| Seals |
In most Moroccan Sedimentary basins and for most prospective reservoirs, exist adequate seals. These are:
- Tertiary marl and shale;
- Cretaceous shale and marls and, in places, salt and anhydrite;
- Jurassic shale, anhydrite and in places salt;
- Thick Triassic shale and salt is the most adequate seal for any sub-salt reservoir;
- Within the Paleozïc succession each shally interval may act as a seal for underlying reservoirs.
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