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On the Manas blocks a thrust sheet called the Kryja outcrops and is made up of older massive Cretaceous (formed 145 million to 65 million years ago) to much younger Eocene limestones with multiple seepages of oil. The Kryja is over-thrust on top of the Ionian thrust sheet, which is the targeted reservoir and holds all Albanian reserves. The Ionian thrust sheet's source rocks are more ancient Jurassic carbonates and shales formed from 199 to 145 million years pervious. They are covered by Cretaceous to Eocene Limestone reservoir rocks which are then sealed by thick Miocene (within the Neogene period) flysch. |
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