Auflistung Geologie nach Titel
Anzeige der Dokumente 670-689 von 931
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Pronounced increase in slope instability linked to global warming: A case study from the eastern European Alps
(Earth Surface Processes and Landforms, 2021-03-06)In recent decades, slope instability in high‐mountain regions has often been linked to increase in temperature and the associated permafrost degradation and/or the increase in frequency/intensity of rainstorm events. In ... -
Propagation, linkage, and interaction of caldera ring-faults: comparison between analogue experiments and caldera collapse at Miyakejima, Japan, in 2000
(Bulletin of VolcanologyBulletin of Volcanology, 2009)The formation of ring faults yields important implications for understanding the structural and dynamic evolution of collapse calderas and potentially associated ash-flow eruptions. Caldera collapse occurred in 2000 at ... -
Protomylonite evolution potentially revealed by the 3D depiction and fractal analysis of chemical data from a feldspar
(Contributions to Mineralogy and Petrology, 2014)An alkali feldspar megacryst from a protomylonite has been studied using laser ablation-ICP-mass spectrometry combined with cathodoluminescence imaging, Raman spectroscopy, and electron probe microanalysis. The aim was to ... -
Provenance and Weathering of Clays Delivered to the Bay of Bengal During the Middle Miocene: Linkages to Tectonics and Monsoonal Climate
(Paleoceanography and Paleoclimatology, 2021-02-24)Tectonics and regional monsoon strength control weathering and erosion regimes of the watersheds feeding into the Bay of Bengal, which are important contributors to global climate evolution via carbon cycle feedbacks. The ... -
Provenance of lower Palaeozoic metasediments of the East Odenwald (Mid-German-Crystalline Zone, Variscides)—a correlation with the East European Platform (Poland)
(International Journal of Earth Sciences, 2021-09-21)U–Pb age spectra of detrital zircons related to the East European Platform could be traced in paragneiss through the whole Mid-German-Crystalline Zone (Variscides, Central Europe) from the Odenwald via the Spessart to the ... -
Provenance of Pleistocene Rhine River Middle Terrace sands between the Swiss–German border and Cologne based on U–Pb detrital zircon ages
(International Journal of Earth Sciences, 2012) -
Provenance of the Bosnian Flysch
(Swiss Journal of Geosciences, 2008)Sandwiched between the Adriatic Carbonate Platform and the Dinaride Ophiolite Zone, the Bosnian Flysch forms a c. 3000 m thick, intensely folded stack of Upper Jurassic to Cretaceous mixed carbonate and siliciclastic ... -
Provenienzanalyse an paläozoischen Metasedimenten der Ostalpen mit Schwerpunkt in der Nördlichen Grauwackenzone - Petrographie, Glimmerchemie, 40Ar/39Ar-Datierungen
(Univ. Halle, 2006)Für die vorliegende Arbeit wurden aus dem alpinen Paläozoikum im Westabschnitt der Nördlichen Grauwackenzone schwachgradig metamorphe klastische Sedimentgesteine untersucht. Anhand der Sedimentpetrographie sowie der ... -
Proximate causes of deforestation in the Bolivian lowlands: an analysis of spatial dynamics
(Regional Environmental Change, 2011)Forests in lowland Bolivia suffer from severe deforestation caused by different types of agents and land use activities. We identify three major proximate causes of deforestation. The largest share of deforestation is ... -
Pumpversuche in der hydrogeologischen Praxis : Beispiele zu Durchführung und Auswertung.
(Pumpversuche in der hydrogeologischen Praxis : Beispiele zu Durchführung und Auswertung, 1999)Die Durchführung und Auswertung hydraulischer Pumversuche sind Standartaufgaben der Hydrogeologie bzw. Grundwasserhydraulik. Trotz des reichhaltigen Angebots an Fachschrifttum bestehen beim praktischen Einsatz, der ... -
Pure cross-anisotropy for geotechnical elastic potentials
(Acta Geotechnica, 2021-07-28)The pure cross-anisotropy is understood as a special scaling of strain (or stress). The scaled tensor is used as an argument in the elastic stiffness (or compliance). Such anisotropy can be overlaid on the top of any elastic ... -
Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements
(Environmental Earth Sciences, 2011)Owing to its long building history, different types of building stones comprised the construction of the Cologne Cathedral. Severe damage is observed on the different stones, e.g., sandstones, carbonate, and volcanic rocks, ... -
Quantification of Fracture Roughness by Change Probabilities and Hurst Exponents
(Mathematical Geosciences, 2021-12-17)The objective of the current study is to utilize an innovative method called “change probabilities” for describing fracture roughness. In order to detect and visualize anisotropy of rock joint surfaces, the roughness of ... -
Quantifying Tectonic and Glacial Controls on Topography in the Patagonian Andes (46.5°S) From Integrated Thermochronometry and Thermo‐Kinematic Modeling
(Journal of Geophysical Research: Earth Surface, 2021-07-28)The Patagonian Andes have been used to illustrate the dependency of major topographic changes in response to glacial erosion processes dominating over tectonic deformation and uplift. Here, we investigate tectonic and ... -
Quantitative 3D imaging of partially saturated granular materials under uniaxial compression
(Acta Geotechnica, 2021-08-23)Gauging the mechanical effect of partial saturation in granular materials is experimentally challenging due to the very low suctions resulting from large pores. To this end, a uniaxial (zero radial stress) compression test ... -
Quantitative Analysis of the Misorientation Distribution After the Recrystallisation of Tensile Deformed Copper Single Crystals
(Textures and microstructures, 1991)Recrystallisation experiments in tensile deformed <100>- and <111>-oriented single crystals of high purity copper yielded very accurate information about the orientations of recrystallised grains and deformation microstructure. ... -
Quantitative assessment of carbon sequestration reduction induced by disturbances in temperate Eurasian steppe
(Environmental Research Letters, 2017)The temperate Eurasian steppe (TES) is a region where various environmental, social, and economic stresses converge. Multiple types of disturbance exist widely across the landscape, and heavily influence carbon cycling ... -
Quantitative assessments of water-use efficiency in Temperate Eurasian Steppe along an aridity gradient.
(PloS one, 2017)Water-use efficiency (WUE), defined as the ratio of net primary productivity (NPP) to evapotranspiration (ET), is an important indicator to represent the trade-off pattern between vegetation productivity and water consumption. ... -
Quaternary tectonics and seismic stratigraphy of the western Black Sea shelf
(Univ. Hamburg, 2009)Interpretation of high and very high resolution reflection seismic data from the western Black Sea shelf yielded a seismic stratigraphic model of the Late Quaternary deposits on the southwestern Black Sea shelf. This model ... -
Quellen und Vorkommen kurzkettiger Alkylphenole (SCAP)
(Grundwasser, 2013)Aus der Literaturrecherche und eigenen Untersuchungen geht hervor, dass kurzkettige Alkylphenole (SCAP) während der Verarbeitungs- bzw. Veredelungsprozesse fester fossiler Brennstoffe ebenso in die Umwelt freigesetzt werden ...