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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...Fe-rich edges, the average composition being almandine 67--spessartine 4 - - pyrope 4 - - grossular (-4-andradite)...small, virtually unzoned, and has an average composition of almandine 52 - - spessartine 37 - - pyrope |
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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...containing andalusite, sillimanite, cordierite, and almandine. Before the intrusion of the granite, the country...cordierite z almandine + biotite ~- quartz ~- plagioclase and sillimanite ~ cordierite • almandine ~ biotite |
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| biotite—hornblende gneisses, and intruded by the Leuchtenberg granite. Pelitic index assemblages define the...observable trace of a field gradient in the ZEV. An early sillimanite generation (sillimanite I) is found...Darmstadt, Schnittspahnstr. 9, D-64287 Darmstadt, Germany Fax: # #49 6151 164628 E-mail: schulte@hrz.hrz1...sediments. Actually, the ZEV is divided by the Leuchtenberg granite into a narrow eastern and a larger western...intergrowth VB HB t en am ine nL nia co an Fr ne Li an ni er co ov an cc Fr oi oz es M 5 km crd zone grt-ky-sil |
 | 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 |
 | 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: |
 | 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...sillimanite (andalusite) ± K-feldspar + plagioclase (An 40-50) + quartz. Judging from relevant experimental...serpentinite-amphibolite association can be divided into an upper part composed of serpentinite bodies of different |
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| Variscan post-tectonic cooling in the Schwarzwald, Germany G. Markl Institut ftir Mineralogie, Petrologie...Albert-Ludwigs-Universit~it, Freiburg, Federal Republic of Germany With 10 Figures Received January 27, 1999; revised...plagioclase-biotite-quartz-gneiss at Artenberg, Schwarzwald, Germany, contains up to 10 cm wide calcite veins partially...reaction in an open system of the hydrothermal carbonate with the orthogneiss in the presence of an externally...wollastonite at the above P-T conditions records an Xco2 of the fluid phase below 0.05. Chemical potential |
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| 20008, U.S.A. 152 B.g. Hensen and D. H. Green: An explanation of the genesis of cordierite and garnet...become pure magnesian end-members. This happens at an invariant point in the end-member system at which...known. The limiting reaction for the breakdown of almandine (in the presence of plagioclase) i.e. fayalite+...fayalite+ h e r c y n i t e + quartz~-'-almandine has been taken from the results on the ]30 composition (ttensen...invariant point involving the phases Fe-cordierite, almandine, fayalite, hercyaite and quartz. The position |
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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 |
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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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| 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 |
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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...(JB 812) is that of a fractured and ehloritized almandine from the l~uitor massif in the Grand-St-Bernard...developed kyanite, staurolite and garnet, was followed by an episode of undetermined two-micas facies. These episodes...metamorphism. The garnet composition is: 77.3% almandine, 9.4% pyrope, 13.0% grossularite and 0.3% spessartine...isochemieal; the F/A ratio of both minerals is, in an ACF-diagram, substantially the same. However, this |
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| decrease in amphibole, K-feldspar and garnet and an increase in biotite und quartz from the margins towards...pressures. In the schistose thermal aureole, almandine porphyroblasts decrease in size and abundance...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...Quarz ausgehend yon den Rilndern nach dem Zentrnm der Tonalitmasse bin. Es ist zu vermuten, dab das Magma |
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| iron chlorite, approximately 550 ~ at 2 kb, is at an fo2 between assemblages (1) and (2) listed below...magnetite + quartz; (4) magnetite + mullite + quartz. Almandine should replace cordierite in assemblages (1) and...the relationship between iron cordierite and almandine in this system is discussed. At water pressures...parallel curve, almandine replaces iron gedrite. For fo2 on this buffer curve, almandine is unstable below...container was minimized by placing the charge in an unsealed silver container. Products were examined |
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| Aufsatze THIEDIG, F.: Der siidliche Bahmen des Saualpen-Kristallins in K~irnten (Geologische Neuaufnahme...Zusammenfassung Der Schneeberger Gesteinszug ist eine S c h I i n g e i m voralpidischen Kristallinsockel der Otztal-Stubaier...Otztal-Stubaier Alpen und der Gneiszone Meran-Mauls. Er ist keine selbst~indige alpidische Schubmasse und...und Ningt nicht mit der oberostalpinen Steinacher Decke zusammen. Die Deformations- und Kristallisationsgeschichte...Achsengefiige und Regelungsgrad sowie nach der Mineralfazies unterscheiden. Der Schneeberger Gesteinszug wurde in |
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| in which hydrous Fe-cordierite breaks down to almandine, sillimanite, quartz, and water was previously...key X-ray diffraction peaks of cordierite and almandine. Our results show that the 'four-phase equilibrium...variation in nC~ in cordierite in equilibrium with almandine, sillimanite, and quartz under the conditions...the univariant curves in P-T space have resulted in an amazing array of conflicting representations of the...possible to obtain an experimental determination of the cordierite breakdown reaction for an anhydrous cordierite |
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| consistent with emplacement of the intrusion at an early stage of regional cooling. THE use in geothermometry...the western Highlands of Scotland. intrusion, and an inner cordierite-potash feldspar zone is defined...x x x x x X X X X X X X X musc have an outer rim in which Mg/(Fe + Mg) decreases and Mn...locality, 572C (fig. 2a) has distinct internal zoning. An inner, relatively Ca-poor core is flanked by a zone...and Olimpio (1977, fig. 5). Some other garnets show an increase in Ca near edges, which may be a relic of |
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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 |
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| Kamineni (1973), and especially by Ramsay (1974), who in an area near Yellowknife demonstrated that muscovite...about 2 per cent of the amount of element present. An A.R.L. electron micro-probe at Queen's University...temperature of crystallization. Gedrite Gedrite, an aluminous orthoamphibole, is found locally in these...= F e +2, Mg, Mn, Ca; R+3=A1, Fe +3. Notice that an introduction of Na into the A site, which in anthophyllite...346 (X) 5.560 5.847 5.872 5.720 5.834 almandine pyrope spessartine grossularite 69.4 8.3 17.8 |
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| higher temperatures of high grade metamorphism (upper almandine amphibolite facies to granulite facies). The...analyses were carried out ,an a T.P.D. microprobe (Fontijn et al. 1969) with an energy dispersive X-ray...analyses Partial chemical analyses were carried out with an A.R.L. electron microprobe fitted with three crystal...(omphasRe) + phengite + amphibole + quartz+r utile. In an experimental study on Fe, Mg partition between garnet...inference that zoning of these minerals is largely due to an increase in the temperature, as Kv(Fe,~)-values generally |
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| temperatures Fe cordierite breaks down alone to almandine, sillimanite, quartz and water at pressures above...cordierite composition for the two reactions intersect in an F e - M g univariant reaction of sillimanite-biotite-quartz...reaction so that it becomes a reasonable reaction for upper amphibolite and granulite facies conditions. The...and (3) the reaction which forms cordierite, almandine, and K feldspar is a possible melt-forming reaction...and S.M. Lee aluminum silicate, staurolite and almandine (Turner, 1968). With increasing temperature, these |
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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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| pressure and temperature changes in metamorphic rocks; an approach and software Shah Wali Faryad, Josef Ježek...pressure and temperature changes in metamorphic rocks; an approach and software, LITHOS, https://doi.org/10...1016/j.lithos.2019.03.002 This is a PDF file of an unedited manuscript that has been accepted for publication...pressure and temperature changes in metamorphic rocks; an approach and software Shah Wali Faryad* faryad@natur...We present an approach and software for modelling the Compositional Zoning in Garnet and AN its Modification |
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| conditions of formation of natural samples assuming that an assemblage can be identified that approaches equilibrium...controlling mechanism. The diffusion process presents an attractive hypothesis for rate control of reactions...proximity to incompatible phases and therefore provides an especially illustrative example of the importance...which the time of reaction can be estimated within an order of magnitude. In addition, disequilibrium in...samples considered underwent a reaction path involving an increase in temperature and probably a significant |
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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 |
Steinach, Leuchtenberg, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany