Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Marine Geology & Quaternary Geology》 2004-03
Add to Favorite Get Latest Update

THE VARIATION OF CaCO_3 CONTENT IN FOUR PROFILES FROM THE NORTH OF CHINA AND THE RECONSTRUCTED PALEO-PRECIPITATIONS

ZHAO Jin-hui~(1),LI Dong-ping~(2),LU Hua-yu~(1),ZHANG Xiao-ye~(1),LI Yang~(1) ,WANG Dan~(1) ronment,CAS,Xi'an 710075,China; 2 Seismological Bureau of Zhejiang Province,Hangzhou 310013,China)  
CaCO_(3) content decreases gradually in each stratum of the four profiles from arid and half arid area from west to east in the north of China.The content curves of CaCO_(3) in Keerqin,Yanchang and Panzishan profiles show that a peak of CaCO_(3) content appears in some depth of each stratum of paleosol,and the top and bottom CaCO_(3) content is higher than that in the middle of the paleosol of each profile,while CaCO_(3) content in Talede,Xinjiang is higher in the middle and at the bottom.Besides the climate factor (precipitation affects deposition and transport of CaCO_(3) ),there are some factors of geographical location and material source.Moreover,CaCO_3 content of loess chemical material and deposition depth manifest loess material transport and enrichment,thus through CaCO_(3) content,paleo-precipitation during paleosol development can be resumed in some areas,to let us know weathering soil effect and climate and environment evolvement.
【Fund】: 中国科学院知识创新重要方向性项目(KZCX2 SW 118);; 国家重点基础发展研究规划项目(G2000048703);; 黄土与第四纪地质国家重点实验室开放基金资助项目(SKLLQG0320;SKLLQG0422)共同资助
【CateGory Index】: P532
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved