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The tectosphere and postglacial rebound
Author(s) -
Manga Michael,
O'Connell Richard J.
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl02012
Subject(s) - geology , lithosphere , mantle (geology) , deglaciation , geophysics , tectonics , continental shelf , continental margin , ocean surface topography , paleontology , geodesy , oceanography , holocene
Large lateral variations in the thickness of the lithosphere and viscosity of the mantle may be associated with continental roots. The effects of continental roots, or the tectosphere, on postglacial rebound are calculated using an axisymmetric flow model in which both the mantle and lithosphere are described as Newtonian fluids. Continental roots are shown to have a measurable effect on postglacial rebound, in particular, on the evolution of the peripheral bulge. Effects of continental roots are concentrated near the edge of the tectosphere, and thus often near ocean‐continent boundaries where many relative sea‐level histories are measured. The pattern and distribution of tectonic and seismic activity associated with deglaciation are affected by a tectosphere.