Search Results - "Warr, Laurence N"

The rate and mechanism of deep-sea glauconite formation at the Ivory Coast-Ghana marginal ridge by Baldermann, Andre, Warr, Laurence N, Grathoff, Georg H, Dietzel, Martin

“…The environmental conditions and reaction paths of shallow-water glauconititization (<500 m water depth, ∼ 15 °C) close to the sediment-seawater interface are…”
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Synthesis of Hydroxy-Sodalite/Cancrinite Zeolites from Calcite-Bearing Kaolin for the Removal of Heavy Metal Ions in Aqueous Media by Muayad Esaifan, Laurence N. Warr, Georg Grathoff, Tammo Meyer, Maria-Theresia Schafmeister, Angela Kruth, Holger Testrich

“…A hydroxy-sodalite/cancrinite zeolite composite was synthesized from low-grade calcite-bearing kaolin by hydrothermal alkali-activation method at 160 °C for 6…”
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Thermally Induced Bentonite Alterations in the SKB ABM5 Hot Bentonite Experiment by Ritwick Sudheer Kumar, Carolin Podlech, Georg Grathoff, Laurence N. Warr, Daniel Svensson

“…Pilot sites are currently used to test the performance of bentonite barriers for sealing high-level radioactive waste repositories, but the degree of mineral…”
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In Situ Measurements of the Hydration Behavior of Compacted Milos (SD80) Bentonite by Wet-Cell X-ray Diffraction in an Opalinus Clay Pore Water and a Diluted Cap Rock Brine by Tobias Manzel, Carolin Podlech, Georg Grathoff, Stephan Kaufhold, Laurence N. Warr

“…Compacted bentonite is currently being considered as a suitable backfill material for sealing underground repositories for radioactive waste as part of a…”
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Bentonite Alteration in Batch Reactor Experiments with and without Organic Supplements: Implications for the Disposal of Radioactive Waste by Carolin Podlech, Nicole Matschiavelli, Markus Peltz, Sindy Kluge, Thuro Arnold, Andrea Cherkouk, Artur Meleshyn, Georg Grathoff, Laurence N. Warr

“…Bentonite is currently proposed as a potential backfill material for sealing high-level radioactive waste in underground repositories due to its low hydraulic…”
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Thousands of new and improved mineral symbols by Warr, Laurence N.

“…Letter to the Editor…”
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Structure modeling and quantitative X‐ray diffraction of C‐(A)‐S‐H by Mesecke, Karsten, Warr, Laurence N., Malorny, Winfried

“…Quantitative X‐ray diffraction of nanocrystalline calcium silicate hydrate (C‐S‐H) and its aluminium‐substituted variants (C‐A‐S‐H) has so far been limited by…”
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Constraints on mineralization, fluid‐rock interaction, and mass transfer during faulting at 2–3 km depth from the SAFOD drill hole by Schleicher, Anja M., Tourscher, Sara N., van der Pluijm, Ben A., Warr, Laurence N.

“…Mineralogical and geochemical changes in mudrock cuttings from two segments of the San Andreas Fault Observatory at Depth (SAFOD) drill hole (3066–3169 and…”
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Origin and significance of clay-coated fractures in mudrock fragments of the SAFOD borehole (Parkfield, California) by Schleicher, Anja M., van der Pluijm, Ben A., Solum, John G., Warr, Laurence N.

“…The clay mineralogy and texture of rock fragments from the SAFOD borehole at 3067 m and 3436 m measured depth (MD) was investigated by electron microscopy…”
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In situ monitoring of hydrothermal reactions by X‐ray diffraction with Bragg–Brentano geometry by Mesecke, Karsten, Malorny, Winfried, Warr, Laurence N.

“…This note describes an autoclave chamber developed and constructed by Anton Paar and its application for in situ experiments under hydrothermal conditions…”
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Episodic mineralization of hydrothermal illite in the Soultz-sous-Forêts granite (Upper Rhine Graben, France) by Schleicher, Anja M., Warr, Laurence N., Kober, Bernd, Laverret, Emmanuel, Clauer, Norbert

“…Episodic and localized illite mineralization is documented in the hydrothermally altered Soultz-sous-Forets granite (Upper Rhine Graben, France). Separated…”
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The influence of alkali activator type, curing temperature and gibbsite on the geopolymerization of an interstratified illite-smectite rich clay from Friedland by Hu, Nanjie, Bernsmeier, Denis, Grathoff, Georg H., Warr, Laurence N.

“…Illitic clays, such as the interstratified illite-smectite clays, are one of the most abundant aluminosilicates on Earth's surface and are widely available for…”
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The Year-Long Development of Microorganisms in Uncompacted Bavarian Bentonite Slurries at 30 and 60 °C by Matschiavelli, Nicole, Kluge, Sindy, Podlech, Carolin, Standhaft, Daniel, Grathoff, Georg, Ikeda-Ohno, Atsushi, Warr, Laurence N, Chukharkina, Alexandra, Arnold, Thuro, Cherkouk, Andrea

“…In the multibarrier concept for the deep geological disposal of high-level radioactive waste (HLW), bentonite is proposed as a potential barrier and buffer…”
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The importance of specific surface area in the geopolymerization of heated illitic clay by Dietel, Jan, Warr, Laurence N., Bertmer, Marko, Steudel, Annett, Grathoff, Georg H., Emmerich, Katja

“…Geopolymers are inorganic binders formed by adding alkaline (hydroxide) solution to silicates such as blast furnace slag, fly ash or calcined clay to dissolve…”
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A FIB-SEM Study of Illite Morphology in Aeolian Rotliegend Sandstones: Implications for Understanding the Petrophysical Properties of Reservoir Rocks by Peltz, Markus, Jacob, Arne, Grathoff, Georg H., Enzmann, Frieder, Kersten, Michael, Warr, Laurence N.

“…Diagenetic illite growth in porous sandstones leads to significant modifications of the initial pore system which result in tight reservoirs. Understanding and…”
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Environmental controls and reaction pathways of coupled de-dolomitization and thaumasite formation by Mittermayr, Florian, Baldermann, Andre, Baldermann, Claudia, Grathoff, Georg H., Klammer, Dietmar, Köhler, Stephan J., Leis, Albrecht, Warr, Laurence N., Dietzel, Martin

“…Deteriorated concrete and interstitial solutions (IS) were collected from Austrian tunnels to elucidate potential connections between de-dolomitization caused…”
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Influence of phyllosilicate mineral assemblages, fabrics, and fluids on the behavior of the Punchbowl fault, southern California by Solum, John G., van der Pluijm, Ben A., Peacor, Donald R., Warr, Laurence N.

“…The Punchbowl fault is an ancient segment of the San Andreas System that was active between 1 and 4 Ma and exhumed from a depth of 2–4 km, thereby providing…”
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Simulating permeability reduction by clay mineral nanopores in a tight sandstone by combining computer X-ray microtomography and focussed ion beam scanning electron microscopy imaging by Jacob, Arne, Peltz, Markus, Hale, Sina, Enzmann, Frieder, Moravcova, Olga, Warr, Laurence N, Grathoff, Georg, Blum, Philipp, Kersten, Michael

“…Computer X-ray microtomography (µXCT) represents a powerful tool for investigating the physical properties of porous rocks. While calculated porosities…”
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Hydrothermal alteration of clay and low pH concrete applicable to deep borehole disposal of high-level radioactive waste – A pilot study by Mohammed, Mohammed Hatem, Pusch, Roland, Knutsson, Sven, Warr, Laurence N.

“…•Dense clay and new concrete effectively isolate high-level radwaste in deep holes.•Low-ph concrete with ideal packing gives high strength and low hydraulic…”
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Nontronite-enhanced biodegradation of Deepwater Horizon crude oil by Alcanivorax borkumensis by Warr, Laurence N., Schlüter, Maria, Schauer, Frieder, Olson, Gregory M., Basirico, Laura M., Portier, Ralph J.

“…Laboratory experiments demonstrate that adding clay to crude oil pollution generally has a positive effect on the bacterial degradation of hydrocarbons,…”
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