Results 31 to 40 of about 768 (99)

Interpretation of porosity and LWD resistivity from the Nankai accretionary wedge in light of clay physicochemical properties: Evidence for erosion and local overpressuring [PDF]

, 2011
International audienceIn this study, we used porosity to assess the compaction state of the Nankai accretionary wedge sediments and any implications for stress and pore pressure.
Archie, Bangs, Bourlange, Bray, Brown, Bussian, Chang, Clavier, Colten-Bradley, Dahlen, Doan, Glover, Gordon, H. Raimbourg, Hart, Hashimoto, Henry, Henry, Henry, Hubbert, Karig, Kinoshita, Le Pichon, Leroy, M. Conin, Miyazaki, Moore, Moore, Moore, Moore, Orsini, P. Henry, Park, Raimbourg, Ransom, Revil, Rubey, S. Bourlange, Saffer, Scholz, Screaton, Screaton, Sen, Seno, Song, Strasser, T. Reuschlé, Underwood   +47 more
core   +4 more sources

Echo character mapping and depositional processes on the western Svalbard continental margin

Polar Research
An echo character mapping study of the western Svalbard continental margin, based on ca. 3980 km of archived sub-bottom profile data, is presented. Four distinct echo character types are recognized.
Niamh I. Doherty, John A. Howe
doaj   +1 more source

Gramscatho-Mylor facies relationships; Hayle, south Cornwall [PDF]

, 2013
The Gramscatho Group and the Mylor Slate Formation are the two main lithostratigraphic groups that outcrop in south Cornwall. Their mutual relationship has been disputed for some time because of poor palaeontological control and the effects of polyphase ...
Shail, RK
core  

Pitfalls and limitations in seismic attribute interpretation of tectonic features [PDF]

, 2015
Seismic attributes are routinely used to accelerate and quantify the interpretation of tectonic features in 3D seismic data. Coherence (or variance) cubes delineate the edges of megablocks and faulted strata, curvature delineates folds and flexures ...
Alves, Tiago Marcos, Marfurt, Kurt J.
core   +2 more sources

A Possible Tsunamigenic Near‐Trench Strike‐Slip Fault, Offshore North Ecuador–South Colombia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Seismic reflection and bathymetry collected along the Ecuador–Colombia obliquely convergent margin allow the first characterization of the NNE‐trending, near‐trench strike‐slip Ancon Fault in the possible source region of the 1906‐Mw8.6–8.8 and 1979‐Mw8.2 earthquakes, which produced devastating tsunamis.
J.‐Y. Collot, G. Ratzov, F. Michaud, A. Galve, J.‐N. Proust, M. Gonzalez, J.‐F. Lebrun, M. Laigle, B. Marcaillou   +8 more
wiley   +1 more source

Sedimentary record of submarine gravity‐flow events in the southern Ryukyu forearc during the last 200 000 years: Archive of mega‐earthquakes and tsunamis

Sedimentology, Volume 72, Issue 7, Page 2323-2360, December 2025.
ABSTRACT Despite high convergence velocity, the southern Ryukyu subduction has relatively low and sparse instrumental seismicity, in contrast with the Yaeyama Islands, hit by huge tsunamis over the last few thousand years. This study explores the potential of deep marine sediments to record past large earthquakes and tsunamis.
Nathalie Babonneau, Gueorgui Ratzov, Charlotte Guerin, Mira Richa, Serge Lallemand, Michel Condomines, Patrick Bachelery, Delphine Bosch, Shu‐Kun Hsu, Chih‐Chieh Su, Ryuichi Shinjo, Andrew Lin, Maria‐Angela Bassetti, Marie Revel, Antonio Cattaneo, the EAGER Scientific Team, M Aizawa, G. Ballas, J.‐H. Chang, Y.‐P. Chang, T.‐T. Chen, Y.‐H. Chen, P. Das, J.‐P. Degeai, J. Déverchère, O. De Raco, N. Gosset, M. Herlédan, S.‐L. Ho, H.‐H. Hsu, Y.‐S. Huang, M. Lanson, C. Letourneau, H.‐S. Lin, L.‐F. Lin, L.‐K. Lin, M. Longo, M. Mérindol, B. Mercier de Lépinay, E. Miramontes, P. Morena, K. Nayak, D. Oregioni, L. Patry, R. K. Pillutla, V. Rigalleau, L. San Pedro, P.‐J. Su, F. Volage, K.‐Y. Wei, B. Whilhelm, N.‐T. Yu, P.‐S. Yu   +52 more
wiley   +1 more source

Flood‐Driven Turbidite Deposition in a Highstand‐Detached Submarine Canyon

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Turbidites on active margins represent key archives of great earthquakes, yet turbidity currents triggered by non‐seismic events complicate paleoearthquake records and influence geochemical budgets. Sediment cores collected from highstand‐detached Astoria Canyon address whether non‐seismic turbidity currents are preserved in canyon ...
Evan Lahr, Andrea Ogston, Rick Keil, Jaqui Neibauer, Jassem Al‐Thani   +4 more
wiley   +1 more source

An approach for characterising the weathering behaviour of Flysch slopes applied to the carbonatic Flysch of Alicante (Spain) [PDF]

, 2014
Various studies indicate that most of the slope instabilities affecting Flysch heterogeneous rock masses are related to differential weathering of the lithologies that make up the slope. Therefore, the weathering characteristics of the intact rock are of
Cano, Miguel, Tomás, Roberto
core   +2 more sources

Near Steady Late Pleistocene Tropical Denudation Rates in SW Madagascar

Journal of Geophysical Research: Earth Surface, Volume 130, Issue 7, July 2025.
Abstract Denudation is a key parameter controlling the evolution of the Earth's surface, the production of soils, the stability of relief, or the long‐term evolution of climate. Climate fluctuations conversely have a strong impact on denudation, but these complex feedback mechanisms are still under‐constrained.
Etienne Large, Julien Charreau, Pierre‐Henri Blard, Germain Bayon, Eduardo Garzanti, Bernard Dennielou, Gwenaël Jouet, Natalia Vazquez Riveiros, Jacques Giraudeau, Laurie Reisberg, Aimeryc Shcumacher, Alfred Andriamamonjy, Amos Fety Michel Rakotondrazafy   +12 more
wiley   +1 more source

Sourcing of Miocene accretionary lapilli on ‘Eua, Tonga; atypical dispersal distances and tectonic implications for the central Tonga Ridge [PDF]

, 2016
Volcaniclastics hosting accretionary lapilli on the Tonga Ridge were sourced from the remnant Lau Ridge, prior to Lau back-arc basin opening. For the ‘Eua occurrences, an atypical dispersal distance of not less than 70 km is estimated, partly arising ...
Beard, Andy, Cunningham, John
core   +1 more source