Deep seismic reflections and the deformational mechanics of the continental lithosphere

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Authors:Kusznir, N. J.; Matthews, D. H.
Author Affiliations:Primary:
Univ. Liverpool, Dep. Earth Sci., Liverpool, United Kingdom
Univ. Oxford, United Kingdom
BIRPS, United Kingdom
Volume Title:Oceanic and continental lithosphere; similarities and differences
Volume Authors:Menzies, Martin A., editor; Cox, K. G.
Source:Journal of Petrology, Vol.1988, p.63-87; International conference on Oceanic and continental lithosphere; similarities and differences, Egham, United Kingdom, July 5-10, 1987, edited by Martin A. Menzies and K. G. Cox. Publisher: Clarendon Press, Oxford, United Kingdom. ISSN: 0022-3530
Publication Date:1988
Note:In English. 30 refs.; illus. incl. sects., sketch map
Summary:To date no unequivocal example of a low-angle fault passing continuously from the surface through into the mantle has been observed. Deep seismic studies show that mountain root Moho topography created during continental collisional tectonics is absent for old mountain belts (e.g. Caledonides and Variscides). Thermo-rheological models suggest that the decay and annihilation of mountain-root Moho topography can be achieved within 100 m.y. by an outwards ductile flow in the low viscosity channel of the lower crust and an inwards ductile half-space flow in the upper mantle. [R.A.H.]
Subjects:BIRPS; Compression tectonics; Continental crust; Crust; Ductility; Extension tectonics; Interior; Isostasy; Lithosphere; Mantle; Mineral composition; Mohorovicic discontinuity; Seismology; Shear zones; Tectonics; Thickness; Upper mantle; Velocity structure; Viscosity; Europe; United Kingdom; Western Europe
Abstract Numbers:89M/3662
Record ID:1989023346
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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