In their discussion, Lambert-Aikhionbare and Ibe (1984) have presented a single CR/CT plot of 26 samples and a Van Krevelen diagram of 32 samples statistically biased (≈ 90%) toward the Agbada Formation. Field or well names and sample depths are not mentioned or listed to provide specific areas for discussion. Their cited abstract (Lambert-Aikhionbare and Ibe, 1980) also lacks specific data. Lambert-Aikhionbare (1982) alone published a diagenetic study of the Niger delta which claims to show differences between reservoir and nonreservoir sands in terms of diagenetic minerals which, in our experience, occur only in very...
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