Browsing 11. Symposium "Tektonik, Struktur- und Kristallingeologie" , 2006-03 by Issue Date
Now showing items 1-20 of 111
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Tertiäre Landoberflächen in Mitteldeutschland als Anzeiger tektonischer Bewegungen — Eine Rekonstruktion mittels Einsatz von Geo-Informationssystemen
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Aus der Verteilung und Lage tertiärer und quartärer Ablagerungen in Mitteleuropa lassen sich tertiäre Paläooberflächen rekonstruieren. Die spätere Verstellung dieser Oberflächen erlaubt es, die vertikalen Krustenbewegungen der ... -
Paläofluide in störungskontrollierten Bruchsystemen der Aachener Geothermie-Bohrung
(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 ... -
Strukturgeologische Studien als Beitrag zum Erfolg tiefengeothermischer Projekte
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Bei der tiefen Geothermie werden zur Schaffung eines künstlichen geothermischen Reservoirs unterirdische Wärmetauscher erzeugt. Zur Wärme- und Stromerzeugung wird dann wiederholt Wasser in den Untergrund verpresst, welches ... -
The fate of sandstone during impact cratering: shock compaction, cataclastic flow, and granular fluidization
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)
Impact of solid bodies is the most fundamental of all processes that have taken place on the terrestrial planets in our Solar system (Shoemaker 1977). On Earth, impact cratering was the dominant geologic process during the ... -
Very high anisotropies of the magnetic susceptibility in ductile shear zones: first quantitative results from a metamorphic nappe in the Central Scandinavian Caledonides, Sweden
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Shear zones in the Seve crystalline basement nappes of the central Scandinavian Caledonides contributed to exhumation and translation of these highgrade metamorphic rocks. The Seve unit is considered to represent the ... -
Deformation mechanisms in the eastern Sudbury Igneous Complex, Canada: Evidence for meteorite impact into an active orogen
Doman, Daniel;; Hofmann, Kai (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 ... -
Fluidtransport entlang von Störungen und Klüften im Gebiet des Hengill-Vulkans, SW-Island
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Das Holozäne Hengill-Vulkansystem liegt in der aktiven Westvulkanischen Zone in Südwestisland. Es beinhaltet den Hengill-Zentralvulkan, der sich südlich des Sees Thingvallavatn befindet, und ist eines der aktivsten ... -
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 ... -
Deformation der karbonatischen Espanola-Formation im zentralen Teil der Sudbury-Impaktstruktur, Kanada
Steffes, Elisabeth;; Doman, Daniel (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)
Archaische Granitoide und paläoproterozoische Metasedimente der Huronian Supergroup werden von dem schüsselförmigen und partiell erodierten 1.85 Ga alten Impaktschmelzkomplex der Sudbury-Impaktstruktur überlagert. Huronische ... -
Eo-Alpine imbrication of Middle Austroalpine units in the Gurktal Alps, Carinthia — questioning the existence of the Upper Austroalpine Murau Nappe
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Structural analysis of Paleozoic Middle and Upper Austroalpine (MAA, UAA) units of the Gurktal Nappe Complex (GNC) in combination with electron microprobe analyses of multiphase garnets reveal a complex Variscan and ... -
Electromagnetic radiation (EMR) and its interpretation in terms of stresses in the lithosphere
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Electromagnetic radiation (EMR) as measured at the surface of the lithosphere or underground shows preferred orientations, which can be related to microcracks and other brittle structures at micro and nano scales (see Bahat ... -
Feldspar deformation in greenschist facies shear zones (Aar-Massif, Switzerland)
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Granitic gneisses of the Central Aar Granite host a shear zone network that formed at greenschist facies conditions. The work area is located in the Bächlital (Grimsel area, Central Switzerland) and was chosen for the analysis ... -
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 ... -
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 ... -
Komplexe Verformung von Metaquarziten im Umfeld kleinräumiger Granitintrusionen — Ergebnisse einer Vorstudie im Paläoproterozoikum der Västervik Region (SE-Schweden)
Vollbrecht, Axel;; Thust, Anja (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)
Das Untersuchungsgebiet liegt im Übergangsbereich zwischen den Svekofenniden und der Transskandinavischen Magmatischen Zone, welcher als Teil einer Paläoproterozoischen E- bis NE-abtauchenden Subduktionszone interpretiert ... -
Gypsum veins as hydrofractures in layered and faulted mudstones: implications for reservoir permeability
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Mineral veins form when water solutions passing through fluid-transporting fractures gradually seal the fractures as minerals precipitate. Many mineral veins are hydrofractures, that is, fractures generated at least partly ... -
Structural investigations of the W termination of the ‘Schneeberg Zug’ — Austroalpine Unit, Southern Tyrol: Results from a crustal scale shear zone
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The Austroalpine microplate traces the Alpine collision event between the Africa-related southern Alpine realm and the European continent. The southern margin of this microplate, the basement to the north of Meran ... -
Geotechnical characterization of trench- and slope sediments off Southern Chile: preliminary results
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)To understand seismogenesis in shallow parts of subduction zones, it is vital to know about strength and frictional parameters of subducted sediment. For this purpose, PETROTEC, as part of the TIPTEQ-Project, gathers geotechnical ... -
Fracturing and vein formation in the middle crust - a record of co-seismic loading and post-seismic stress relaxation
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)Metamorphic rocks approaching the crustal scale brittle-ductile transition (BDT) during exhumation are expected to become increasingly affected by short term stress fluctuations related to seismic activity in the overlying ... -
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 ...