Auflistung nach Schlagwort "Deformation <Geologie>"
Anzeige der Dokumente 21-29 von 29
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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 ... -
Origin of Central Andean collapse calderas
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)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 ... -
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). ... -
Relevance of viscous flow in accretionary wedges
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The orogenic wedge model (Davis et al. 1983; Platt 1986) marks a conceptual breakthrough in understanding the growth and long-term evolution of accretionary wedges. The characteristic rheology of subduction-related ... -
Scherzonen- und Schuppenbildung am Kontakt von im Bereich der Engelhörner, Berner Oberland (Schweiz)
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Das Untersuchungsgebiet umfasst den Nordrand des Aarmassivs, die autochthone und paraautochthone sedimentäre Bedeckung des Aarmassivs, den ultrahelvetischen Wildflysch und den Südrand der Wildhorndecke. Das Aarmassiv besteht ... -
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 ... -
The role of penetrative deformation in orogenic processes. An example from the Eastern Cordillera of Colombia
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The Lower Cretaceous units of the Eastern Cordillera of Colombia have been deposited during a stage when the area where nowadays lies a contractional orogen was an actively deforming rift. Therefore, they are syn-rift ...