110
Land-Ocean Svstems in the Siberian Arctic: Dynamics and History
0 . 4
0 . 25
0 . 2
Element concentration in ice-rafted sediments (IRS)
<> <>
•
• •
0
o 5
o 6
•
SW Laplev Sea
0 SE Laptev Sea
•
<> Prohv Vllkltskogo
..
0
o 0
0
00
0 0
00
0
DO
07
08
09
1
t 1
(K + RE E • 10') I AI
"Granite I Crust Signal"
1 2
Figure 5: Regional differences in the Major and minor element composition of ice rafted seiments from the NW
and SE Laptev Sea. The distinct differences are caused by different IRS source areas. The NW Laptev Sea is
influenced by the discharge of rivers draining the Putorana basalt plateau. The geochemical signature of
sediments, IRS and suspended matter from the SE Laptev Sea is a mixture of a large number of different
lithologies (Lena river runoff plus coastal erosion) that resembles the signature of average weathered earth crust.
Acknowledgements
This work was carried out within the framework of the German-Russian cooperative program
"Laptev Sea System" funded by the Russian and German ministries for science and technology.
Dr. H. Kassens and Dr. I. Dmitrenko are greatly acknowledged as chief scientists during the
expedition into the Laptev Sea. We wish to thank the captain and the crew of the Russian
icebreaker Kapitan Dranitzyn for their support. We also thank our Russian and German
colleagues, especially Konstantin Tyshko who helped us to walk safely on thin ice. Dr. K.
Kremling and Dr. M. Kriews are thanked for valuable comments on the manuscript.
References
Barrie, L. A., D. Gregor, B. Hargrave, R. Lake, D. Muir, R. Shearer, B. Tracey and T. Bidleman (1992) Arctic
contaminants: sources, occurrence and pathways. Sci. Tot. Environ., 122, 1-74.
Behrends, M., B. Peregovich and R. Stein (1996) Terrigenous sediment supply into the Arctic Ocean: Heavy
mineral distribution in the Laptev Sea. Ber. Polarforsch., 212, 37-42.
Cauwet, G. and I. Sidorov (1996) The biogeochemistry of Lena river: organic carbon and nutrients distribution.
Mar. Chern., 53, 211-227.
Chester, R. (1990) Marine geochemistry. Unwin Hyman Ltd, London.
Dmitrenko, I., V. Gribanov, P. Golovin and H. Kassens (1996) Hydrological causes for sea-ice transport of river
discharge. Terra Nostra, 9, 1-2.
Bicken, H., E. Reimnitz, V. Alexandrov, T. Martin, H. Kassens and T. Viehoff (1996) Sea-ice processes in the
Laptev Sea and their importance for sediment export. - Cont. Shelf Res., 12,2,205-233.
Garnier, J.-M., J.-M . Martin, J.-M. Mouchel and K. Sioud (1996) Partitioning of trace metals between the
dissolved and particulate phases and particulate surface reactivity in the Lena River estuary and the Laptev Sea
(Russia). Mar. Chern., 53, 269-283.
Land-Ocean Svstems in the Siberian Arctic: Dynamics and History
0 . 4
0 . 25
0 . 2
Element concentration in ice-rafted sediments (IRS)
<> <>
•
• •
0
o 5
o 6
•
SW Laplev Sea
0 SE Laptev Sea
•
<> Prohv Vllkltskogo
..
0
o 0
0
00
0 0
00
0
DO
07
08
09
1
t 1
(K + RE E • 10') I AI
"Granite I Crust Signal"
1 2
Figure 5: Regional differences in the Major and minor element composition of ice rafted seiments from the NW
and SE Laptev Sea. The distinct differences are caused by different IRS source areas. The NW Laptev Sea is
influenced by the discharge of rivers draining the Putorana basalt plateau. The geochemical signature of
sediments, IRS and suspended matter from the SE Laptev Sea is a mixture of a large number of different
lithologies (Lena river runoff plus coastal erosion) that resembles the signature of average weathered earth crust.
Acknowledgements
This work was carried out within the framework of the German-Russian cooperative program
"Laptev Sea System" funded by the Russian and German ministries for science and technology.
Dr. H. Kassens and Dr. I. Dmitrenko are greatly acknowledged as chief scientists during the
expedition into the Laptev Sea. We wish to thank the captain and the crew of the Russian
icebreaker Kapitan Dranitzyn for their support. We also thank our Russian and German
colleagues, especially Konstantin Tyshko who helped us to walk safely on thin ice. Dr. K.
Kremling and Dr. M. Kriews are thanked for valuable comments on the manuscript.
References
Barrie, L. A., D. Gregor, B. Hargrave, R. Lake, D. Muir, R. Shearer, B. Tracey and T. Bidleman (1992) Arctic
contaminants: sources, occurrence and pathways. Sci. Tot. Environ., 122, 1-74.
Behrends, M., B. Peregovich and R. Stein (1996) Terrigenous sediment supply into the Arctic Ocean: Heavy
mineral distribution in the Laptev Sea. Ber. Polarforsch., 212, 37-42.
Cauwet, G. and I. Sidorov (1996) The biogeochemistry of Lena river: organic carbon and nutrients distribution.
Mar. Chern., 53, 211-227.
Chester, R. (1990) Marine geochemistry. Unwin Hyman Ltd, London.
Dmitrenko, I., V. Gribanov, P. Golovin and H. Kassens (1996) Hydrological causes for sea-ice transport of river
discharge. Terra Nostra, 9, 1-2.
Bicken, H., E. Reimnitz, V. Alexandrov, T. Martin, H. Kassens and T. Viehoff (1996) Sea-ice processes in the
Laptev Sea and their importance for sediment export. - Cont. Shelf Res., 12,2,205-233.
Garnier, J.-M., J.-M . Martin, J.-M. Mouchel and K. Sioud (1996) Partitioning of trace metals between the
dissolved and particulate phases and particulate surface reactivity in the Lena River estuary and the Laptev Sea
(Russia). Mar. Chern., 53, 269-283.