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Lindsey Slough gas field is 4 mi north of the town of Rio Vista, Solano County, California. It has a major gas accumulation in Upper Cretaceous Starkey sandstones between the depths of 8,500 and 10,300 ft, as well as some lesser reserves in Paleocene Martinez and Upper Cretaceous Mokelumne sandstones at 7,000 and 8,300 ft, respectively.

The field is on the east limb of the Sacramento Valley syncline where the closure is defined by two large normal faults. One strikes northwest along the updip edge of production and the second crosses the field on a more westerly trend. The cross fault separates the lower, southern block from a wedge-shaped horst on the north.

The stratigraphic section at Lindsey Slough indicates a continual decrease in water depth from the deposition of Upper Cretaceous F-zone sediments, through several marine transgressive-regressive depositional cycles of different areal extents, to the final post-Eocene emergence and transition to nonmarine deposition.

Faulting during the close of the Late Cretaceous at Lindsey Slough, and subsequent downwarping of the basin on the south and west, made conditions favorable for gas accumulation in the Starkey, Mokelumne, and Martinez sandstones.

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