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The Lisbon field looking east of a sharp contact between the Jurassic Wingate Sandstone and Kayenta Formation. Note the subvertical joints in the Wingate Sandstone, which provide pathways for hydrocarbon seepage.
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The Lisbon field looking east of a sharp contact between the Jurassic Wingate Sandstone and Kayenta Formation. Note the subvertical joints in the Wingate Sandstone, which provide pathways for hydrocarbon seepage.