摘要
1998年在多伦首次发现了全新世地层间的冰缘融冻构造 ,主要有融冻作用形成的揉皱、砂孔和砂峰等 ,其形成时代为全新世晚期的新冰期 .探讨了该区融冻构造的形成机制和气温条件 ,认为当时的年均气温为 - 2℃ .它的发现不仅为了建立本区第四纪地层层序 ,而且为确定全新世北方冰缘冻土的南界及研究内蒙古高原全新世古气候环境的演变提供了重要的科学依据 .
The frost riving structure in the Holocene was discovered in Duolun in 1998.There are a wrinkle,some sand-holes and sand-hills,which were formed by freeze-thaw in Late Holocene.The formed dynamic and temperature condition were discussed in this paper.It was thought that its formed temperature is -2℃.This discovery may be useful not only for the setting up of the stratigraphic sequence of Quaternary in this district,but also for being an important evidence for the identification of the southern boundary of the northern ice-front climafrost,and also for study of the evolution of paleoclimate and environment in Inner Mongolia plateau in Holocene.
出处
《天津城市建设学院学报》
CAS
2001年第1期61-64,共4页
Journal of Tianjin Institute of Urban Construction
关键词
内蒙古
冰缘
融冻构造
全新世
the lnner Mongolia Autonomous Region
Duolun
frost riving structure of ice-front
Holocene
