Accretionary prism deformation and fluid migration caused by slow earthquakes in the Nankai subduction zone [PDF]
Solid EarthSlow earthquakes induce structural deformation around their source regions and can also be linked to fluid migrations. Both of these phenomena potentially induce temporal variations in the seismic structure; how these two factors behave for a slow ...
T. Tonegawa +7 more
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Correction to “Fluids in accretionary prisms” [PDF]
Reviews of Geophysics, 1992 J. Casey Moore, Peter Vrolijk
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Tectonic structures and stress state associated with seamount subduction in accretionary prism. Implications for slip behavior [PDF]
International audienceSeamounts on oceanic plates are thought to affect the dynamics of accretionary prism at subduction zones, particularly the slip behavior.
Gauthier, Alexis +2 more
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Fluid sources, fluid pathways and diagenetic reactions across an accretionary prism revealed by Sr and B geochemistry [PDF]
, 2005 ODP Leg 204, which drilled at Hydrate Ridge, provides unique insights into the fluid regime of an accretionary complex and delineates specific sub-seafloor pathways for fluid transport. Compaction and dewatering due to smectite–illite transition increase
Bohrmann, Gerhard +3 more
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The role of compaction contrasts in sediments in décollement initiation in an accretionary prism [PDF]
, 2011 International audienceTo understand how décollements develop into the pristine sedimentary succession entering subduction zones, we have performed mechanical tests on samples from the sediment column entering the Nankai accretionary prism, Japan (ODP ...
Raimbourg, Hugues +4 more
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Origins of porosity and velocity variations at Cascadia Accretionary Prism [PDF]
Geophysical Research Letters, 1997 At Cascadia accretionary prism, log‐based porosities exhibit complex lateral changes in response to variations in cementation, horizontal compression, and fracturing. Porosities at the prism toe are lower than in reference sediments, whereas porosities landward of the toe are slightly higher than those of reference sediments.
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Stress reversal recorded in calcite vein cuttings from the Nankai accretionary prism, southwest Japan [PDF]
, 2014 The Nankai Trough subduction zone in southwest Japan is a typical convergent margin where the Philippine Sea plate subducts in the northwest direction beneath the Eurasian plate, and devastating earthquakes have repeatedly occurred in this region in the ...
Shigematsu, Norio +5 more
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Numerical analysis of deformation in the upper part of subduction zones [PDF]
, 1981 The stresses and deformation in an accretionary prism, and the crystalline basement behind and beneath it, have been modelled using finite element analysis, assuming a visco-elastic Maxwell rheology for the rocks involved.
Park, M.J.M.
core
Discharge of deeply rooted fluids from submarine mud volcanism in the Taiwan accretionary prism. [PDF]
Sci Rep, 2020 Chen NC +10 more
europepmc +1 more source
Analogue model experiments on the formation of accretionary prism
The Journal of the Geological Society of Japan, 2006 スケールアナログモデル実験（以下モデル実験と略）は，地質構造の形態やその形成過程を検討するための優れた手法である．自然現象である地質構造形成過程を縮小して，それと物理学的に等価な現象を実験室で再現するためには，相似律と呼ばれる理論に基づいてサイズや物性を変更する必要がある．上部地殻の岩石変形挙動を脆性破壊で近似した場合，相似律によると実験材料を乾燥粒状体（砂やガラスビーズなど）にする必要がある．今回のミニスクールでは，実験理論である相似律と実験材料の物性に関して概略を説明した後，実際に乾燥砂を使ったモデル実験を行って，モデル化した付加体形成過程を観察する．
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