A5004868799- Geological and Geochemical Analysis
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geological Studies and Exploration
- X-ray Spectroscopy and Fluorescence Analysis
- Geochemistry and Elemental Analysis
- Geological and Geophysical Studies
- Geological Formations and Processes Exploration
- Mineralogy and Gemology Studies
- Methane Hydrates and Related Phenomena
- Reservoir Engineering and Simulation Methods
- Geological formations and processes
- Electron and X-Ray Spectroscopy Techniques
- Building materials and conservation
- Geological and Geophysical Studies Worldwide
- Geomagnetism and Paleomagnetism Studies
- Clay minerals and soil interactions
- Polar Research and Ecology
- Microwave Dielectric Ceramics Synthesis
- Cultural Heritage Materials Analysis
- Biochemical and Molecular Research
Leibniz University Hannover
2013-2022
Max Planck Institute of Biophysics
1990-2013
University of Michigan
2006
University of California, Santa Barbara
2006
National Oceanography Centre
2006
University of Southampton
2006
Texas A&M University
2006
Shizuoka University
2006
Max Planck Society
2000-2002
Technische Universität Braunschweig
1984
Sampling an intact sequence of oceanic crust through lavas, dikes, and gabbros is necessary to advance the understanding formation evolution formed at mid-ocean ridges, but it has been elusive goal scientific ocean drilling for decades. Recent in eastern Pacific Ocean Hole 1256D reached gabbro within seismic layer 2, 1157 meters into a superfast spreading rate. The are crystallized melt lenses that beneath ridge. depth which was confirms predictions extrapolated from experiments modern...
This study presents improvements of internally heated pressure vessels to realize high-pressure experiments at controlled fO₂ in low-viscosity systems such as basaltic ones. The new design is a combination two experimental techniques: hydrogen sensor membrane made platinum measure fH₂, and therefore fO₂, rapid-quench system avoid crystallization melts during quench. setup has been tested successfully temperatures up 1250 °C pressures 500 MPa. Basaltic containing 9.38 wt% water can be...
In the Oman ophiolite crustal section, a contact zone between gabbro unit and volcanics diabase sheeted dikes, called root of dike complex, has been recently mapped at fine scale in selected area. The is derived from fast spreading ridge which had melt lens located main complex. With few exceptions accounted for, this horizon fairly constant thickness, ∼100 m, crude internal pseudo‐stratigraphy. At base are isotropic ophitic gabbros interpreted as thermal boundary layer. This layer...
The ODP/IODP multileg campaign at ODP Site 1256 (Cocos plate, eastern equatorial Pacific) provides the first continuous in situ sampling of fast spreading ocean crust from extrusive lavas, through sheeted dikes and down into uppermost gabbros. This paper focuses on a detailed petrographic microanalytical investigation gabbro section drilled during IODP Expedition 312. marked patchy spotty features that can be observed many Hole 1256D gabbros is mostly due to close association two different...
Fluorine plays an important role in magmatic and hydrothermal processes, but due to its low abundance geological samples determining F is difficult by electron probe microanalysis. By using a W‐Si multi‐layered pseudocrystal as the diffraction crystal instead of thallium acid phthalate ( TAP ), count rates were considerably higher, which however introduced spectral interferences between K α Fe L Mg β lines when normal integral mode applied. In this study, we developed protocol for measuring...
Research Article| April 01, 2015 Melts of sediments in the mantle wedge Oman ophiolite Karsten M. Haase; Haase 1GeoZentrum Nordbayern, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schlossgarten 5, 91054 Erlangen, Germany Search for other works by this author on: GSW Google Scholar Sarah Freund; Freund Jürgen Koepke; Koepke 2Institute Mineralogy, Leibniz Universität Hannover, Callinstrasse 3, 30167 Folkmar Hauff; Hauff 3GEOMAR Helmholtz Centre Ocean Kiel, Wischhofstrasse 1-3, 24148...
Abstract The combined Fe–Ti oxide geothermometry and oxygen barometry is an important tool in petrology volcanology. However, its appropriate application to natural magmatic systems still challenged by poorly constrained kinetics of the re-equilibration processes between magnetite, ilmenite, melt other phases. In this study, we experimentally investigated how fast oxides can re-equilibrate their compositions adapt changing temperature and/or redox conditions. A series equilibrium...