description Köpingsåsen Overview
Köpingsåsen is an esker in Södermanland, Sweden, situated beside Lake Aspen. The ridge forms the western edge of the lake in the local landscape and then disappears beneath the surrounding clay soils. As an esker, it records sediment deposited by meltwater flowing through or beneath glacial ice, while its present relationship with Lake Aspen shows how glacial ridges can remain partly buried in later sediments and continue to shape local topography.
help Köpingsåsen FAQ
What is Köpingsåsen?
Köpingsåsen is an esker in Södermanland, Sweden — a long ridge of sand and gravel deposited by meltwater flowing beneath or within a glacier. It runs beside Lake Aspen and forms the lake's western edge.
Where is Köpingsåsen located?
It lies in the Södermanland region of Sweden, immediately next to Lake Aspen. After framing the lake, the ridge disappears beneath the surrounding clay soils.
Can you trace the whole Köpingsåsen ridge on the ground?
Not entirely — it's visible along the western edge of Lake Aspen, but then it vanishes under the clay soils of the surrounding plains. This masking by post-glacial clay is very common for Swedish eskers.
How did the Köpingsåsen esker form?
It formed when meltwater running in a tunnel at the base of the Scandinavian ice sheet deposited sediment that stayed behind as a ridge after the ice melted. Eskers like Köpingsåsen therefore record the ancient path of that subglacial stream.
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