Open AccessMagnetoclimatology of aeolian sediments
Author(s) -
Evans M. E.
Publication year - 2001
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1046/j.0956-540x.2000.01317.x
Subject(s) - geology , loess , aeolian processes , loess plateau , sorting , physical geography , glacial period , interglacial , paleontology , china , plateau (mathematics) , quaternary , czech , geomorphology , earth science , soil science , geography , archaeology , mathematical analysis , linguistics , philosophy , mathematics , computer science , programming language
Summary Two models—which lead to signals of opposite sign—are currently at the forefront of magnetoclimatological debates. In the classic sites of the Chinese Loess Plateau, soil formation during interglacials leads to magnetic enhancement in the palaeosols. In other regions (Alaska, Siberia), magnetic susceptibility peaks during glacial intervals. By looking at the broader picture, the relationship between these two models can be clarified. A simple qualitative analysis based on density sorting then determines the regimes under which one or the other dominates. Published data from Siberia, China, the Czech Republic and elsewhere permit a certain degree of quantification, and lead to the conclusion that proximal sites are likely to manifest Alaskan/Siberian‐type magnetoclimatological patterns. Beyond a few hundred kilometres, however, distal sites will be dominated by Chinese‐type patterns.