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14C and TL dating as a method of establishing the origin of kettle-like hollows

Stankowski W.

Geochronometria

2001

Vol. 20

103-106

Small circular hollows are very common in the glacial topography of NW Poland. Among them there are also some of meteorite origin. An important example of impact craters exists in the Morasko Meteorite Natural Reserve. The 14 C and Luminescence datings are very helpful in establishing their origin. The last ice sheet retreat and permafrost degradation created kettle-like hollows around the Morasko Hill. Organic infilling started in them between 14,000 - 10,000 BP. The Morasko meteorite shower fell between 5000 - 3500 BP. The craters origins and young hollow bottom organic infillings then started. On the Great Poland Lowland there are other potential areas with forms connected to meteorite falls, the such as Oborniki - Obrzycko area and probably in the so called KKR object fron the south-east part of Great Poland Lowland.