ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
哈尔滨荒山黄土的成因:粒度、地球化学、磁化率、沉积和地貌特征的整合记录
投稿时间:2019-09-26  修订日期:2019-11-11
关键词:Huangshan loess  aeolian origin  Huangshan formation  Harbin
基金项目:国家自然科学基金(41871013,41601200);哈尔滨师范大学硕士研究生学术创新项目(HSDSSCX2019-06)资助。
作者单位E-mail
吴鹏 哈尔滨师范大学地理科学学院 2753742103@qq.com 
谢远云 哈尔滨师范大学寒区地理环境监测与空间信息服务黑龙江省重点实验室 xyy0451@hrbnu.edu.cn 
康春国 哈尔滨学院地理系  
迟云平 哈尔滨师范大学寒区地理环境监测与空间信息服务黑龙江省重点实验室  
魏振宇 哈尔滨师范大学地理科学学院  
孙磊 哈尔滨师范大学地理科学学院  
王嘉新 哈尔滨师范大学地理科学学院  
摘要点击次数: 234
全文下载次数: 0
摘要:
Origin of Huangshan loess in Harbin: Integrated evidence from grain size, geochemistry, magnetization, sedimentation and landform
      Harbin Huangshan loess is located at the eastern end of the Eurasian loess belt and adjacent to the eastern edge of the arid belt of the Asian continent. However, there is still a lack of unity in the formation of loess. Through field observation and analysis of grain size, geochemical composition of elements and magnetization of drilling cores in Harbin Huangshan, the genetic mechanism of Huangshan loess was discussed. The results show that the grain size composition of loess is mainly coarse silty (16 ~ 63 microns), and the grain size parameters (mean particle size, median particle size, standard deviation, deviation and peak state), grain size image characteristics (C-M, A-M and L-M), discriminant function and Kd value have no obvious indication of aeolian origin of loess. The major and trace element geochemical compositions of L1-L5 loess are not differentiated from the L5 secondary loess and the underlying fluvial and lacustrine sediments (Huangshan formation) under the loess-paleosols sequence. The magnetization of loess - paleosoil sequence in Huangshan shows the characteristics of periodic high and low variation, which is in good agreement with the typical aeolian loess section on the Loess Plateau. Combined with field observation, the loess of Huangshan has typical characteristics of eolian loess, such as uniform deposition and vertical joint development. In this paper, the aeolian origin of Huangshan loess in Harbin is determined by the method of integration. The grain size and geochemical indexes of loess as alternative indexes of loess genesis mechanism have some limitations. In practical application, they should be combined with field observation, magnetization and other alternative indexes to extract correct genesis mechanism information.
  查看/发表评论  下载PDF阅读器
Copyright©2008 《地球学报》编辑部 All Rights Reserved
Sponsored by:中华人民共和国自然资源部
Address:: 北京市西城区百万庄大街26号,中国地质科学院东楼317室 PostCode:100037 Tel:010-68327396 E-mail: diqiuxb@126.com