epeirogenic

Dynamic rejuvenation may be caused by the epeirogenic uplift of a land mass.

Faults started to appear at this time due to epeirogenic movement, vertically lifting and lowering the surface.

Magmatic underplating is important for causing quick epeirogenic uplift in certain areas.

Epeirogenic movement can be permanent or transient.

A parageosyncline is an epeirogenic geosynclinal basin located within a craton area.

Epeirogenic movement has caused the southern Rocky Mountain region to be uplifted from 1300 to 2000 m since the Eocene.

Tectonic activity is minor, with occasional broad domes and basins that reveal mild epeirogenic deformation.

Since the Oligocene, episodic epeirogenic uplift gradually raised the entire region, including the Great Plains, to present elevations.

Epeirogenic uplift is a long-wavelength form of uplift and be split up into two separate categories, which is transient and permanent.

Permanent epeirogenic uplift is possibly mainly produced by magmatic underplating, while transient uplift is more involved with mantle convection.

In 1924 he suggested a tectonic model for the continents that postulated alternating periods of orogenic (mountain building) and epeirogenic (no mountain building) episodes.

Epeirogenic uplift and subsidence are closely related phenomena and a number of the mechanisms of uplift discussed in Section 4.2 may be relevant to crustal subsidence.

Subsequent deformation on the craton has been largely epeirogenic forming shallow fault-bounded intracontinental depressions represented by Cainozoic basins, the southern continental margin and Spencer Gulf.

In geology, epeirogenic movement (from Greek epeiros, land, and genesis, birth) refers to upheavals or depressions of land exhibiting long wavelengths and little folding apart from broad undulations.

In contrast to epeirogenic movement, orogenic movement is a more complicated deformation of the Earth's crust, associated with crustal thickening, notably associated with the convergence of tectonic plates.

Thus the major cyclic changes in Jurassic sedimentation (and possibly even the changes of faunal and floral evolution) have been blamed on eustatic changes in sea-level, and these in turn on epeirogenic movements on the ocean floor.

However, there is evidence the hotspot track extends northwestwards, including epeirogenic uplift, mantle velocity anomalies and kimberlitic volcanic features (e.g. the Attawapiskat, Kirkland Lake and Lake Timiskaming kimberlite fields) that become older away from the Monteregian Hills.

A more detailed treatment of epeirogenic uplift is to be found in McGetchin and Merrill (1979); in spite of its general title it is almost solely concerned with the Colorado Plateau, but it does contain a brief but wide-ranging review of uplift mechanisms.

This process has been termed delamination and may be capable of causing epeirogenic uplift through the exposure of the cold base of the crust to hot mantle from the asthenosphere and the replacement of relatively dense lithospheric mantle by less dense mantle from the asthenosphere.

Orogenies in the surrounding provinces have had little effect on the craton, making it an epeirogenic region, and, as such, the stable platform is mostly a crystalline basement, covered by sedimentary rocks, interrupted only by occasional domes, such as the Cincinnati Arch, Wisconsin Dome, and Ozark Dome.