An attempt to visualize what some modern coral-reef alignments and configuration might

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appear like if projected into the rocks of the past geological periods is the main theme of this paper. As an example, the tilting, warping or folding of sizeable atolls and the resultant accumulation and concentration of oil or gas are considered from a theoretical viewpoint. Subsurface contouring of reef surfaces is also discussed on the basis of their growth, evolution and history.

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