Area With Suspect Thicknesses Due To Structure
"Thicknesses observed in well logs in this area are suspect due to high potential for structural complexity, including faulting and high bed dips.  Wells for which values are deemed most unreliable are marked with an *"

That may be too many words, so...

"Thicknesses in this area are suspect due to potential faulting and high bed dips.  Wells with unreliable values are marked with an *"
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nan
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nan
nan