New petroleum is found with ideas.

The explorationist must think in terms of scale and context. This symposium focuses attention on some very large scale features of both the upper mantle and crust. Deep-seated inhomogeneities and regional discontinuities periodically will leave their imprint on the upper crustal rocks on land and under the sea--perhaps even in the deepest ocean basins. By recognizing these major features and trying to understand their behavior, we will develop the context into which smaller-scale features must be fitted. By drilling these features we will find the petroleum of tomorrow. It is, therefore, timely that we lay the groundwork needed to develop these ideas that will lead to our discoveries of the coming decade.

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