Articles | Volume 69, issue 1
E&G Quaternary Sci. J., 69, 33–53, 2020
E&G Quaternary Sci. J., 69, 33–53, 2020
Research article
25 May 2020
Research article | 25 May 2020

The genesis of Yedoma Ice Complex permafrost – grain-size endmember modeling analysis from Siberia and Alaska

Lutz Schirrmeister et al.

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Cited articles

Anderberg, M. R.: Cluster Analysis for Applications, Academic Press, New York, p. 376, ISBN 0120576503, 1973. 
Andreev, A. A., Schirrmeister, L., Tarasov, P. E., Ganopolski, A., Brovkin, V., Siegert, C., and Hubberten, H.-W.: Vegetation and climate history in the Laptev Sea region (arctic Siberia) during Late Quaternary inferred from pollen records, Quaternary Sci. Rev., 30, 2182–2199,, 2011. 
Ashastina, K., Schirrmeister, L., Fuchs, M. C., and Kienast, F.: OSL age determination and sedimentological characteristics of the Batagay thaw slump, Northeastern Siberia, PANGAEA,, 2017a. 
Ashastina, K., Schirrmeister, L., Scheidemann, D., Fuchs, M. C., and Kienast, F.: Grain size distribution of the Batagay thaw slump, Northeastern Siberia, PANGAEA,, 2017b. 
Ashastina, K., Kuzmina, S., Rudaya, N., Troeva, E., Schoch, W. H., Römermann, C., Reinecke, J., Otte, V., Savvinov, G., Wesche, K., and Kienast, F.: Woodlands and steppes: Pleistocene vegetation in Yakutia's most continental part recorded in the Batagay permafrost sequence. Quaternary Sci. Rev., 196, 38–61,, 2018. 
Short summary
Late Pleistocene Yedoma deposits of Siberia and Alaska are prone to degradation with warming temperatures. Multimodal grain-size distributions of >700 samples indicate varieties of sediment production, transport, and deposition. These processes were disentangled using robust endmember modeling analysis. Nine robust grain-size endmembers characterize these deposits. The data set was finally classified using cluster analysis. The polygenetic Yedoma origin is proved.