Forebulge

In geology, a forebulge is a flexural bulge in front of a load on the lithosphere. This load causes the lithosphere to flex by depressing the plate beneath it. Because of the flexural rigidity of the lithosphere, the area around the load is uplifted by a height that is 4% of that of the depression under the load. This load and resulting flexure pl...
Found on http://en.wikipedia.org/wiki/Forebulge

Forebulge

An area farther from the ice than the peripheral depression which is bowed slightly upward by the lateral displacement of deformable material in the asthenosphere, beneath the rigid lithosphere. During deglaciation the forebulge will migrate in towards the glaciated region as the asthenosphere reacts to the removal of load.
Found on https://www.encyclo.co.uk/local/20131
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