Dictionary:Fig B-11

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FIG. B-11. Buried focus reflection. (a) Model of a simple syncline showing several raypaths for common source-detector traces. (b) Schematic time section corresponding to the model. (c) Record section for a 2D model similar to that shown in (a), showing three branches; the pattern is sometimes called a bow tie. Note the 90° phase shift in the reverse branch. (Courtesy Chevron Oil Co.)