地理科学 ›› 1987, Vol. 7 ›› Issue (3): 231-237,295.doi: 10.13249/j.cnki.sgs.1987.03.231

• 论文 • 上一篇    下一篇

辽东半岛黄土的初步研究

焦亚宁, 魏成凯, 符文侠   

  1. 国家海洋局海洋环境保护研究所 大连
  • 出版日期:1987-05-20 发布日期:1987-05-20

A STUDY ON THE CHARACTERISTICS OF LOESS IN THE LIAODONG PENINSULA

Jiao Yaning, Wei Chengkai, Fu Wenxa   

  1. Institute of Marine Environmenta(?) Protections, State Oceanic Administration, Dalian
  • Online:1987-05-20 Published:1987-05-20

摘要: 辽东半岛黄土的分布具有明显的坡向性.其粒度组成、矿物和化学成分等岩性特征,与黄河中游的黄土基本一致。上部灰黄色粉土层与马兰黄土相当;下部桔黄和红褐色土层与离石黄土相似。它是在干凉气候条件下,由西北风搬运、沉积而成,并具有水的改造作用痕迹.

Abstract: The loess accumulated in the Liaodong Peninsula is a special type of loess in China.On the basis of the distribution,stratum sections and material composition of the loess in the peninsula,the material sources and formation mechanism of the loess are discussed.Acerding to the data of 14C dating and thermoluminescence,the age and the sedimentary rates of the loess are obtained.The loess in the peninsula is closely relative with the loess in Chifeng of the Neimonggol Autonomous Region.They both are silt accumulation transported by wind from inland deserts in the same period of the Pleistocene.Bat owing to the influence of special climate conditions,some loess, by the surface water,oecured a series of changes.The study on the loess in the peninsula makes it possible to further understand the palaeogeography and palaeoclimaete in the Pleistocene in the Liaodong Peninsula.