Analyses of a Holocene soil/loess sequence in Southern Siberia ...

• Main Authors: Kravchinsky, Vadim, Langereis, Cornelis G, Walker, Shawn D, Dlusskiy, Konstantin G, White, Dustin
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: Outcrop sample; North Atlantic; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.820135; https://doi.pangaea.de/10.1594/PANGAEA.820135

We conducted a high-resolution study of a unique Holocene sequence of wind-blown sediments and buried soils in Southern Siberia, far from marine environment influences. This was accomplished in order to assess the difference between North Atlantic marine and in-land climate variations. Relative wind strength was determined by grain size analyses of different stratigraphic units. Petromagnetic measurements were performed to provide a proxy for the relative extent of pedogenesis. An age model for the sections was built using the radiocarbon dating method. The windy periods are associated with the absence of soil formation and relatively low values of frequency dependence of magnetic susceptibility (FD), which appeared to be a valuable quantitative marker of pedogenic activity. These events correspond to colder intervals which registered reduced solar modulation and sun spot number. Events, where wind strength was lower, are characterized by soil formation with high FD values. Spectral analysis of our results ... : Supplement to: Kravchinsky, Vadim; Langereis, Cornelis G; Walker, Shawn D; Dlusskiy, Konstantin G; White, Dustin (2013): Discovery of Holocene millennial climate cycles in the Asian continental interior: Has the sun been governing the continental climate? Global and Planetary Change, 110(C), 386-396 ...