Auflistung Geologie nach Titel
Anzeige der Dokumente 306-325 von 931
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Evaluation of transmissivity in a fractured aquifer—the Nyanzari wellfield, Burundi
(Grundwasser, 2021-12-08)Due to population growth, the city of Gitega in the central part of Burundi is lacking drinking water. Therefore, the national urban water supply company decided to expand the Nyanzari wellfield by drilling additional ... -
Evolution of Rift Systems and Their Fault Networks in Response to Surface Processes
; ; ; ; ; (Tectonics, 2022-02-24)
Continental rifting is responsible for the generation of major sedimentary basins, both during rift inception and during the formation of rifted continental margins. Geophysical and field studies revealed that rifts feature ... -
Evolution of the tRNALeu (UAA) Intron and Congruence of Genetic Markers in Lichen-Symbiotic Nostoc.
(PloS one, 2015)The group I intron interrupting the tRNALeu UAA gene (trnL) is present in most cyanobacterial genomes as well as in the plastids of many eukaryotic algae and all green plants. In lichen symbiotic Nostoc, the P6b stem-loop ... -
Evolution of the West Andean Escarpment at 18°S (N. Chile) during the last 25 Ma: uplift, erosion and collapse through time
; Uhlig, Dieter; Kohler, Ingrid; Seyfried, Hartmut (Tectonophysics, 2002)
The geological record of the Western Andean Escarpment (WARP) reveals episodes of uplift, erosion, volcanism and sedimentation. The lithological sequence at 18°S comprises a thick pile of Azapa Conglomerates (25–19 Ma), ... -
Evolution und Struktur des Oberrheingrabens - quantitative Einblicke mit Hilfe dreidimensionaler thermomechanischer Modellrechnungen
(Univ. Freiburg (Breisgau), 2006)In der Modellstudie wurde ein numerisches Modell für ein kontinentales Riftsystem erstellt, welches durch präexistierende Störungen sowohl entlang in seinem Streichen als auch quer dazu vorgeƯzeichnet war. Das Modell ... -
Excursion guide - Exkursionsführer zum 14. Symposium "Tektonik, Strukturgeologie, Kristallingeologie" (TSK 14)
(GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel und Institut für Geowissenschaften der Universität Kiel, 2012)Der Band liefert verschiedene Beiträge zur Geologie der Allertal-Salzstruktur und zur Tektonik und Metamorphose im Harz. -
Exhumation and uplift of the Sierras Pampeanas: preliminary implications from K–Ar fault gouge dating and low-T thermochronology in the Sierra de Comechingones (Argentina)
Löbens, Stefan; Bense, Frithjof;; ; Costa, Carlos; Layer, Paul; Siegesmund, Siegfried (International Journal of Earth Sciences, 2011)
The Sierras Pampeanas in central and north-western Argentina constitute a distinct morphotectonic feature between 27°S and 33°S. The last stage of uplift and deformation in this area are interpreted to be closely related ... -
Exhumation history and landscape evolution of the Sierra de San Luis (Sierras Pampeanas, Argentina) - new insights from low - temperature thermochronological data
Bense, Frithjof; Costa, Carlos; Oriolo, Sebastián; Löbens, Stefan; Dunkl, Istvan;; Siegesmund, Siegfried (Andean Geology, 2017)
This paper presents low-temperature thermochronological data and K‑Ar fault gouge ages from the Sierra de San Luis in the Eastern Sierras Pampeanas in order to constrain its low-temperature thermal evolution and ... -
Exhuming the Top End of North America: Episodic Evolution of the Eurekan Belt and Its Potential Relationships to North Atlantic Plate Tectonics and Arctic Climate Change
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We present the first low-temperature thermochronology data from northernmost Ellesmere Island (Canadian Arctic), along with palynological data from Paleogene sediments. Our study area is part of the >2,500-km-long Eurekan ... -
Exkursion 6: Trias und Jura von Göttingen und Umgebung
; Hoffmann, Veit E.; Seppelt, Stephan; Riegel, Walter (Universitätsverlag Göttingen2004-10)
Die Exkursion stellt repräsentative Aufschlüsse triassischer und jurassischer Sedimente aus der direkten Umgebung von Göttingen vor. Dabei werden deren stratigraphische Stellung, Ablagerungsmilieus und Fossilgemeinschaften ... -
Experimental Deformation of Opalinus Clay at Elevated Temperature and Pressure Conditions: Mechanical Properties and the Influence of Rock Fabric
; ; ; ; ; (Rock Mechanics and Rock Engineering, 2021-05-11)
The mechanical behavior of the sandy facies of Opalinus Clay (OPA) was investigated in 42 triaxial tests performed on dry samples at unconsolidated, undrained conditions at confining pressures (pc) of 50–100 MPa, temperatures ... -
Experimental Evaluation of Fluid Connectivity in Two‐Phase Flow in Porous Media During Drainage
; ; ; (Water Resources Research, 2022-11-04)
This study aims to experimentally investigate the possibility of combining two extended continuum theories for two‐phase flow. One of these theories considers interfacial area as a separate state variable, and the other ... -
Experimental Investigation on Static and Dynamic Bulk Moduli of Dry and Fluid-Saturated Porous Sandstones
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Knowledge of pressure-dependent static and dynamic moduli of porous reservoir rocks is of key importance for evaluating geological setting of a reservoir in geo-energy applications. We examined experimentally the evolution ... -
Experimental observations of aquifer storage and recovery in brackish aquifers using multiple partially penetrating wells
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Aquifer storage and recovery systems using multiple partially penetrating wells (MPPW-ASR) can form a viable solution to the problem of freshwater buoyancy when using brackish aquifers for freshwater storage. This study ... -
Experimental study and numerical modeling of the thermo-hydro-mechanical processes in soil freezing with different frost penetration directions
; ;; ; (Acta Geotechnica, 2021-04-28)
This research work presents an experimental and numerical study of the coupled thermo-hydro-mechanical (THM) processes that occur during soil freezing. With focusing on the artificial ground freezing (AGF) technology, a ... -
Exploring possible links between Quaternary aggradation in the Upper Rhine Graben and the glaciation history of northern Switzerland
; ; ; ; ; (International Journal of Earth Sciences, 2021-05-16)
The Quaternary filling of the Upper Rhine Graben is an excellent archive to reconstruct sediment dynamics in response to climate change, in particular related to past glaciations of the Swiss Alpine Foreland. Here, a ... -
Exploring the influence of operational parameters on the reactivity of elemental iron materials.
; Licha, T.; Scott, T. B.; Fall, M.; (Journal of hazardous materials, 2009-12-30)
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Extending Service Life of Household Water Filters by Mixing Metallic Iron with Sand
; Caré, Sabine; Togue-Kamga, Fulbert; Schöner, Angelika; Woafo, Paul (CLEAN - Soil, Air, Water, 2010)
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Extension Dynamics of the Northern Fonualei Rift and Spreading Center and the Southern Mangatolu Triple Junction in the Lau Basin at 16°S
; ; ; ; ; ; ; ; ; ; ; (Geochemistry, Geophysics, Geosystems, 2023-04-19)
Abstract Due to the complexity of 2D magnetic anomaly maps north of 18°S and the sparsity of ...
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Extreme (13)C depletion of carbonates formed during oxidation of biogenic methane in fractured granite.
(Nature communications, 2015)Precipitation of exceptionally 13C-depleted authigenic carbonate is a result of, and thus a tracer for, sulphate-dependent anaerobic methane oxidation, particularly in marine sediments. Although these carbonates typically ...
