It is a matter of common knowledge that in some regions buried sands are either dry or are only partially saturated with water, and that, in consequence, such oil pools as are present tend to occur in synclines, or perched on terraces on the limbs of synclines, rather than beneath anticlinal crests. Such synclinal accumulations are, so far as the writer is aware, found in regions which have been undergoing upwarp and erosional unloading for a considerable period, and this relationship is believed to afford the clue to the partial or complete lack of water in sands which undoubtedly were...
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