Explanation
Black Wells-Triassic and Lias Thickness
White Wells-Triassic and Lias zero thickness in subsurface
Red Wells-Spudding in sub-Triassic and Lias
Gray Wells-Triassic and Lias penetrations, no impact in mapping
Yellow Wells-Triassic and Lias penetrations, judged to and caused to have impact in mapping
Reddish pattern indicates sub Triassic and Lias Outcrop, used to constrain mapping