Page 138 - Carbonate Facies in Geologic History
P. 138

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                 shale
                 in                       Lecompte           the
                 nodules   limestone   Nodular  limestone   tidal  flats  became   surrounded


                 Limestane   Shale   Limestone   Marly   From   -18.   progression  of faunas  adapted to   shales
                 ~   ~   ~   -  ~   ~     IV   and           dark



                           -
                                          -17   IV           Ultimately
                      stromatoporoids   stromatoporoids  Bra nc hed  stromatoporoid   Tabulate   Figs.   for  These diagrams show dearly the pattern of cydic deposition resulting from fluctuations   them.
                                 coral


                 Receptaculites   Solitary  coral   Massive   Adnate   coral   Stalked   Stromatactoid   Branched  Fig. IV-18. Bioherms of the Middle Frasnian (Upper Devonian) in the Dinant basin, Belgium   legend  in relative sea level and reciprocal sedimentation on shelves and individual mounds. During  a carbonate producing (transgressive-dear water phase) deposition was rapid





                 @   JJ   ~   ::z#"   ?-'   IillL::"   ~   ~}   special   of mounds show off-mound water depths of 100 meters.  As  sea level  fell   occurred
                                          with        were building up from  deeper  to shallower  water with  a   fissuring


                 Alveolites   Alveolites   facies   lateral   and



                 Massive   Adnate   Brachiopod   Crinoid   Disphyilum   ~  Gastropod   Heliophyilu m   Hexagona  ria   Ammonites   their   (1970, Fig. 9)  .   brecciation



                 a   '-./"'   cI)   <::)   =   n   11   t89   and   and





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