Download original image
Micrographs of some BBMs samples. For location of the corresponding outcrops, see Figure 4 (JN) and Figure 5 (other samples). Crossed nicols except (C), plane-polarized light, and (G), backscattered-electron image. Sm: main foliation. A: Metadetrital, pebbly marble from the Amter road (outcrop 1a), ∼1 m above the unconformity (Fig. 6C). B: Magnesian marble from the same road-cut, ∼50 m above (A) (marble lens 1b). C: Metadetrital banded marbles of Oued Jnane Nich lens (JN, Fig. 4); the dashed line marks the limit between two elementary layers, calcite-rich and clastic-free, respectively, interpreted as S0. D: Same outcrop, calc-mylonite facies. E: Calc-silicate bed, likely clastic and including minute pebbles (left area); same location as (B). F: Meta-argillite layer interbedded with banded marbles (lens 1c). G: Dolomite-rich calc-silicate bed (Oued Ljouj lens). The aggregates of calcite + serpentinized forsterite in dolomite matrix are interpreted as calcite + forsterite pseudomorphs after diopside. H: Banded phyllitic marble, same outcrop as (F); talc and muscovite are retrograde.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.