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Glacial Isostasy, Sea-Level and Mantle Rheology (Paperback, Softcover reprint of the original 1st ed. 1991)
Loot Price: R8,607
Discovery Miles 86 070
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Glacial Isostasy, Sea-Level and Mantle Rheology (Paperback, Softcover reprint of the original 1st ed. 1991)
Series: NATO Science Series C, 334
Expected to ship within 10 - 15 working days
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by K. Lambeck, R. Sabadini and E. B08Chi Viscosity is one of the
important material properties of the Earth, controlling tectonic
and dynamic processes such as mantle convection, isostasy, and
glacial rebound. Yet it remains a poorly resolved parameter and
basic questions such as whether the planet's response to loading is
linear or non-linear, or what are its depth and lateral variations
remain uncertain. Part of the answer to such questions lies in
laboratory observations of the rheology of terrestrial materials.
But the extrapolation of such measurements from the laboratory
environment to the geological environment is a hazardous and vexing
undertaking, for neither the time scales nor the strain rates
characterizing the geological processes can be reproduced in the
laboratory. General rules for this extrapolation are that if
deformation is observed in the laboratory at a particular
temperature, deformation in geological environments will occur at a
much reduced temperature, and that if at laboratory strain rates a
particular deformation mechanism dominates over all others, the
relative importance of possible mechanisms may be quite different
at the geologically encountered strain rates. Hence experimental
results are little more than guidelines as to how the Earth may
respond to forces on long time scales.
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