Auflistung 11. Symposium "Tektonik, Struktur- und Kristallingeologie" , 2006-03 nach Erscheinungsdatum
Anzeige der Dokumente 41-60 von 111
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Holocene shield volcanoes in Iceland
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Holocene shield volcanoes (lava shields) are common in Iceland, but they are restricted in space and time. As regards space, most of the shield volcanoes in Iceland occur within two bands in the West and North Volcanic ... -
Structural contacts in the Late Paleozoic accretionary wedge of central Chile and their tectonic significance for the evolution of the accretionary complex
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The Chilean accretionary wedge is part of a Late Paleozoic subduction complex that developed during subduction of the Pacific plate underneath South America. The wedge is commonly subdivided into a structurally lower Western ... -
Structural control of fluid flow on a carbonate platform margin: an example from the Otavi Mountainland, Namibia
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The present study focuses on the northwestern OML, southwest of the mining town of Tsumeb. The dominating structure in this area is the NW-SE striking Guinas Fault. The Guinas Fault is a shear zone that divides an area, ... -
Experimental study of the evolution of fault gouge in layered sand–clay sequences
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)This study focuses on clay smear processes during fault gouge evolution in sand-clay sequences at depths up to 2 km. A clay-rich fault gouge can dramatically lower the fault’s permeability, and prediction of this process ... -
Crystal distribution patterns and their anisotropy behaviour in igneous rocks: towards an automated quantification, first results
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Since approximately two decades fractal geometry offers tools for the quantification of rock fabrics, and new methods are currently under development to investigate the inhomogeneity of crystal distributions, grain- ... -
Discrimination of different volcanic rock units by magnetic properties — geothermal field at Reykjanes peninsula (SW-Iceland)
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The geothermal field at Reykjanes peninsula is located at the boundary where the submarine Reykjanes Ridge passes over into the rift zone of southwestern Iceland. The geothermal field coincides with a magnetic low in ... -
Fossil overpressures compartments? A case study from the Eifel area and some general aspects
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Fluid overpressures are well known from hydrocarbon exploration in many sedimentary basins. They can reach almost lithostatic values, and may cause the fracturing of rock. Fracturing allows the discharge of fluid overpressure, ... -
The timing of polyphase Miocene tectonics in Northern Romania
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)This study addresses the polyphase Miocene tectonic evolution in the Maramures area (northern Romania) by combining field observations, stratigraphic arguments and fission-track analysis (Tischler et al. in press). ... -
Two-dimensional finite element models of convective heat transfer in the upper crust — implications for the interpretation of fission-track data
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Fission-track (FT) thermochronology is a tool routinely used for studies of surface denudation because of its sensitivity to the low temperatures found in the uppermost part of the crust. FT ages and associated track length ... -
Felsmechanische Untersuchungen am Hauptrogenstein (bjHR) der Vorbergzone des südlichen Oberrheingrabens
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Der Hauptrogenstein ist im Ober- Bajocium, im Braunen Jura(bjHR), gebildet worden. Im Bereich des südlichen Oberrheingrabens ist der Hauptrogenstein als hellgrauer bis hellbräunlicher, schräggeschichteter bis massiger Kalkoolith ... -
Regional fold structure analysis in the Eastern Alpi Apuane, Northern Apennine
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The Alpi Apuane represent a large tectonic window within the Northern Apennine in Italy. In this area, not only a complete succession of the tectonic units of the Northern Apennine can be studied, but also the structures that ... -
Influence of viscosity on growth of high pressure phases in computer experiments
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The general aim of the project is the examination of microstructures that develop under HP conditions in computer experiments. Starting point is an interest in the dynamics of HP phase transitions, as for instance the ... -
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). ... -
Cadomian and Variscan metamorphic events in the Léon Domain (Armorican Massif) resolved by trace element analysis in monazite and garnet
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The question, whether crustal domains are allochthonous terranes or not is crucial for plate tectonic models of the Ibero-Armorican segment of the Variscan belt. The Léon Domain in the Armorican Massif appears as a ... -
Correlation of magnetic fabric and crystallographic preferred orientations of naturally deformed carbonate — mica rocks from the Alpi Apuane in Italy and the Damara Orogen in Namibia
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The anisotropy of magnetic susceptibility (AMS) is a time-efficient method to describe crystallographic preferred orientations of rocks and has been applied in a wide field of sedimentary, metamorphic and magmatic geology. ... -
Über die mechanischen Ursachen von parallelen Abschiebungen
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Gruppen von parallel einfallenden Abschiebungen treten in der Natur sehr häufig und in unterschiedlichsten Dimensionen auf. Existierende, überwiegend experimentelle Arbeiten führen einheitliches Einfallen auf laterale ... -
The significance of fractures in Europe
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Analytical modelling of geological fractures is now at an exciting stage. In view of the ever-mounting amount of fracture data available, and the need for a European overview of the state of the art, we correlate fractures ... -
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 ... -
Die neogene Entwicklung des zentralen Tien Schan, Kasachstan. Erste Ergebnisse von Apatit-Spaltspurdatierungen und morphotektonischer Analyse von Satellitendaten
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Der Tien Schan ist ein etwa E–W erstrecktes, rund 2500km langes und bis 250km breites Gebirge in Zentralasien. Einzelne Gipfel sind über 7000m hoch. Obwohl durch die Kollision Indiens mit Asien entstanden, ist der Tien ... -
Deformation mechanisms in the eastern Sudbury Igneous Complex, Canada: Evidence for meteorite impact into an active orogen
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The 1.85 Ga Sudbury Igneous Complex (SIC) in central Ontario is now widely considered to be the erosional remnant of a deformed paleo-horizontal impact melt sheet, about 2.5 km in thickness. Deformed impact melt breccias ...