Pine Island Formation is a transgressive sequence primarily consisting of shales with occasional fine-grained sand and siltstone stringers. In West Raymond, the Pine Island is 100 to 150 ft thick and productive in one well. Conformably overlies the Sligo Formation and underlies the Rodessa Formation. Age is Early Cretaceous.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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