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对西峰和西安红粘土剖面作了磁性地层研究,表明黄土高原风成堆积和东亚古季风的发育至少自6.SMaBP前开始,青藏高原在此时也许达到了有意义的高度;初步重建了磁化率变化反映的晚第三纪东亚夏季风气候的时间序列,6.5～2.5Ma红粘土磁化率值的逐步升高可能与青藏高原的隆升过程密切相关.黄土高原的风尘堆积速率在距今3.2Ma以后显著增大,反映了冰量对东亚冬季风和风尘堆积的影响.中国黄土高原风成红粘土序列记录的晚第三纪东亚古季风变迁可视为青藏高原隆升、太阳辐射与全球尤其是北半球冰量变化等多种因素相互作用的结果.
The magnetostratigraphic studies on the Xifeng and Xi’an red clay sections show that the wind accumulation in the Loess Plateau and the development of the East Asian monsoon have started at least before 6.SMaBP and the Qinghai-Xizang Plateau may reach a significant height at this time. The initial magnetization The time series of the late-Tertiary East Asian summer monsoon climate reflected by the rate change may be closely related to the uplift of the Qinghai-Tibet Plateau during the 6.5 ~ 2.5 Ma red clay susceptibility. The dust accumulation rate in the Loess Plateau ranges from 3.2 Ma And then significantly increased, reflecting the impact of ice volume on the East Asian winter monsoon and dust accumulation.The paleoclimatic changes of East Asia in the late Cretaceous recorded by the windward red clay sequence in the Loess Plateau of China can be regarded as the uplift of the Qinghai-Tibet Plateau, It is the result of many factors such as the change of ice volume in the Northern Hemisphere.