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the   con-   strictly   form   his-   must   the   the   6.1).   137
                                                               in   firm   tectonic   continental   of   geome-   subsurface   geome-   display   migrated   if   as   (Fig.   reflected   seismic   appears
                                                               structures  geological   to   tied   be   not   when   Even   structural   gross   the  unravel   with  associated   profiles  reflection   pitfalls   and   structural   tectonic  settings.   on  constraints   simple   how   of   A  common  displays.   yield   to  further   data  reflection  the  same  surface  position   be  surface   the   unmigrated   An   (event)  reflection





                       Tectonic   Seismic   Earth.   fectere,  to  bend],  to   interpres,   <   in  tur'prata’   map   to  extensively   can  reflections   when   1.8).   (Fig.  drilling   on  information   to   tools  valuable   features  contrast   seismic  sections,   utility   the   both   for   of  different  expression   of  characteristic   provide  profiles   appreciation  requires   section  of  seismic   processed   be   may   display   to  attempt   at   were   at  record










                6           Of   Profiles   Gr.  seismos,  an  earthquake  <  seiein,  to   +   back  the  bending  back  of a  ray  or  wave  of light,  the  same  medium,  as  it  encounters  a  medium   interpretari  the  meaning  of;  to  give  one’s  own   (siz  mik’  ri flek’shon  an  explanation  of subsurface  conditions  that  led  to  the   Earth’s  surface.   used   useful   and  outcrop   provide   thus   are   and   cross  geological   appreciation   seismic   the   patt
                RR.    And          :   shake],  relating  to  an  earthquake  or  artificial  shaking  of the   <  res,   L.   L.   <   MFr.   are  profiles   especially   surface   geometries   profiles   compare   to   boundaries.   with   examines   STRUCTURES   PROFILES   seismic   interpretation   different   section;   sections.   time   that   an   to   a   as   to


                Tok         Interpretation   [<   adj.,   Mfr.  <   [<   vi.,   n.,   (<   vt,   interpretation  reflection  of seismic  waves  back  to   are   They   by   reflection   Seismic   and   plate   resembling   wisely,   reflection   OF   on  events   on  appear   time   depth  migrated   unmigrated   receiver for  each   requires   angle)   90°   referred


                OP     Structural   Reflection   seismic  (siz  mik')   reflect  (ri flekt')   (ri  flek’  shan)   or  sound  into  with  different  properties.   tur’  prit)  negotiator],  to  explain   understanding  of.   seismic  reflection   n.,   reflection   provided   crust.   the   region,   a   and   Though   interpreted  method. This  chapter   shows   then   REFLECTION   of   structure.  Structural   would   unmigrated   and   An   and   situation   a   (at   thus   is
                HeA                        bend  back.   reflection   heat,   interpret  (in   shan)   Seismic   subsurface.   straints   constrained,   within   of   tory   margins   be   tries,   APPEARANCE   Patterns   tries   the   is   time   source   This   normal   section


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             two   km          the   in   of   of   Tulsa:   Houston:   Sons,   Prentice   Rocky   of   Methods,   Develop-   [nter-   Corp.,   of   Society   A.   D.
         Analysis   first   the   reflections.   15  receiver   Rocks:  Seismology   Story   The   Revolution   Geophysical’   Stratigraphy:   Exploration,   Geologists,   Exploration   and   Wiley   Geophysical   N.J.,   1981,  Seismic   in   Traps   Association   Exploration   in   Resources   Geophysical   in   Boston:   Development   Dictionary   Tulsa:   pp.   Exploration   1995,   Cambridge   and  Sheriff,   Cambridge:


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        Acquisition,   record   water   the   based   the   The   Human   Develop-   of   of   15,   Prentice   Middle   Modern   von   of   26.   to   Petroleum.   Search   Basin   of   in:   M.   Tulsa:   Geologists,
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        Reflection:   gather)   from   water  depth   illustrating   Interpretation:   International   pp.  Corporation,  625   Interpretation,   Resources   Expression   Association   Geology  Series   Geophysics  of the  Shallow   N.J.:   Cliffs,   1986,   The   of  Images   R.  Structure,   Association   Geology   in   Geophysical   to   McGraw-Hill,  York:   Introduction   of   pp.   Deliberate   pp.   Sedimentary   Mechanisms   America  Trench   perspective  on  seismic  reflec-



        Seismic   (shotpoint   reflections   the   raypaths   source.   Seismic   Seismic   Human   Seismic   American   Englewood   Watkins,   Seismic   Tectonic   American   Studies   Introduction   New   Geophysics:   Geology   Press,  231   1982,   The  for  the  Subtle  Trap, Tulsa:  American  Association  of   of  York:  Springer-Verlag,  490  pp.   1988,  Shipley,   Middle   the  off  Mexico, Journal  of Geophysical  Research,  v.93,   The   Brown   of   L-3.  14,  pp.

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