Varves (annually laminated sediments) are one of the most important terrestrial archives of past environments with an annual- to century-scale resolution (Brauer 2004). Sediments from small and deep maar lakes have great potential in this respect due to their specific conditions for the formation and preservation of the laminated sediments (Zolitschka and Negendank 1996; Zolitschka et al. 2000; Mingram et al. 2004).
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