hy co
volved quickly as outlets became ice-free and the earth deformed through The first attempt tomodel the tilt of Great Lakes shorelineswas by Gutenberg (1933) and much later by Broecker (1966), Brotchie elevation models (DEMs) has contributed to this work in that, once isobases are determined from fie...
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.3960 http://www.geology.wisc.edu/~davem/abstracts/08-13.pdf |
| Summary: | volved quickly as outlets became ice-free and the earth deformed through The first attempt tomodel the tilt of Great Lakes shorelineswas by Gutenberg (1933) and much later by Broecker (1966), Brotchie elevation models (DEMs) has contributed to this work in that, once isobases are determined from field observations of tilted shorelines, the entire region can be deformed until the shoreline is level and the ancient topography reproduced. This has been Available online at www.sciencedirect.com Quaternary Research 69 (20and Silvester (1969) and Walcott (1970). The development ofIntroduction Studies of the proglacial and postglacial lakes of the Great Lakes region have extended over more than a century (Spencer, 1888; Goldthwait, 1908; Leverett and Taylor, 1915). Prominent in this work was the tracing of lake shorelines that are now tilted relative to the present geoid by viscous deformation of the earth's mantle subsequent to ice sheet unloading. These early studies, based upon extensive field work, described how the drainages of the lakes adjusted as lake outlets became ice-free during deglaciationand the earth experiencedglacial isostatic adjustment. more realistic models of the glacial isostatic process on a spherical viscoelastic earth with realistic ice sheet loads and meltwater loading of the oceans has progressed steadily (Cathles, 1975; Clark et al., 1978; Wu and Peltier, 1983; Tushingham and Peltier, 1991; Milne et al., 1999). Although most of this work was concerned with sea level changes, some studies have focused on |
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