Auflistung nach Mitwirkenden "Vollbrecht, Axel"
Anzeige der Dokumente 61-80 von 115
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Magnetische Charakteristik von Pyroklastika des Ság-hegy Vulkan Komplex, Kleine Ungarische Tiefebene
Dworazik, Nina; Auer, Andreas; Martin, Ulrike; Németh, Károly; Wall, Helga de; Rolf, Christian (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Der Ság-hegy Vulkan Komplex befindet sich in dem Vulkanfeld der Kleinen Ungarischen Tiefebene. Eine 39Ar/40Ar Datierung ergab ein Alter von 5, 42 ± 0, 06Ma für den Ság-hegy (Wijbrans et al. 2004). Die Entwicklung des ... -
Magnetische Suszeptibilitätsmessungen an Gängen vom Ostrand des Hauzenberger Granitplutons — Bayerischer Wald
Streit, Verena; Wall, Helga de; Dietl, Carlo (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Am Ostrand des Hauzenberger Plutons im südlichen Bayerischen Wald treten Ganggesteine auf, die spät- bis postvariskische Granitoide und ihre Rahmengesteine (anatektische und diatektische Gneise) durchschlagen. Die Intrusion der ... -
Measurement of calcite crystallographic-preferred orientations by magnetic anisotropy and comparison to diffraction methods
Schmidt, Volkmar; Hirt, Ann M.; Burlini, Luigi; Leiss, Bernd; Walter, Jens M. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The anisotropy of magnetic susceptibility (AMS) of rocks reflects the preferred orientations of minerals. Therefore AMS is a quick and easy way to characterize rock fabrics (Hrouda 1982,Borradaile 1988); the obtained result ... -
Metastability and HP metamorphism at fluid deficient conditions, an example from the Bergen Arcs (Western Norway)
Kühn, Alexander; Austrheim, Haakon (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)In the Lindæs Nappe, Bergen Arcs Western Norway, Precambrian granulites facies anorthosites (P<10 kbars, T=800°C) and their Caledonian eclogite (P<17 kbars, T=700°C) and amphibolite facies equivalents alternate on meter scale. ... -
Methodische Untersuchungen am Kreta-Detachment (Kreta, Griechenland): Anzeichen für eine alpidische Metamorphose der Hangendscholle
Klein, Thomas; Zulauf, Gernold; Craddock, John; Glodny, Johannes (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Die Insel Kreta bildet den südlichen Rand der externen Helleniden, welche üblicherweise in zwei Deckenstapel untergliedert werden: Die unteren Decken (Plattenkalk und Phyllit-Quarzit- Einheit) sind durch eine alpidische ... -
Microfabrics and deformation processes in magmatic veins of the Thuringian Forest, Germany
Neubert, Jana; Klauw, Sebastiaan van der; Kley, Jonas (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The research area is located in the Ruhla-Brotterode crystalline complex in the western part of the Thuringian Forest (Germany), about 20km southsouthwest of Eisenach. The investigated outcrops occur at the eastern and ... -
Microfabrics and textures of quartzites of the Indiavaí- Lucialva shear zone, SW Amazonian Craton: preliminary conclusions
Almeida, Harrizon Lima de; Ruiz, Salina; Vollbrecht, Axel (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The purpose of this contribution is to present preliminary results regarding the kinematics and deformation conditions of the Indiavaí-Lucialva Shear Zone, based on the analysis of the texture and microfabrics of ... -
Microstructural analysis of the RWTH-1 cores in thinsections
Scholz, Katerina; Urai, Janos L.; Trautwein, Ute; Kukla, Peter A. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The Aachen RWTH-1 well was drilled to 2544mTVD for geothermal purposes and gives substance to extensive geoscientific research. It is located in a hydrothermally and seismically active area of the Aachen Anticline, 500m ... -
Microstructural evidence of impact-induced crystalplastic deformation and postshock annealing of quartz
Trepmann, Claudia A.; Spray, John G. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)During impact, rocks at the surface and accessible depths encounter extreme conditions. The hydrostatic component of the shock wave-associatedstress, the so-called shock pressure, canreach several tens of GPa in the central ... -
Microstructures of fibrous halite veins
Hilgers, Christoph; Pennock, Gill; Schléder, Zsolt; Burliga, Stansilaw; Urai, Janos L. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Halite veins hosted in clastic sedimentary rocks are frequently observed next to evaporite layers. Their microstructure can be enhanced by gamma irradiation and etching, which can be used to infer the deformation mechanism of ... -
Mikrostruktur und Textur nach Scherverformungsversuchen an Hämatiterzen
Siemes, Heinrich; Klingenberg, B.; Rybacki, E.; Naumann, M.; Walter, Jens M.; Jansen, Ekkehard; Kunze, Karsten (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Die Beziehungen zwischen der Mikrostruktur und der kristallografischen Vorzugsorientierung (Textur) von Hämatiterzen der gebänderten Eisenerzformation (BIF) in Brasilien wurden in vielen Veröffentlichungen behandelt, ... -
Multi-stage emplacement of the Götemar Pluton, SE Sweden: new evidence inferred from field observations and microfabric analysis, including cathodoluminescence microscopy
Friese, Nadine; Vollbrecht, Axel; Tanner, David; Fahlbusch, Wiebke; Weidemann, Miriam (International Journal of Earth Sciences, 2011)The emplacement of the Mesoproterozoic Götemar Pluton into Paleoproterozoic granitoid host rocks of the Transscandinavian Igneous Belt is re-examined by microfabric analysis, including cathodoluminescence microscopy. Field ... -
Neotectonic markers in the Panafrican belt formations of Cameroon: elements of interpretation and their environmental impacts
Kouankap, Nono Gus D. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The North equatorial Panafrican Belt, whose Cameroonian formations are dated between 650 and 400 million years, and which are located in the North of the Congo Craton, is subdivided in to three major geodynamic domains: a ... -
Neotectonics in the Swiss Alps—A late Alpine to postglacially active fault at the Gemmi Pass
Ustaszewski, Michaela; Pfiffner, Adrian; Herwegh, Marco (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The area of the central and western Swiss Alps reveals not only the highest uplift rates of Switzerland (1.5mma−1 near Brig, Schlatter & Marti 2002), but also shows a strong concentration of earthquakes (e.g. Deichmann ... -
Neue Perspektiven der Texturanalytik von Gesteinen mit konventioneller Röntgenbeugung
Leiss, Bernd; Ullemeyer, Klaus (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Technische Entwicklungen und verbesserte Messmethoden haben in den vergangenen 15 Jahren in der Gesteinstexturanalyse zu einer zunehmenden Nutzung vor allem der Elektronen- und Neutronenbeugung geführt. Dabei ist die ... -
Neutron time-of-flight texture measurements in Dubna: Status and developments
Ullemeyer, Klaus; Behrmann, Jan H. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The multidetector texture diffractometer SKAT (from Russian: Spektrometer Kolitshestvennovo Analiza Tekstury) at the pulsed reactor IBR-2 in Dubna, Russia, started operation in March 1997 and is open for users from ... -
Oligocene emplacement of the Eclogite Zone of the central Tauern Window, Eastern Alps, Austria
Kühn, Alexander; Glodny, Johannes; Ring, Uwe (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The EZ is an approximately 20km long and 2–3km wide coherent unit of the Tauern Window in the Eastern Alps. It is sandwiched between the Venedigerand the Glockner Nappe. While rocks in the EZ experienced HP metamorphic conditions ... -
Origin of Central Andean collapse calderas
Regional strains in tectonically active volcanic provinces may have a profound influence on the mode of collapse caldera formation. Conversely, the deformation pattern, more specifically, the symmetry of plan-view strain ... -
Paläofluide in störungskontrollierten Bruchsystemen der Aachener Geothermie-Bohrung
Lögering, M.J.; Kolb, J.; Meyer, F.M.; Schwarzbauer, J. (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)In der vorliegenden Arbeit werden geologische Prozesse im Untergrund des linksrheinischen Rhenoherzynikums und deren Verhältnis zum regionaltektonischen Rahmen anhand der Proben aus der Aachener Geothermie- Bohrung mit dem ... -
Perturbation of isotherms below topography: constraints from tunnel transects through the Alps, Gotthard road tunnel
Glotzbach, Christoph; Spiegel, Cornelia; Rahn, Meinert; Reinecker, John (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)For many years it has been known that near surface isotherms are influenced by the topography (Lees 1910). Recently, a number of studies were pursued to quantify the effect of topography on low temperature isotherms ...