Preliminary results on the chemical composition of the sediment from Lake 20 (Antartica)
A sediment core from Lake 20 (Antartica) sliced into 1 cm sections has been collected and analysed by means of X-ray spectroscopy for 17 elements (Si, Al, Ca, K, Fe, Mg, Ti, S, P, Pb, Zn, Cu, Ni, Mn, Cr, Na, Cl). The chemical composition of the sediment has been found to be consistent with the known geochemical characteristics of the drainage basin. However, the chemical analysis point out that the sedimentation has changed in time. The observed variations along the core most probably are related to the climatic evolution of the area, to the consequent changes in the weathering processes, and possibly to an increase of the primary productivity of the lake, rather than to anthropogenic influences on the elements biogeochemical cycles.
Bibliographic Reference: Article: International Journal of Environmental Analytical Chemistry (1997)
Record Number: 199611555 / Last updated on: 1997-01-27
Original language: en
Available languages: en