Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/87486
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dc.contributor.authorHasterok, D.-
dc.contributor.authorChapman, D.S.-
dc.contributor.editorGupta, H.K.-
dc.date.issued2011-
dc.identifier.citationEncyclopedia of Solid Earth Geophysics, 2011 / Gupta, H.K. (ed./s), vol.Part 5, pp.662-668-
dc.identifier.isbn9789048187010-
dc.identifier.urihttp://hdl.handle.net/2440/87486-
dc.description.abstractThermal isostasy, that part of isostasy traceable to density differences being caused by temperature differences and thermal expansion of rock, is an important but underap-preciated condition in crustal geophysics. The condition/ process of thermal isostasy received much attention in oceanic regions with the discovery of plate tectonics and seafloor spreading. It was quickly recognized that systematic cooling of the lithosphere formed at a spreading ridge could explain the 3,000 m of seafloor subsidence away from a ridge. On continents, thermal isostasy effects are obscured by compositional isostasy, principally crustal thickness, which produces over 3,000 m of elevation effects. Recent analyses, however, have developed methods to adjust elevations for compositional effects. When those adjustments are made, there is a clear trend of increasing elevation of a continental province with surface heat flow – a confirmation of thermal isostasy. The magnitude of elevation differences between hot and cold continental regions is also about 3,000 m, comparable to thermal isostasy effects in marine areas. An excellent example of thermal isostasy effects is drawn from the North American Cordillera where Airy isostasy is unable to explain the elevation of the Cordillera terrains relative to stable shield areas. Instead, the hot upper mantle associated with current or recent back-arc activity, conveniently explains the 1,600 m of elevation difference that is observed.-
dc.description.statementofresponsibilityDavid S. Chapman, Derrick Hasterok-
dc.language.isoen-
dc.publisherSpringer-
dc.relation.ispartofseriesEncyclopedia of Earth Sciences Series-
dc.rights© Springer Science+Business Media B.V. 2014-
dc.source.urihttp://dx.doi.org/10.1007/978-90-481-8702-7_223-
dc.titleIsostasy, Thermal-
dc.typeBook chapter-
dc.identifier.doi10.1007/978-90-481-8702-7_223-
pubs.publication-statusPublished-
dc.identifier.orcidHasterok, D. [0000-0002-8257-7975]-
Appears in Collections:Aurora harvest 2
Earth and Environmental Sciences publications

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