extensional fault


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extensional fault

[ik′sten·chən·əl ′fȯlt]
(geology)
References in periodicals archive ?
The Ainslie Detachment: a regional flat-lying extensional fault in the Carboniferous evaporitic Maritimes Basin of Nova Scotia, Canada.
According Lay, as the leading edge of the oceanic plate sinks into the mantle, it pulls on the rest of the plate, bending it downward and causing it to break along the extensional fault.
Lynch and Tremblay (1994) and Lynch and Giles (1996) proposed the extensional Ainslie detachment, a large low-angle extensional fault localized near the base of the Windsor Group in the western Cape Breton Highlands, detected by a layer of calc-mylonite and a stratigraphic gap within the Windsor Group.
Nevertheless, as discussed by Rubio and Simon (2007), there are two arguments that support the notion of a recent displacement of the Sierra Palomera fault larger than those of Calamocha and Concud faults, which would be consistent with a common structural pattern of segmented extensional fault zones, in which the displacement profile of the overall structure (throw decreasing from centre to tips) is self-similar with those of individual faults (Cowie and Roberts, 2001).
Following Fyson (1967), Lynch and Tremblay (1994) further proposed that extensional deformation within the Maritimes Basin is not limited to the Margaree Shear Zone, but reoccurred during the late Namurian-early Westphalian with the development of a regional flat-lying extensional fault (the Ainslie Detachment) that developed within the basin fill.
7 degrees oil from a fractured reservoir and an extensional fault zone.
This anomalous oblique to transverse trend of the contractional structures could be attributed to the reactivation of transfer faults of the Mesozoic extensional fault system.
An extensional fault hosts the Minita resource approximately 3.
Rosario strikes NNW, subparallel to Minita and interpreted to be the extensional fault direction.
The compressional structures within the Kalabagh Hills are bounded by extensional faults that contribute a lot to the complexity of structural style.
In figure 3a we can observe the Riedel faults intersecting previous extensional faults around the Lempa basin, generated by the transtensional strain regime.
At least three of the active extensional faults, striking NE-SW, show clayey gouge and a young, possibly Recent, mineralization.