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A sequence of lacustrine and alluvial sediments represented by stratified sand, silt and, rarely, clay over 20 m-thick is widespread in the Anykščiai and Vilnius districts in Eastern and South-eastern Lithuania, respectively. These sediments are exposed only in Eastern Lithuania, in the Šventoji River valley and its tributaries. Here they overlie Devonian bedrock and are overlain by the Pleistocene...