A5033279586- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- Clay minerals and soil interactions
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Planetary Science and Exploration
- Radioactive element chemistry and processing
- Heavy metals in environment
- Iron oxide chemistry and applications
- Groundwater and Isotope Geochemistry
- Geological Studies and Exploration
- Geomagnetism and Paleomagnetism Studies
- Marine and environmental studies
- Water Quality and Pollution Assessment
- Geological and Geophysical Studies Worldwide
- earthquake and tectonic studies
- Mercury impact and mitigation studies
- Geological and Geophysical Studies
- Geological formations and processes
- Astro and Planetary Science
- Mineralogy and Gemology Studies
- Soil and Unsaturated Flow
- Methane Hydrates and Related Phenomena
Tokyo University of Marine Science and Technology
2016-2024
Ifremer
2013-2021
Fonctionnement écologique et gestion durable des agrosystèmes bananiers et ananas
2015
United States Marine Corps
2015
Sofia University "St. Kliment Ohridski"
2004-2013
Kiel University
2006
University of Antwerp
1998-2000
Schmidt Institute of Physics of the Earth
1994
Near-infrared remote sensing data of Mars have revealed thousands ancient deposits Fe/Mg-rich smectitic clay minerals within the crust with relevance to past habitability. Diagnostic metal–OH infrared spectroscopic absorptions used interpret mineralogy these phyllosilicates occur at wavelengths 2.27–2.32 μm, indicating variable Fe/Mg ratios in structures. The objective this work is use near constrain smectites on Mars. Using seafloor as mineralogical and analogs for Martian minerals, we show...
Research Article| December 01, 2014 The Anatomy of a Buried Submarine Hydrothermal System, Clark Volcano, Kermadec Arc, New Zealand C.E.J. de Ronde; Ronde † 1GNS Science, 1 Fairway Drive, Avalon, PO Box 30-368, Lower Hutt 6315, †Corresponding author: e-mail, Cornel.deRonde@gns.cri.nz Search for other works by this author on: GSW Google Scholar S.L. Walker; Walker 2Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, 7600 Sand Point Way NE, Seattle,...
Clay samples of hydrothermal origin from several oceanic spreading centers were studied using XRD, microprobe, infrared, and thermal analysis. They are talc, smectite, mixed-layer talc-smectite (T-S) where the talc layers have degrees crystalline order. The smectite is trioctahedral in most cases, but there also dioctahedral both as a separate phase. All specimens contain Fe3+, some them moderate amounts (up to 17% Fe2O3) distributed between tetrahedral octahedral sheets (maximum values:...
With the arrival of Curiosity on Mars, MSL has started its ground validation some phyllosilicate characterization carried out with remote sensing near-IR spectroscopy from orbital instruments. However, given limited range action rover, identification and will have to rely mainly data. Investigation Earth analogs can greatly assist interpretation martian spectra enable more robust analyses. In this contribution, Mg/Fe-rich clays submarine hydrothermal origin that had been thoroughly...