Greifensee

Country:

Switzerland

Lake type:

glacial lake

Category: clastic varves

Elevation:

435 m asl

Max depth:

32 m

Surface area:

8.45 km2

Catchment area:

168.7 km2

Archive type:

lacustrine sediments

Author of images:

Michael Sturm

Reference:

Zolitschka B., 2007. Varved lake sediments. In: S. A. Elias (ed.), Encyclopedia of Quaternary Science. Elsevier, Amsterdam, pp. 3105-3114.

Link to reference or DOI:

http://dx.doi.org/10.1016/B0-44-452747-8/00065-X

Varved lake sediments from Greifensee (Switzerland). The upper 26 cm of this freeze core image display the history of cultural eutrophication through the formation of carbonaceous organic varves since 1930. Below 26 cm the productivity of the lake was lower, no oxygen depletion occurred near the lake floor and thus organic matter was not preserved. > max. resolution