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SEDI PAL"t"t:f

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- 26 -<br />

D. ARGILIl'ES FEUILLETEES A ATTAPULGITE 55<br />

1. 9lauconitite sableuse phosphatée<br />

1.1. Aspects caractéristiques<br />

1. 2. Diffractométrie<br />

1.3. Milieux et condi tions de genèse<br />

1.4. Autochtonie<br />

2. Argilites vertes feuilletées<br />

3. Niveaux intercalaires carbonatés<br />

E. EVOLUTION DES MINERAlJX ARGILEUX<br />

F. "EWCKOBO FORMATION" (NIGERIA) EQUIVALENT LATERAL DES CALCAIRES<br />

DE TABL IGBO •••••••••••••••••••••.•••••••••'............................. 68<br />

C:ONCI.USION ••••••••••••••••••••••••••••••••••••••••••-...................... 69<br />

65

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