Inst. Angewandte Geowissenschaften

102 Items

Recent Submissions
Water resources management in the Atacama Desert

Scheihing, Konstantin W. (2018)

Different stakeholders depend on the depleting groundwater resources in the Atacama Desert of northern Chile. Endeavors in water resources management encounter the arduous task of balancing the often-opposing poles of societal, economic, political and environmental interests. Finding – at best – sustainable solutions to modern challenges is aggravated by a lack of understanding of hydrological ...

Development of numerical methods and approaches to simulate colloid transport and stream-aquifer interaction in heterogeneous natural soils

Zhou, Dan (2018)

Groundwater recharge and contamination are important aspects of groundwater resource management. Groundwater systems are typically constrained by the availability of field observations. Therefore, mathematical models are developed by hydrologists and hydrogeologists to provide a reliable description of the groundwater system for quantitative analysis and uncertainty forecast. However, many curr...

Roles of organic-inorganic interactions in the generation of petroleum as exemplified by Lower Palaeozoic petroleum systems, Europe

Yang, Shengyu (2017)

The clay-rich Lower Carboniferous Bowland Shale (England) and the uranium-rich Cambro-Ordovician Alum Shale (Northern Europe), both deposited in marine environments, are characterized by dominating gaseous and aromatic compounds in pyrolysates. Therefore, the kerogens in both of these shales can be classified as type III from classical perspectives, which is not consistent with the depositional...

The effect of tetrahedral boron in tourmaline on the boron isotope fractionation between tourmaline and fluid

Kutzschbach, Martin (2017)

Tourmaline is the most abundant borosilicate in the Earth’s crust and the ratio of its two B isotopes (¹¹B/¹⁰B) helps to unravel the source and evolution of fluids during metamorphic, magmatic and hydrothermal processes. For example, tourmaline is a common accessory mineral in the metasedimentary Pfitsch Formation located in the Pfitscher Joch area in the western TauernWindow (Alps). Here, tour...

Biogeochemical process studies on oil sand tailings used for land reclamation in Alberta, Canada

Noah, Mareike (2017)

The Canadian oil sand region, located in the northern part of the province Alberta, holds the third largest oil reserves in the world with an estimated volume of 173 billion barrels of heavily biodegraded petroleum. Surface mining of oil sand deposits which are situated in low depth, has a huge impact on the surrounding environment due to the removement of vegetation, surface soils, and subsurf...

Organic-inorganic interactions in siliciclastic oil reservoirs, North Sea

Mu, Nana (2017)

Sandstones are important reservoir rocks for a variety of fluids. Their properties, such as porosity and permeability, which are crucial factors for petroleum production, primarily depend on depositional environments. Additionally, subsequent geochemical alterations by depth-related reactions (“classic diagenesis”), organic-inorganic interactions, and mixing of basin fluids can also significant...

Oil retention and migration in the Barnett, Posidonia, and Niobrara shales

Han, Yuanjia (2017)

Given the current shale oil boom in U.S., the primary objective of this dissertation is to clarify the factors controlling retention and migration of oil in selected shale ”plays”. With reference to three TypeII marine shales namely the Barnett, Posidonia and Niobrara Shales, a suite of 694 samples ranging in age from Mississippian to Campanian, varying in maturity from immature to overmature, ...

Transport and attenuation of particulate matter together with organic micropollutants within karst aquifers

Schiperski, Ferry (2017)

Karst aquifers are intensively used for drinking water production around the world. In some European countries karst water contributes to about 50% of the drinking water supply. In contrast to porous aquifers, particulate matter like clay particles or bacteria is transported over long distances in these aquifers, which results in three main problems and questions related to the transport of...

Sedimentology and diagenesis of lower and upper carboniferous sediments in the North German Basin

Kerschke, Dorit Ines (2016)

158 samples from core material of thirteen former oil and gas exploration wells provided by the Federal Geological Surveys of Brandenburg (LBGR), Mecklenburg-Vorpommern (LUNG), Sachsen-Anhalt (LABG), Nordrhein-Westfalen (GD-NRW), and the Netherlands Organization for Applied Scientific Research (TNO). Additional samples were taken in outcrops along the northern margin of the Rhenish Slate Mounta...

Sedimentology and diagenesis of lower and upper carboniferous sediments in the North German Basin

Kerschke, Dorit Ines (2016)

Carboniferous organic-rich mudrocks are proven source rocks for conventional gas systems in Northwestern Europe and have sourced most of the gas found in the Rotliegend sandstones (di Primio et al., 2008). They are therefore considered as one of the stratigraphic horizons in the North German Basin that potentially could host unconventional gas occurrences. Recent gas-in-place (GIP) estimates of...

Geological mapping of Eastern Syria by using remote sensing and GIS

Alibrahim, Mohammad Ali (2016)

Syria is located in the north of the Arabian Peninsula and is one of the Middle East countries that are rich with natural resources (water, oil, gas and vegetation). This study deals with this issue by applying remote sensing and GIS to build up a geodatabase, and subsequently, geological investigation, geological mapping, and an evaluation of the Euphrates water, and aims to give suitable sugg...

Dissolution behaviour of beryl

Kurumathoor Parameshwaran, Raji (2016)

Beryl, a cyclosilicate, with an ideal chemical composition Be3Al2Si6O18, is the most important accessory Be mineral and an ore of the strategic element Be. It is mainly found in pegmatites, in some highly evolved granites and in some metamorphic rocks. In many cases, the beryl forming process extends over a wide range of P-T-X conditions. This process represents the major range of pegmatitic fo...

Geological 3-D model as 3-D PDF and mve files

Ziesch, Jennifer (2016)

The 3-D PDF shows the 3-D model, including all interpreted stratigraphic horizons and faults as triangulated surfaces. To activate the 3-D PDF, the user has to click once in the black background and wait. After a few seconds it should be possible to get a 360° view around the 3-D model and to toggle horizons/faults/wells on and off. In a standard PDF viewer it is possible to create custom 2-D s...

Prediction of seismic and sub-seismic deformation to ensure carbon traps in the Otway Basin, Australia

Ziesch, Jennifer (2016)

In the framework of CO2 capture and storage (CCS), it is important to determine fluid migration pathways that occur between reservoir and surface, because this allows an estimation of the long-term storage integrity. This cumulative thesis deals with this topic and is embedded in the PROTECT (PRediction Of deformation To Ensure Carbon Traps) project. The project cooperates with Australia’s firs...

Tourmaline as a petrogenetic indicator mineral

Berryman, Eleanor (2016)

The crystal chemistry of tourmaline’s X site is explored using a combination of synthesis experiments, structural characterization, and an investigation of natural tourmalines. The synthesis experiments were done in the range 0.2–4.0 GPa and 500–700 degree Celsius in the system MgO–Al2O3–B2O3–SiO2–H2O±KCl±NaCl±CaCl2 using an oxide mixture and excess fluid. The experimental findings show that K,...

Structure of the catalytic sites in Fe/N/C-catalysts for O-2-reduction in PEM fuel cells

Kramm, Ulrike I. ; Herranz, Juan ; Larouche, Nicholas ; Arruda, Thomas M. ; Lefèvre, Michel ; Jaouen, Frédéric ; Bogdanoff, Peter ; Fiechter, Sebastian ; Abs-Wurmbach, Irmgard ; Mukerjee, Sanjeev ; Dodelet, Jean-Pol (2012)

Fe-based catalytic sites for the reduction of oxygen in acidic medium have been identified by 57Fe Mössbauer spectroscopy of Fe/N/C catalysts containing 0.03 to 1.55 wt% Fe, which were prepared by impregnation of iron acetate on carbon black followed by heat-treatment in NH3 at 950 °C. Four different Fe-species were detected at all iron concentrations: three doublets assigned to molecular FeN4-...

The crustal structure and evolution of the South Atlantic

Becker, Katharina (2016)

This thesis presents a study of the southern South Atlantic based on a marine geophysical data set containing new reflection and refraction seismic sections between 32° and 50°. The integration of seismic, gravimetric, and magnetic data provides methods to study the crustal structure, and magmatic and tectonic features of the South Atlantic. Gravimetric and tectonic modelling complement the res...

Saltwater detection and monitoring using metal cased boreholes as long electrodes

Ronczka, Mathias (2016)

Contaminations of freshwater aquifers by saltwater are a well-known problem in coastal regions, as well as on inland sites. They can be detected by electrical resistivity tomography (ERT) as recent widespread investigations show. The three-dimensional application is limited to small scales due to the enormous effort required by field surveys. This thesis presents an approach that uses the metal...

Wadi Bili catchment in the Eastern Desert

Hadidi, Ahmed (2016)

Rainfalls in the Eastern Desert of Egypt are rare, but in some cases they are intensive and cause flash floods. These flash floods can have devastating effects, but in the deserts this might be a treasured resource for fresh water. The very high potential evaporation rate in the Eastern Desert entails artificial groundwater recharge to be the best solution to store huge amounts of water. In ord...

Economics modeling for petroleum exploration and production projects considering risk and imprecise data

Shereih, Kenanah (2016)

The economic structure of the petroleum industry differs strongly from other industries due to great risks and uncertainty associated with oil and gas projects, coupled with dangerously volatile price levels. In addition, the number of uncertainties in the data utilized in decision making to invest in petroleum projects is very high, and therefore strongly affects the decision making processes....