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New information from deep Paleozoic wells on the La Barge platform has allowed explorationists to depict accurately the relationships between the Triassic Thaynes Limestone and structures with production from the Nugget Sandstone. The parautochthonous structures occur in the footwall of the La Barge, Prospect, and Darby thrusts.

The core-thrusted kink folds originated from a glide plane in the Thaynes Limestone. The glide plane can be easily identified on electric logs. The folds formed as one of the first structural events on the La Barge platform. Comparatively minor west to east movement of Thaynes and younger rocks produced a significant vertical deformation. As the core of Thaynes Limestone accumulated, it forced the younger more competent strata to form parautochthonous kink folds.

In the process of making this investigation, the chronologic sequence of thrusting has been worked out for the area. From oldest to youngest the thrusting sequence is: (1) Calpet, (2) La Barge, (3A) Tip Top, (3B) Dry Piney, (3C) Lake Ridge (proposed), (4) Prospect, (5) Darby (hogsback), (6) One Mile (proposed), and (7) Cretaceous Mountain. This interpretation varies substantially from the work of others.

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