作　　者： ; ; ;

机构地区： 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室

出　　处： 《地理学报》 2011年第7期867-884,共18页

摘　　要： 近年来,随着多种可对冰川地形进行直接定年的测年技术的发展与应用,中国第四纪冰川研究取得了新进展,较为突出的是获得了大量与地貌地层关系相符的年代学资料、建立了冰川演化若干典型范例以及进一步确立了青藏高原构造隆升与冰川发育的耦合关系。中国第四纪冰川演化序列与海洋氧同位素阶段(Marine Oxygen Isotope Stage,MIS)比较经历了2000年、2002年两次立案与改进。笔者基于近年来新测得的年代学数据、已建立的冰川演化序列以及青藏高原隆升与冰川发育的耦合关系等新的研究资料,提出了中国冰期与海洋氧同位素阶段比较的2011年改进方案,包括近百万年冰川变化的15个特征时段及其对应的时间与中国冰期名称等信息。 In the past two decades,dating techniques,including cosmogenic radionuclide （CRN） or terrestrial in situ cosmogenic nuclides （TCN）,optically stimulated luminescence （OSL）,electron spin resonance （ESR）,which can potentially and directly determine the ages of glacial landforms and sediments have been refined and widely applied.These techniques in combination with other dating methods,such as lichenometry,14 C and thermoluminescence （TL） dating,have promoted further understanding of Quaternary glaciations in China,and some new progress has been achieved.For example,abundant dating data,which are consistent with the stratigraphy and geomorphology have been determined;glacial sequences constrained by numerical ages in the Qinghai-Xizang Plateau and bordering mountains have been obtained;the coupling relationship between the uplift of the Qinghai-Xizang Plateau and the glacier evolution in Quaternary has been identified.An improved comparative schema between Quaternary glaciations and marine oxygen isotope stage （MIS） has been proposed on the basis of the available data.The improved comparative schema includes 15 special stages and sub-stages during the last 1 million years.Information,such as time （ka）,MIS,Chinese glaciations are accessible.The authors expect more comments and suggestions on the improved schema.

关 键 词： 第四纪冰川 中国冰期 海洋氧同位素阶段 中国西部 中国东部

领　　域： [天文地球] [天文地球]