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Diatoms from Lake Toskaljarvi, Finland

Toskal diatoms

The image shows the siliceous skeletons of diatoms (tiny planktonic organisms) preserved in lake sediment, Lake Toskaljarvi, Finland. The sample was collected as part of a study of the variation in sedimentation of Arctic lakes and past climate change.

The image represents an area approximately 70 Ám wide.

Sample courtesy of Prof. Roy Thompson and Shirley Derrick, Geology and Geophysics, University of Edinburgh.

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