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Xiaoyong Wang (Email: wangxy@nju.edu.cn) Huayu Lu (Email: huayulu@nju.edu.cn )

Rock magnetic investigation of loess deposit in Eastern Qingling Mountains and its paleoclimatic implications. Xiaoyong Wang (Email: wangxy@nju.edu.cn) Huayu Lu (Email: huayulu@nju.edu.cn ) School of Geographic and Oceanographic Sciences, Nanjing University. 2013-11-02.

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Xiaoyong Wang (Email: wangxy@nju.edu.cn) Huayu Lu (Email: huayulu@nju.edu.cn )

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  1. Rock magnetic investigation of loess deposit in Eastern Qingling Mountains and its paleoclimatic implications Xiaoyong Wang (Email: wangxy@nju.edu.cn) Huayu Lu (Email: huayulu@nju.edu.cn) School of Geographic and Oceanographic Sciences, Nanjing University 2013-11-02

  2. QinglingMts - Natural geography boundary between temperate and subtropical China

  3. The images is adapted from http://image.baidu.com Over ten thousand of lithic artifacts , including some buried in loess deposits Paleoenvironment for early human In East QinlingMts?

  4. Winter Monsoon Magnetic Proxy? Summer Monsoon

  5. To the North, Chinese Loess Plateau S1 S2 S3 S4 S5 Yes （An, et al., Maher et al., Zhou et al.） Stratigraphic interpretation Susceptibility

  6. To the South, middle and lower Yangtze area Be cautions （Hu, et al.,2009 ;Zhang et al., 2007） may be affected by post-depositional hydromorphic processes

  7. 146. 4 ±12.3 137.0±13.4 151.6±4.9 202.2±6.9

  8. Fe3O4 -Fe2O3  -Fe2O3 Fe00H Iron sulfide（Oldfield, Liu Qingsong) personal communication）

  9. Hard magnetic mineral and soft magnetic mineral coexist

  10. North South Should be Higher, But show low value. Why?

  11. Input of low magnetic dust? NO!

  12. Hard magnetic Minerals More Less

  13. Luochuan : precipitation590 mm/yr evaporation1550mm/yr Luonanprecipitation 706 mm/yr evaporation1345 mm/yr olive-green impregnations present Iron sulfide Excced the threshold Reduction environment Ferrimagntic mineral to Hard-magnetic minerals 650mm Balsam et al.,2004, EPSL Lower MS value

  14. Paleoenvironmentfor early human In East QinlingMts? a higher magnetic lf and fd are associated with paleosols and lower values associated with loess units

  15. FM particles formed during pedogenic process resulted the enhancement of MS MS can be employeed as paleclimate proxy, but should be cautions

  16. East Summer monsoon Stronger Weaker Relative warmer and stable environement

  17. Research Interest: Environmental magnetism of eolian deposits U-Pb dating of detrital zircon grains in eolian deposits Adress: Dr. Wang, Xiaoyong School of Geographic and Oceanographic Sciences Nanjing University Xianlin Campus 163 Xianlin Boulevard, Qixia District, Nanjing 210023, China email: wangxy@nju.edu.cn phone: 86-25-89681062

  18. Thanks

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