地理科学 ›› 1981, Vol. 1 ›› Issue (2): 163-170.doi: 10.13249/j.cnki.sgs.1981.02.163

• 问题讨论 • 上一篇    下一篇

松辽平原冰缘期的划分

孙建中   

  1. 吉林省地质科学研究所
  • 出版日期:1981-03-20 发布日期:1981-03-20

QUATERNARY PERIGLACIAL STAGES OF THE SONGLIAO PLAIN

Sun Jianzhong   

  1. Institute of Geological Sciences, Jilin Province
  • Online:1981-03-20 Published:1981-03-20

摘要: 冰缘学的研究近年来比较活跃。冰缘现象种类很多,其中对于分期比较有效的是冰缘构造现象。这种构造在松辽平原颇为常见。

Abstract: Periglacial structures are widely distributed at Songliao plain in the Northeastern Region of China.Their common forms are:ice wedges,involutions and solifluctions.According to stratigraphical and chronological data,The periglacial stages have been divided as following: 1.Baitushan periglacial stage,characterized by the involutions developed in Baitushan formation.Paleomagnetic dating 3.4—3.0—1.7m.y.B.P. 2.Huangshan periglacial stage,characterized by the involutions and ice wedges developed in Huangshan formation.Paleomagnetic dating 1.2~1.0— 0.75m.y.B.P. 3.Donggang periglacial stage,characterized by the involutions developed in Donggang formation.Thermo-luminescent dating:0.2—0.15m.y.B.P. 4.Guxiangtun periglacial stage,characterized by the ice wedges and involutions developed in Guxiangtun formation and by the cold-loving fauna and flora:Mammuthus-Coelodonta fauna and dark coniferous forest flora and permafrost fauna in the same formation.C14 dating:70,000—10,000 years B.P. 5.Tailitu periglacial stage,characterized by the solifluction found near Tailitu village.It might occur in early Holocene. 6.Modern periglacial stage,characterized by the ice wedges and involutions filled by black soil.This stage might be corresponding to the little ice age.