Auflistung nach Schlagwort "Gefügekunde der Gesteine"
Anzeige der Dokumente 21-33 von 33
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Microfabrics and deformation processes in magmatic veins of the Thuringian Forest, Germany
(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
(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
(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
(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
(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 ... -
Neue Perspektiven der Texturanalytik von Gesteinen mit konventioneller Röntgenbeugung
(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
(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 ... -
Quartz microstructures in nature and experiment — evidence of rapid plastic deformation and subsequent annealing
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Quartz microstructures produced in short-term deformation and annealing experiments are compared with those in naturally deformed vein quartz in cores from the Long Valley Exploratory Well (Long Valley Caldera, California). ... -
Syn-kinematic magma ascent and batholith inflation (Sierra de San Luis/Argentina)
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The measurement of the anisotropy of the magnetic susceptibility (AMS) is now routinely used since more than four decades in the analyses of rock fabrics in granitic rocks (e.g. Stacy 1960, Henry 1975, Gleizes et al. 1993). ... -
Texturanalysen von Halitmyloniten aus den Salzstrukturen Gorleben, Morsleben und Teutschenthal
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Das Verständnis der Mechanismen und der Prozesse der Gefügeentwicklung und die damit verbundene Charakterisierung der anisotropen physikalischen Eigenschaften von natürlich deformiertem Steinsalz sind von grundlegender ... -
Textures in mylonitised granite from Banefo area in the central part of the Cameroon Central Shear Zone (central Africa) — Kinematics and gradian deformation indicators
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The North Equatorial Panafrican belt is constituted by orthogneissified metamorphic and magmatic sets linked to tectonometamorphic events of the neoproterozoic orogeny. This belt whose formations are situated in the North ... -
The effect of water, temperature and strain rate on the dislocation creep microstructure, recystallized grain size and flow stress of quartz
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Since the work of Griggs & Blacic (1965) it is well known that the crystal plastic flow strength of ‘wet’ quartz samples is much lower than that of ‘dry’ samples deformed at the same conditions, and the general effect of ... -
The importance of lithological heterogeneity of the Onaping Formation for understanding post-impact deformation of the Sudbury Impact Structure, Canada
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The suevitic Onaping Formation overlies the layered Main Mass of the 1.85Ga Sudbury Igneous Complex (SIC) of the Sudbury Impact Structure, Ontario. The Formation consists of four Members, namely from top to bottom, the ...