Auflistung Geologie nach Titel
Anzeige der Dokumente 683-702 von 933
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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 ... -
Ramgarh, Rajasthan, India: A 10 km diameter complex impact structure
(Meteoritics & Planetary Science, 2020)The Ramgarh structure is a morphological landmark in southeastern Rajasthan, India. Its 200 m high and 3.5–4 km wide annular collar has provoked many hypotheses regarding its origin, including impact. Here, we document ... -
Rapid eclogitisation of the Dabie–Sulu UHP terrane: Constraints from Lu–Hf garnet geochronology
(Earth and Planetary Science Letters, 2008)Rapid eclogitisation of the Dabie–Sulu UHP terrane: Constraints from Lu–Hfgarnet geochronologyAlexander Schmidta,⁎, Stefan Weyera, Klaus Mezgerb, Erik E. Schererb, Yilin Xiaoc,d,Jochen Hoefsd, Gerhard P. BreyaaInstitut für ... -
Rare Holocene sediment deposits from Sodmein Playa (Eastern Desert, Egypt)—Stratigraphic assessment and environmental setting
(Geoarchaeology, 2022-11-12)Sodmein Playa is one of the rare Pleistocene open‐air sites in the Eastern Desert of Egypt. Based on the associated stone artefact material, it could be assigned to the Middle Stone Age/Last Interglacial. However, it has ... -
Rates of rockwall slope erosion in the upper Bhagirathi catchment, Garhwal Himalaya
(Earth Surface Processes and Landforms, 2019)Rockwall slope erosion is defined for the upper Bhagirathi catchment using cosmogenic Beryllium-10 (10Be) concentrations in sediment from medial moraines on Gangotri glacier. Beryllium-10 concentrations range from 1.1 ± ... -
Raumordnungspolitik als Verdichtung politischer Kräfteverhältnisse
(s u b \ u r b a n . zeitschrift für kritische stadtforschung, 2017)Am Beispiel der Raumordnungspolitik der Bundesrepublik Deutschland der 1970er-Jahre wird im Beitrag mithilfe der historisch-materialistischen Politikanalyse die politische Verdichtung der Kräfteverhältnisse bezüglich ... -
Räumliche ingenieurgeologische Modellierung im Stadtgebiet von Göttingen
(2008)In städtischen Räumen erhobene geologische, hydrogeologische und ingenieurgeologische Punkt- und Flächendaten werden meist dezentral verwaltet. Erst durch das Überführen der unterschiedlichen Punkt- und Flächendaten in ein ... -
Reassessing evidence of Moon–Earth dynamics from tidal bundles at 3.2 Ga (Moodies Group, Barberton Greenstone Belt, South Africa)
(Sedimentology, 2022-04-05)Past orbital parameters of the Moon are difficult to reconstruct from geological records because relevant data sets of tidal strata are scarce or incomplete. The sole Archean data point is from the Moodies Group (ca 3.22 Ga) ... -
Recent advances in the study of Arctic submarine permafrost
(Permafrost and Periglacial Processes, 2020)Submarine permafrost is perennially cryotic earth material that lies offshore. Most submarine permafrost is relict terrestrial permafrost beneath the Arctic shelf seas, was inundated after the last glaciation, and has been ... -
Recent developments in neutron imaging with applications for porous media research
(Solid Earth, 2016)Computed tomography has become a routine method for probing processes in porous media, and the use of neutron imaging is especially suited to the study of the dynamics of hydrogenous fluids, and of fluids in a ... -
Reconstructing Depositional Rates and Their Effect on Paleoenvironmental Proxies: The Case of the Lau Carbon Isotope Excursion in Gotland, Sweden
(Paleoceanography and Paleoclimatology, 2020-12-19)Variations in depositional rates affect the temporal depositional resolutions of proxies used for paleoenvironmental reconstructions; for example, condensation can make reconstructed environmental changes appear very abrupt. ... -
Redetermination and invariom refinement of 1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-4-ium-1-yl)-1,4-dihydroquinoline-3-carboxylate hexahydrate at 120 K
(Acta Crystallographica Section E Structure Reports Online, 2008)The structure of the title compound, C17H18FN3O3 6H2O, has been redetermined at 120 K. An invariom refinement, a structural refinement using aspherical scattering factors from theoretically predicted multipole population ...