Search Results - "AGARD, P."

The subduction plate interface: rock record and mechanical coupling (from long to short timescales) by Agard, P., Plunder, A., Angiboust, S., Bonnet, G., Ruh, J.

“…Short- and long-term processes at or close to the subduction plate interface (e.g.,mineral transformations, fluid release, seismicity and more generally…”
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Exhumation of oceanic blueschists and eclogites in subduction zones: Timing and mechanisms by Agard, P., Yamato, P., Jolivet, L., Burov, E.

“…High-pressure low-temperature (HP–LT) metamorphic rocks provide invaluable constraints on the evolution of convergent zones. Based on a worldwide compilation…”
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Initial water budget: The key to detaching large volumes of eclogitized oceanic crust along the subduction channel? by Angiboust, S., Agard, P.

“…We herein investigate the extent to which extensive hydration of the oceanic lithosphere influences the preservation and exhumation of large-scale ophiolite…”
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Plate interface rheological switches during subduction infancy: Control on slab penetration and metamorphic sole formation by Agard, P., Yamato, P., Soret, M., Prigent, C., Guillot, S., Plunder, A., Dubacq, B., Chauvet, A., Monié, P.

“…Subduction infancy corresponds to the first few million years following subduction initiation, when slabs start their descent into the mantle. It coincides…”
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Convergence history across Zagros (Iran): constraints from collisional and earlier deformation by Agard, P., Omrani, J., Jolivet, L., Mouthereau, F.

“…The Zagros orogen provides a unique opportunity within the Alpine system to evaluate the interplay between a young Tertiary collision and earlier…”
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Slabitization: Mechanisms controlling subduction development and viscous coupling by Agard, P., Prigent, C., Soret, M., Dubacq, B., Guillot, S., Deldicque, D.

“…This contribution investigates mechanisms controlling subduction development and stabilization over time (coined as 'slabitization'), from a nascent slab to a…”
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Mantle Wedge (De)formation During Subduction Infancy: Evidence from the Base of the Semail Ophiolitic Mantle by Prigent, C, Agard, P, Guillot, S, Godard, M, Dubacq, B

“…The basal mantle of the Semail ophiolite directly overlying the metamorphic sole has been affected by a late and relatively low temperature ductile deformation…”
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Eclogitization of the Monviso ophiolite (W. Alps) and implications on subduction dynamics by ANGIBOUST, S., LANGDON, R., AGARD, P., WATERS, D., CHOPIN, C.

“…To constrain deep (40–100 km) subduction dynamics, extensive P–T data are provided on the eclogitic Monviso ophiolite derived from the subducted…”
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True metamorphic isograds or tectonically sliced metamorphic sequence? New high-spatial resolution petrological data for the New Caledonia case study by Vitale Brovarone, A., Agard, P.

“…The metamorphic belt of northern New Caledonia represents one of the best-exposed example of fossil Pacific-type subduction zone and a worldwide reference for…”
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Timescales of subduction initiation and evolution of subduction thermal regimes by Soret, M., Bonnet, G., Agard, P., Larson, K.P., Cottle, J.M., Dubacq, B., Kylander-Clark, A.R.C., Button, M., Rividi, N.

“…Subduction zones are first-order features of plate tectonics on Earth, yet the mechanisms by which subduction initiates remain enigmatic and controversial…”
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The Zermatt-Saas ophiolite: the largest (60-km wide) and deepest (c. 70-80 km) continuous slice of oceanic lithosphere detached from a subduction zone? by Angiboust, S., Agard, P., Jolivet, L., Beyssac, O.

“…The Western Alps are a classic subduction‐related collisional orogen with well‐preserved, deeply subducted ophiolitic remnants of oceanic lithosphere. Some…”
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A 3-D crustal shear wave velocity model and Moho map below the Semail Ophiolite, eastern Arabia by Weidle, C, Wiesenberg, L, El-Sharkawy, A, Krüger, F, Scharf, A, Agard, P, Meier, T

“…SUMMARY The Semail Ophiolite in eastern Arabia is the largest and best-exposed slice of oceanic lithosphere on land. Detailed knowledge of the tectonic…”
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Evidence for Paleocene–Eocene evolution of the foot of the Eurasian margin (Kermanshah ophiolite, SW Iran) from back-arc to arc: Implications for regional geodynamics and obduction by Whitechurch, H., Omrani, J., Agard, P., Humbert, F., Montigny, R., Jolivet, L.

“…The nature and significance of the Kermanshah ophiolite (Zagros Mountains, Iran), traditionally identified as one of the remnants of the Peri-Arabic ophiolite…”
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Fluid‐Assisted Deformation and Strain Localization in the Cooling Mantle Wedge of a Young Subduction Zone (Semail Ophiolite) by Prigent, C., Guillot, S., Agard, P., Ildefonse, B.

“…This study reports on feedback mechanisms between fluid migration, ductile deformation, and strain localization processes in an incipiently forming mantle…”
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Subduction interface processes recorded by eclogite-facies shear zones (Monviso, W. Alps) by Angiboust, S., Agard, P., Raimbourg, H., Yamato, P., Huet, B.

“…The Monviso ophiolite Lago Superiore Unit constitutes a well-preserved, almost continuous upper fragment of oceanic lithosphere subducted at c. 80km depth,…”
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Effect of fluid circulation on subduction interface tectonic processes: Insights from thermo-mechanical numerical modelling by Angiboust, S., Wolf, S., Burov, E., Agard, P., Yamato, P.

“…Both geophysical and petrological data suggest that large amounts of water are released in subduction zones during the burial of oceanic lithosphere through…”
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Transient, synobduction exhumation of Zagros blueschists inferred from P-T, deformation, time, and kinematic constraints: Implications for Neotethyan wedge dynamics by Agard, P., Monié, P., Gerber, W., Omrani, J., Molinaro, M., Meyer, B., Labrousse, L., Vrielynck, B., Jolivet, L., Yamato, P.

“…We present the first P‐T, deformation time, and kinematic constraints on the only known blueschist facies rocks (BS) present in the Zagros (Hajiabad area). The…”
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Burial and exhumation in a subduction wedge: Mutual constraints from thermomechanical modeling and natural P-T-t data (Schistes Lustrés, western Alps) by Yamato, P., Agard, P., Burov, E., Le Pourhiet, L., Jolivet, L., Tiberi, C.

“…The dynamic processes leading to synconvergent exhumation of high‐pressure low‐temperature (HP‐LT) rocks at oceanic accretionary margins, as well as the…”
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Fossil seamount in southeast Zagros records intraoceanic arc to back-arc transition: New constraints for the evolution of the Neotethys by Bonnet, G., Agard, P., Whitechurch, H., Fournier, M., Angiboust, S., Caron, B., Omrani, J.

“…The Neotethys ocean is transiently involved in two subduction zones during the Late Cretaceous. While the Northern Neotethys subduction zone (below Eurasia)…”
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Structure and metamorphism of a subducted seamount (Zagros suture, southern Iran) by Bonnet, G, Agard, P, Angiboust, S, Monié, P, Fournier, M, Caron, B, Omrani, J

“…Millions of seamounts on modern and past seafloor end up being subducted, and only small pieces are recovered in suture zones. How they are metamorphosed and…”
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