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RESEARCH PRODUCT

Deglaciation history of Latvia

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This chapter discusses the deglaciation history of Latvia. The earliest deglaciation schemes of Latvia were based entirely on morphological features. The spatial distribution of glacial landforms, with crests transverse to glacier movement combined with radiocarbon dates and biostratigraphical evidence, have provided the principal data for the reconstruction of the deglaciation process from the mid-1960s until the present. A deglaciation history should be based on multiple criteria. Attention should be paid to the identification of ice-marginal formations, and complex studies are also needed, including the investigation of the spatial distribution and internal composition of subglacial landforms that originated during the reactivation and recession of ice lobes and glacier tongues. The results of geospatial analyses and geological structure of glacial terrain should be supported by palaeoclimatic and environmental reconstructions and age determination by different methods of absolute age determination.