioclase (An 40-50) + quartz. Judging...serpentinite-amphibolite association can be divided into an upper part composed of serpentinite bodies of different |
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| these are: eordierite-f-garne~ hypersthene ~- sillimanite ~- quartz, cordierite + garnet +-~--hypersthene...grids for the reactions cordierite~ garnet -{-sillimanite @ quartz and cordierite -]-hypersthene~garnet...mineral assemblages such as cordierite-garnet-sillimanite-quartz and cordierlte-garnet-hypersthene-quartz...formation of the rare paragenes hypersthene-sillimanite (kyanite)-quartz and sapphirine-quartz. These...20008, U.S.A. 152 B.g. Hensen and D. H. Green: An explanation of the genesis of cordierite and garnet |
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| breakdown in metabasites of the KTB pilot hole, NE Bavaria: implications for the Variscan tectonometamorphic...Republic of Germany 2 KTB Feldlabor, Postfach 67, W-8486 Windischeschenbach, Federal Republic of Germany 3 M...Hubland, W-8700 Wiirzburg, Federal Republic of Germany ReceivedJune 21, 1991 / Accepted June 1, 1992 Abstract...metagabbros and retrograded eclogites of the KTB pilot and an adjacent drilling provide evidence for a multistage...difficult. However, calculations made by assuming an approach to domainal equilibrium show that both the |
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| Relations in Pelitic and Psammitic Gneisses of the Sillimanite-Potash Feldspar and CordieritePotash Feldspar...Lam—Bodenmais Area, Bavaria by P. BLT)MEL and W. SCHREYER Instil ul fur Mineralogie der Ruhr-UniversitSt...Ruhr-UniversitSt, D-463 Bochum, W-Germany ABSTRACT Bulk chemical and mineral analyses were carried out on a progressive...the lower grade (=sillimanite-K-feldspar) zone with coexisting biotite+sillimanite (+K-feldspar+quartz)...ar) zone with coexisting biotite+cordierite±sillimanite (+K-feldspar+ quartz), so that nearly isochemical |
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| West Germany WOLFGANGA. TODT* lnstitut fiir Mineralogie der UniversitPt. Miinster. West Germany and...WILHELMBOSCH Institut fiir Mineralogie der Freien Universittit. Berlin. West Germany Abstract-Field observations...sediments. (2) A sequence of two anatectic events with an intervening regional metamorphism and development...orthogneiss body in the Einetwald forest north of Steinach (Kinzig valley). The metasedimentary rock corresponds...form a linear array on a concordia diagram with upper and lower intercepts of about 2ooO Myr and 524 k |
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| RHEINISCHES SCHIEFERGEBIRGE ARDENNES 'f -eSaar I o PALATINATE !'::' ( &~{ BLACK FOREST Badenweiler - Lenzkirch...Senckenbergstrasse 3 35390 Giessen Germany K. WEBER Institut für Geologie und Dynamik der Lithosphäre Universität...Göttingen Goldschmidtstrasse 3 37077 Göttingen Germany Cataloging-in-Publication D a t a applied for...Correlation Program hosted an international conference in G6ttingen/Giessen, Germany. Discussions were focused...geology of Central Europe. The present book represents an outgrowth of this conference, but is not merely a |
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| fractionation factor = (MnO % in gamet)/(MnO (% in an associated mineral) may be used. The existing data...rapidly poorer in lVlnO. Hollister (1966) has derived an equa- tion for the MIlO content of the outermost...rising Atherton (1968!358) (1968! 358) obi: vl!d an apparently progressive .iecrease jecrease of S obI:...temperature. Complete equilibrt"um equilibrium model As an alternative case, let us consider a garnet-bearing...I~----~ 0.0 0.1 0.2 ~ ~ ~. 0.3 0.4 0.5 g an! assumed to be homogeneous and to have been in equilibrium |
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| decrease in amphibole, K-feldspar and garnet and an increase in biotite und quartz from the margins towards...rocks and was armoured from reaction by quartz-sillimanite sheaths. In the aureole, chloritoid and staurolite...rocks with a restricted bulk rock composition, sillimanite is present in rocks with a high iron content...dabei die eisenreiche Pellite. Sic enthalten in der Kontaktzone Granat-Xenoerysten. Die Umwandlung dieser...Biotit-QuarzPlagioklas fiihrte zu einer Abnahme der Amphibole, Kalifeldsp~ite und Granate. Gleichzeitig |
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| Yellowknife contain biotite, cordierite, gedrite and sillimanite isograds towards the Sparrow Lake granite pluton...gedrite and garnet, and finally andalusite and sillimanite. In the present report, data will be given on...11300'B3~O0' 9..y ISOGRAD C CORDIERITE G GEDRITE S SILLIMANITE ~] BIOTITE-MUSCOVITE GRANITE area Fig.1....biotite cordierite garnet gedrite andalusite sillimanite staurolite a muscovite chlorite b magnetite ilmenite...rutile pyrrhotite pyrite tourmaline apatite Sillimanite Gedrite Cordierite 3 62 12 14 21 27 32 |
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| availability of a new source of Mn, e.g. the release of an appreciable quantity of Mn from some other mineral...developed kyanite, staurolite and garnet, was followed by an episode of undetermined two-micas facies. These episodes...isochemieal; the F/A ratio of both minerals is, in an ACF-diagram, substantially the same. However, this...mobility of Mn. The second example (JB 747) comes from an albite-chlorite-garnet rock, a former banded amphibolite...Grand-St-Bernard nappe. The garnet is relict from an ante-alpine amphibolite facies whereas the assemblage |
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| the Schwarzwald, SW Germany J. Hoefs 1 and R. Emmermann z 1 Geochemisches Institut der Universit/it G6ttingen...G6ttingen, FRG 2 Mineralogisch-Petrologisches Institut der Universit/it Giegen, Senckenbergstrage 3, D-6300...Hercynian granite plutonism, ranging from Upper Devonian to Upper Carboniferous (i.e. from 370 to 280 Ma)...activity occurred at about the time of the Lower/Upper Carboniferous boundary (330 to 315 Ma). SCHWARZWALD...paragneisses SW-Schwarzwald The evolution from the oldest Upper Devonian granites to the large Hercynian granite |
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| Moinian metasediments regionally metamorphosed to sillimanite grade, garnet has subsequently been re-equilibrated... consistent with emplacement of the intrusion at an early stage of regional cooling. THE use in geothermometry...studied (fig. 1) lies in the sillimanite zone of a kyanite-sillimanite regional sequence (Winchester...progressively homogenized in the kyanite and sillimanite zones further east (Anderson and Olimpio, 1977)...metamorphism is higher (Powell, 1974). The regional sillimanite zone around Strontian presumably reflects Caledonian |
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| HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen Modern Approaches in Solid Earth...Pegmatites in an Ensialic Orogen Harald G. Dill Gottfried-Wilhelm-Leibniz University Hannover, Germany Responsible...rocks and minerals (German: Steinpfalz = Stony Palatinate). To cooperate with him meant to have a friend...did not postpone my questions. I did not receive an answer from him, he provided me with a solution....rocks in the Bohemian Massif, which is shared by Germany, the Czech Republic, Poland and Austria, has been |
 | Labotka, Theodore C., Papike, J. J., Vaniman, D. T., Morey, G. B. (1981) Petrology of contact metamorphosed argillite from the Rove Formation, Gunflint Trail, Minnesota. American Mineralogist, 66 (1-2) 70-86 | Journal (article/letter/editorial) |
| Gy Duluth Complex in northeasternMinnesotaintruded an -2 Gy sequenceof sedimentary rocks that includes...argillite unit, a middle transition unit, and an upper thin-bedded greywackeunit. The lower argillite...assignedto the sition unit, and greywackedominatesthe upper unit. Animikie Group. The group unconformably overlies...two upper units is 2.7 Gy Archean rocks and consistsof two units, the about 900 m, but the upper parts...X-ray diffractometry.Selectedsampleswere analyzedwith an ARL-EMXautomatedmicroprobeusing simple silicate standards |
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| Chlorit, und Chloritoid umgewandelt wurden. Granate in der Aureole enthalten Einschltisse yon Quarz, Biotit...einschIut~reicher Zonen im Granat und die GrOge der Einschl0sse nehmen mit zunehmender Entfernung vom...wahrscheinlich auf das Freiwerden yon Mn aus Ilmenit wSJarend der Metamorphose zurfick. Granatk6rner im Kontakthof...Mangananreicherungen in den ~ugeren 200/lm als Resultat der Diffusion yon Fe aus Granat in die Matrix wShrend...h i c pelitic rocks at Darakht-Bid, Iran provides an o p p o r t u n i t y t o investigate the p o l y |
