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1935 H. Baulig Changing Sea Level 4 We have to consider..eustatic movements, resulting from changes in the capacity of the oceanic basins, a kind of eustatism which might be called deformational.

1954 W. D. Thornbury Princ. Geomorphol. vi. 142 Diastrophic eustatism is change of sea level resulting from variation in capacity of the ocean basins, whereas glacio-eustatism refers to changes in sea level produced by withdrawal or return of water to the oceans.

1970 R. J. Small Study of Landforms xii. 425 Successive eustatic falls, independent of those attributable to glacial eustatism, occurred either as the ocean basins were deepened and/or the continental land areas raised en masse.