Seasonal climatic variation recorded by phytolith assemblages from the Baoji loess sequence in centr

来源 :中国科学:地球科学英文版 | 被引量 : 0次 | 上传用户:pppxulan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The results from the regressive relation of phytolith assemblages from modern surface soils and climatic parameter show variations in temperature and precipitation and evolution of vegetation pattern since the last 150000 a in the Baoji loess section. The
其他文献
期刊
There are three types of zircon (i.e. Zircon A, Zircon B and Zircon C) in the microgranitoid enclaves from the Qingtian granite. Zircon A is of the smallest I<sub
Coal samples from high arsenic coal areas have been analyzed by electron microprobe analyzer ( EMPA) , scanning electron microscopy with an energy dispersive X-
Based on the data of temperature changes revealed by means of various palaeothermometric proxy indices,it is found that the magnitude of temperature decrease be
The salinized sandy lands are the important reclaimable reserve wastelands in thesouth area of the Xinjiang Uygur Autonomous Region of China. But it is necessar
Studies have been done of the secondary chemico-viscous remanent magnetization (CVRM) produced in the oxidization and decomposition of high-purity crystal sider
The monthly means of north component X of geomagnetic field from 16 observatories during 1984-1988 were analyzed using the Sompi spectral analysis technique. Mo
On the magnetic susceptibility data of 30 sections covering the Loess Plateau, contour maps of susceptibility are drawn out for 5 time intervals including the l
Using a high resolution 14C chronology, Sl C values and organic carbon content, from loess/paleosol and peat profiles in China, we can demonstrate century scale
The high-resolution records of δ<sup>18</sup>O and snow accumulation variations from the Guliya ice core provide valuable data for research on climatic variati