The formation-to-age correlations are not straight-forward as formation names for a given geologic age do change from locale to locale, even within the same state. Over 4,000,000 wells have been scrutinized to develop the US Continental well database which has been datum-corrected to subsea (bsl) depths and transcribe to Latitude & Longitude positions. All formations with corresponding depths were preserved. A colleague can access the database to query and retrieve over 1,000,000 tied well tops. Additional subsets of geological mapped surfaces and corresponding isopachs are available.
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