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is
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                                                                                             Rectangle   wedge,  by  G.  Geological  Society  of  top  of  oceanic  layer  2  extends  from   from  Nanki  time  section   Nanki  Trough,



           Active  Continental  Margin   Flysch/Molasse   ;                                  basin  closure  and  continental  collision.   development  of  an  accretionary   permission  of  the  that  separates  deformed  accretionary  wedge  sediments  from   Unmigrated   reflection  data  across  {nstitute,  University  of Tokyo, Tokyo,  Japan.  Moho  reflections







       Subduction   Basin   Margin   thick   —    Thrusting   in   _-External  Massif                the   in  pressure   Redrawn  with   1983.   representing  the  pattern   diffractions.  c)   the   above  N.  Nasu  and  others,  Multi-channel  seismic   top  of  oceanic  layer  2.  the






       During   Ocean   Crust   Passive   of   Foreland   Involved   Fold-and-   Belt                pore-fluid   11,  pp.  279-283,  ©   Hyperbolic  diffraction  west.  A  décollement  surface   s  lies  about  0.5   Research  1982,  Ocean   representing



       Closes   ~—  Ocoganic       Décollement     Basement   Thrust                          Lithospheric  cross  sections  illustrating  stages  of ocean   role  of  high   the   vol.   1)   layer   (Line  N55-1).  From   ©   #4,   hyperbolic  pattern



       Basin                 Underthrusting                                                    Fig.  6.36.   in   (continued)   M.  Smith,  Geology,  America,  Boulder,  Colorado,  USA.   on  east,  to  9.5  s  on  hemipelagic  sediments  (oceanic   Data  Series   Basic   the


       Ocean   Passive  Continental  Margin’   Initial   Continental                          6.35   region  portrayed   6.34  FIGURE   Westbrook  and   about  8.5 s   Trough  off  Japan   IPOD,  Japan   lie  about  2s  below



       a)                    b)                    c)                                         FIGURE









                                                                                                     Middle  America  Trench   1988.   ©   cue  a  Looe.   i   ca  ee te  Sire  dln   i  ecte os  for  arbad   Bz   from   a   Ridge  at





                                                                               Sot  Layer 22%  =     the   from  vol.  93,  pp.  8911-8927,   is   i  aa  MimeGAuuet   dé   thrust   3   ses   b:   time  section  possasiGl   tells   Barbados   the   trom




                                                                              eee  Sari eae  en   ic   Migrated  depth  section   Water   D.C.   |   Melsteat of   toe   at   beneath   the   of  oceanic   top   if Unmigrated   b)   Evidence



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                                                                               he   ees  Sa    Sorts   ERIN   VERN      =  T.  Shipley,  Journal  of Geophysical  Research,   Washington,  Union,   Xi  trench   idi  turbidites)  extend  hemi pelagic  sediments   i   i  ramping  of  thrust  décollement.   mud
                                                  Jo  5  a  Bee   wie   Paitig-   Foe  17           —  reflection  profiles  across  deep-sea  trenches.  a)   i   oe  he:  Moore   Geophysical  American   the   lyi   flat  turbidites  are   ying  at   trench  beneath   z   normal  faults  offset  basement  buttress,  causin ig ;   2   i  Long  décollements  and  Sea,  From

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                                        Nn   ©   ®    S                                             ismric   ae ms   ssion  of   depth.  Trench   km  Hemipelagic  sediments  (trans parent  zone  accretionary  wedge.  Flexural   vec   rigid   as   Caribbean   the   in
                                                      ~                                                  nearly  5  !
     w         (wy)  yjdeq                  (S)  ew]  JEABLL           (s)  euny  janes,  AeAA-OML      a   i   P   blocks  act   :   complex
                                              Aepf-OML          O                                   FIGU  SiMe   aa   to
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