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The AAPG/Datapages Combined Publications Database
Utah Geological Association
Abstract
Oil and Gas Possibilities of the Overthrust Belt of Western Utah
Abstract
Multiple thrust complexes encountered in the oil and gas wildcat wells in central Utah tie to surface thrusts and normal faults on the surface to the east and west to prove horizontal thrusting occurred in all of western Utah.
Late Cenozoic extension has allowed horizontally stacked sedimentary complexes to move back to the west along these pre-existing thrust-formed listric faults. Many of the down-to-the-west, so-called normal, faults are now proven to be normal listric faults with movement down into the late Tertiary basins. Seismic work and some deep oil and gas exploration wells prove that the nearly vertical normal fault planes curve and flatten to the west with depth.
Several thrust plates are delineated by recent well control in central Utah. These multiple thrusts are projected to the west using scattered well control and surface geology.
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