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Abstract
The Skallhult plateau is situated in an cast-westerly pass of Hökensås, a mountain ridge that separates the Vätter and Tida basins on the northern border of the South Swedish Highlands. The plateau has formerly been interpreted as an ice marginal delta built up in the Baltic Ice Lake (Munthe 1940) or in a local ice lake which covered the Vätter and Tida basins south of the ice margin (cf. Munthe 1910 and Nilsson 1939, 1953, 1968). These interpretations have been forwarded without any descriptions or proofs as regards morphology and stratification.
According to results of morphological investigations presented in this paper the Skallhult plateau was formed by subglacial flow which penetrated the ice surface during deglaciation and built up a supraaquatic delta or outwash plain surrounded by ice. Meltwater flowed westwards over this plain from the Vätter basin to the Tida basin and was probably drained into crevasses of stagnated ice masses.
A deposit of the same type has also been found ca. 30 km farther to the south on the same ridge (Norrman 1963).
The results of these investigations call for a revision of the deglaciation history of this region, presented by Nilsson (1953, 1968), which is entirely based on the presumed existence of consecutive ice lake stages.