Article contents
Review of recent developments in aeolian dust signals of sediments from the North Pacific Ocean based on magnetic minerals
Published online by Cambridge University Press: 18 July 2019
Abstract
The North Pacific Ocean (NPO) has received abundant aeolian dust transported by westerlies from the Asian inland. The aeolian components preserved in NPO sediments record information on palaeoclimatic and palaeoenvironmental changes in Asian source areas at different timescales. Previous studies have systematically investigated the source–sink effect of aeolian dust using the sedimentology, geochemistry, isotope and magnetic methods. In this study, we focus more on recent developments of aeolian signals in NPO sediments obtained by magnetic approaches. Generally, aeolian components contain a mixture of magnetite, maghemite, hematite and goethite of different origins. Magnetic properties (mineral category, concentration and particle size) of these minerals are modulated primarily by climatic/environmental conditions in source areas and sorting effects during the transportation process. Compared with the other methods, magnetic measurements have the advantages of non-sample destruction, high sensitivity and high efficiency. Finally, future studies are also discussed to address the importance of magnetism for tracing the dynamic transportation processes of the aeolian dust.
- Type
- Review Article
- Information
- Geological Magazine , Volume 157 , Special Issue 5: Asian dust from land to sea: processes, history and effect , May 2020 , pp. 790 - 805
- Copyright
- © Cambridge University Press 2019
References
- 9
- Cited by