Page 10 - Spongy-like_2016
P. 10

S. Todaro et al. / Sedimentary Geology 333 (2016) 70–83           79
                         A


                                                                  ()13C
                                               ... .          • •  ,00   •
                                                               3,0~
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                                       •               •       1,00                + RFC

                                                               " ""
                            r                                  v,vv
                          -4,00     -3,00     -2,00     -1,00      o, p o    1,00   •  Blocky calcite
                                             • •              -1,00                e Reddish
                                                              -2,00                 sediments
                                                              -3,00
                               •                              -4,00


                                                              -5,00

                         B
                                                   o                                +
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                                                                                               +  +
                                                                                               :r•
                                                                                               +
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                                                                   •  Telhyan brachiopods (low Mn, high Sr)   t   .
                                                                   •  Muschelkalk brachiopods (low Mn, high Sr)   •••
                                                                   o  ali brachiopods (high Mn, low Sr)
                          c:                                       a  Telhyan aragonite
                          m      •  brachiopods (low Mn, high Sr)
                         ·c:   ~   o  brachiopods (low Sr, high Mn)   •  Telhyan conodonts
                          o
                          z   (f)   c  aragonitic fossils          •  Telhyan wllole rod<, exoept Soolhem Alps
                            (f)                                    ,  wllole rod<, Soolhem Alps
                            <l:   o  whole rock (lhis study)
                            cr   "  whole rock (prevlous studies)
                            1-   o  whOie rock (previous studies)
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                                  - 1   o    1    2    3    4       8   7   6   -5  -4   -2      o
                                                                             ,  (cm~onat~)
                                                                  -l 7  -l 6  -l 5  - l 4  - l 3  - l 2  -l l  - l o  -9
                                                                               ( phosphat.:)
                                                                              18
                                                                             o 0  (%oVPDB)
                    Fig. 9. A) Carbon and oxygen isotopic data (Table 1) compared to the stable isotopic values (B) recorded during Triassic (after Korte et al., 2005).
          first episode of infiltration of the red silt, appears to be related to the re-  moderate under CL, is consistent with cementation under oxic marine
          establishment of fully-marine phreatic conditions during the subse-  phreatic conditions. The early filling by RFC stabilized the cavities and
          quent flooding of the platform (Fig. 13, step 4). The isotopic signature  prevented their collapse during the deposition of subsequent marine
          of a first generation of RFC cement rimming the cavity walls, and its  sediments. The absence of pendant or meniscus cements in the spongy
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