Ice-wedge polygons and other periglacial phenomena in intermorainic sediments in the Öresund area, southern Sweden

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Abstract
Intermorainic ice-wedge casts from the island of Ven in the middle of the Öresund strait and at Glumslöv on the mainland in the province of Skåne (Scania) are described. The ice-wedge casts are situated above the ‘lower brick clay’, a till deposited by a Norwegian ice-stream which preceded the main phase of the Weichselian glaciation, in glaciofluvial delta sediments called the Glumslöv sediments. These sediments, which at Strandnäs are overlain by two till beds, one of north-eastern facies (North-East till) and one of Baltic facies (Low Baltic till), contain many large ice-wedge casts. At one place they have formed a visible, well-developed polygonal net. Many of these ice-wedge casts have been dislocated by ice pressure from the SE. Cryoturbatic structures occur in the immediate vicinity of the ice-wedge casts and in the infilling material of the casts. Two laminated soil-wedge casts, one on the island of Ven and one at Sundvik on the mainland, containing laminae of sand and silt, are described and their genesis is discussed.

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