Rift asymmetry and continental uplift

@article{Doglioni2003RiftAA,
  title={Rift asymmetry and continental uplift},
  author={C. Doglioni and E. Carminati and E. Bonatti},
  journal={Tectonics},
  year={2003},
  volume={22},
  pages={1024-1036}
}
[1] The topography of ocean ridges and rifts show a distinct asymmetry. The eastern sides of the East Pacific Rise, the Mid-Atlantic Ridge, and the NW Indian Ridge are, on average, 100–300 m more elevated than the conjugate flank to the west. The asymmetry is maintained when bathymetry is plotted versus the square root of crustal age. A comparable topographic asymmetry occurs in the Red Sea and Baikal rifts where the “eastern” continental shoulders are more elevated. We suggest that depleted… Expand
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References

SHOWING 1-10 OF 98 REFERENCES
Dynamic topography, plate driving forces and the African superswell
Discovering the connection between processes observed to occur at the surface of the Earth and its internal dynamics remains an essential goal in the Earth sciences. Deep mantle structure, asExpand
Mantle plumes, continental magmatism and asymmetry in the South Atlantic
Melt production rates are estimated along the ocean tracks (Rio Grande Rise, Walvis Ridge) and the onshore Parana/Etendeka Flood Basalt Province for the mantle plume currently associated with TristanExpand
Uniform-sense normal simple shear of the continental lithosphere
Geophysical studies suggest that the thin crust characteristic of the Basin and Range Province extends eastward beneath the west margin of the Colorado Plateau and Rocky Mountain regions. In ArizonaExpand
Shipboard geophysical indications of asymmetry and melt production beneath the east pacific rise near the MELT experiment
TLDR
Variations in axial ridge shape, axial magma chamber continuity, off-axis volcanism, and apparent mantle density indicate that upwelling is probably faster and more melt is produced beneath 17 degrees15'S than beneath 15 degrees55'S. Expand
Variations in ridge morphology and depth‐age relationships on the Pacific‐Antarctic Ridge
Adjacent segments of the Pacific-Antarctic ridge display significantly different morphologies and depth-age relationships over seafloor younger than 36 Ma. The spreading corridor southwest ofExpand
Tectonic corridors in the south Atlantic: Evidence for long‐lived mid‐ocean ridge segmentation
The South Atlantic is investigated for evidence of long-lived (tens of millions of years), tectonic segmentation of the mid-ocean ridge by examining a variety of geophysical parameters. TheseExpand
A Cold Suboceanic Mantle Belt at the Earth's Equator
TLDR
Gravity data suggest the presence of high density material in the oceanic equatorial upper mantle, which is consistent with its inferred low temperature and undepleted composition, and the equatorial distribution of cold, dense upper mantle may be ultimately an effect of the Earth's rotation. Expand
New seismic model of the upper mantle beneath Africa
We present a seismic model of the upper 400 km of the mantle beneath Africa and surrounding regions. This model is constructed by inverse modeling of fundamental mode Rayleigh wave phase velocitiesExpand
Spatial and temporal variations of subsidence of the East Pacific Rise (0–23°S)
Abstract The distributions of crustal depths as a function of age have been analysed for the southeast Pacific region, along the East Pacific Rise, between the Equator and the Easter microplateExpand
On the origin of west-directed subduction zones and applications to the western Mediterranean
Abstract West-directed subduction zones show east-verging arcs of 1500–3000 km. They are usually younger than 50 Ma and are characterized by a frontal accretionary wedge and a back-arc basinExpand
...
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3
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5
...