Search Results - "Géraud, Y"

Porosity and Compaction State at the Active Pāpaku Thrust Fault in the Frontal Accretionary Wedge of the North Hikurangi Margin by Jade Dutilleul, S. Bourlange, Y. Géraud

“…Abstract Characterization of the porosity evolution across the sedimentary section entering subduction zones and accreted sediments provide valuable…”
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Induced polarization of volcanic rocks – 6: relationships with other petrophysical properties by Zhang, K, Chibati, N, Revil, A, Richard, J, Gresse, M, Xue, Y, Géraud, Y

“…SUMMARY The petrophysical properties of 41 volcanic samples from La Soufrière volcanoe (Guadeloupe Island, Eastern Caribbean, France) are investigated. We…”
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Induced polarization images alteration in stratovolcanoes by Revil, A., Qi, Y., Panwar, N., Gresse, M., Grandis, H., Sharma, R., Géraud, Y., Chibati, N., Ghorbani, A.

“…We investigate the complex conductivity of 32 volcanic rock samples from two stratovolcanoes, La Soufrière Volcano (Guadeloupe Island, Caribbean) and…”
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Characterization of an exhumed high-temperature hydrothermal system and its application for deep geothermal exploration: An example from Terre-de-Haut Island (Guadeloupe archipelago, Lesser Antilles volcanic arc) by Favier, A., Lardeaux, J.-M., Corsini, M., Verati, C., Navelot, V., Géraud, Y., Diraison, M., Ventalon, S., Voitus, E.

“…We present integrated structural, petrological, mineralogical and geochemical investigations conducted on an exhumed hydrothermal system identified in…”
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Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda; implications for fluid transfer and storage by Walter, Bastien, Géraud, Y, Bartier, D, Kluska, J. M, Diraison, M, Morlot, C, Raisson, F

“…The effects of weathering on the mineralogical and petrophysical properties of the western Uganda Archaean crystalline basement were investigated using outcrop…”
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Structural control of weathering processes within exhumed granitoids: Compartmentalisation of geophysical properties by faults and fractures by Place, J., Géraud, Y., Diraison, M., Herquel, G., Edel, J.-B., Bano, M., Le Garzic, E., Walter, B.

“…In the latter stages of exhumation processes, rocks undergo weathering. Weathering halos have been described in the vicinity of structures such as faults,…”
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On the Use of Aeromagnetism for Geological Interpretation: 1. Comparison of Scalar and Vector Magnetometers for Aeromagnetic Surveys and an Equivalent Source Interpolator for Combining, Gridding, and Transforming Fixed Altitude and Draping Data Sets by Gavazzi, B., Bertrand, L., Munschy, M., Mercier de Lépinay, J., Diraison, M., Géraud, Y.

“…Airborne magnetic surveys are common in geosciences. High‐precision surveys are usually performed at a low altitude, draping the topography, using scalar…”
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On the Use of Aeromagnetism for Geological Interpretation: 2. A Case Study on Structural and Lithological Features in the Northern Vosges by Bertrand, L., Gavazzi, B., Mercier de Lépinay, J., Diraison, M., Géraud, Y., Munschy, M.

“…In many grabens of the West European Rift System, several drilling projects are targeting fluid conductive faults to produce electricity with geothermal…”
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Indirect estimation of the clay content of clay-rocks using acoustic measurements: New insights from the Montiers-sur-Saulx deep borehole (Meuse, France) by Cosenza, P., Robinet, J.C., Prêt, D., Huret, E., Fleury, M., Géraud, Y., Lebon, P., Villiéras, F., Zamora, M.

“…This work benefited from a comprehensive set of logging and mineralogical data that was acquired from the 2-km-deep EST433 borehole of Montiers-sur-Saulx…”
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The thickness of faults: From laboratory experiments to field scale observations by Chambon, G., Schmittbuhl, J., Corfdir, A., Orellana, N., Diraison, M., Géraud, Y.

“…To assess the role of the fault thickness on its mechanical behavior, we first present the results of an experimental modeling of a thick fault core. Our…”
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Induced Polarization Images the Plumbing System of Hydrothermal Vents in an Intracontinental Rift, Lake Abhé, Republic of Djibouti by Piolat, L., Geraud, Y., Revil, A.

“…Recent developments in induced polarization allow for the characterization of alteration halos within hydrothermal systems. We explore the possibility of using…”
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Microstructural evolution of granitic stones exposed to different thermal regimes analysed by infrared thermography by Junique, T., Vázquez, P., Géraud, Y., Thomachot-Schneider, C., Sidibé, H.

“…Detailed knowledge of the behaviour of rocks under thermal stress is essential in a variety of fields such as the exploitation of oil and mineral resources,…”
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Elemental Chemical Analysis by X-ray Fluorescence of Calcarenite Stones Used in Historical Monuments Building of Rabat (Morocco) by El Rhaffari, Y., Hraita, M., Rahmouni, A., Samaouali, A., Boukalouch, M., Geraud, Y.

“…A good knowledge of chemical properties, thermophysical and petrophysical parameters, makes it possible to understand the mechanisms of alteration of…”
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Porosity and thermal conductivity of the Soultz-sous-Forêts granite by SURMA, Fabrice, GERAUD, Yves

“…— The success of the Soultz-sous-Forêts Hot-Dry-Rock project depends on the ability to maintain fluid circulation in a fractured granite. Fractures represent…”
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Elemental Chemical Analysis by X-ray Fluorescence of Calcarenite Stones Used in Historical Monuments Building of Rabat (Morocco) by El Rhaffari, Y., Hraita, M., Rahmouni, A., Samaouali, A., Boukalouch, M., Geraud, Y.

“…A good knowledge of chemical properties, thermophysical and petrophysical parameters, makes it possible to understand the mechanisms of alteration of…”
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Granite microporosity changes due to fracturing and alteration: secondary mineral phases as proxies for porosity and permeability estimation by Stanek, Martin, Geraud, Yves

“…Several alteration facies of fractured Lipnice granite are studied in detail on borehole samples by means of mercury intrusion porosimetry, polarized and…”
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Sorption kinetic of water vapour of MX80 bentonite submitted to different physical–chemical and mechanical conditions by Montes-H, G, Geraud, Y

“…The clay materials are widely used in industrial processes. One significant application is as a solid desiccant agent or as a dehydrator of gases. In this…”
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Influence of interlayer cations on the water sorption and swelling–shrinkage of MX80 bentonite by Montes-H, G, Duplay, J, Martinez, L, Geraud, Y, Rousset-Tournier, B

“…The potential of water sorption and swelling–shrinkage in the expansive clays is practically defined by the nature of interlayer cations. The purpose of this…”
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Experimental and theoretical deformation of ice–rock mixtures: Implications on rheology and ice content of Martian permafrost by Mangold, N., Allemand, P., Duval, P., Geraud, Y., Thomas, P.

“…The distribution and amount of ground ice on Mars is an important issue for the future exploration of this planet. The presence of ground ice is demonstrated…”
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Several textural properties of compacted and cation-exchanged bentonite by Montes-Hernandez, G., Duplay, J., Géraud, Y., Martinez, L.

“…One of the principal applications for bentonite is in drilling muds. Moreover it is widely used as a suspending and stabilizing agent, and as an adsorbent or…”
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