Essays about: "Grinding grooves"
Found 1 essay containing the words Grinding grooves.
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1. The mysterious grinding grooves
University essay from Uppsala universitet/Institutionen för arkeologi och antik historiaAbstract : On the Island of Gotland, there is a phenomenon called grinding grooves, Sw. slipskåror. They occur in bedrock and boulders. About 3600 are known on the island today and having a length of less than half a meter to over one meter. READ MORE
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