地质力学学报2017，Vol.23Issue(4)：602-611,10.
内蒙古东南缘晚第四纪以来的气候环境演化
LATER QUATERNARY CLIMATIC AND ENVIRONMENTAL CHANGES IN THE SOUTHEASTERN MARGIN OF INNER MONGOLIA
摘要
Abstract
A multi-proxy record including grain size, magnetic susceptibility and trace element from the fluvial-lacustrine Linjiadian section in the upper reaches of Xilamulun River, situated in the southeastern margin of Inner Mongolia, has been proposed to reconstruct the environmental and climatic changes since the last 36 ka BP. The results show that, during 35. 23 to 25. 15 ka BP, the late stage of Marine Isotope Stage 3 (MIS 3), warm and wet climate conditions dominated this region accompanied by the trend of regional drought climate. The following period, approximately 25. 25~11. 35 ka BP, corresponding to MIS 2, was characterized by frequent fluctuations in climate change. The driest and coldest interval was recognized as the last glacial maximum ( LGM) , ranging from 22. 25 to 18. 47 ka BP, and two minor climate optimums occurred in 18. 47~16. 24 ka BP and 14. 72~11. 13 ka BP. The Holocene commenced at about 11. 13 ka BP with the transition to a relatively humid and warm climate. Regional comparisons suggest a roughly synchronous pattern of climate change and variation in the East Asian summer monsoon ( EASM) , attributing to the force of the northern hemisphere summer insolation and ice volume. In addition, the millennial-scale EASM fluctuation had some influence on the Heinrich ( H ) , and the Younger Dryas ( YD ) , indicating the relevance to the rapid Atlantic meridional overturning circulation ( AMOC ) oscillations.关键词
刘家店河湖相剖面/晚第四纪/古气候记录/内蒙古东南缘Key words
fluvial-lacustrine deposits/late Quaternary/palaeoclimatic records/southeastern margin of Inner Mongolia分类
天文与地球科学引用本文复制引用
田飞,王永,迟振卿,刘瑾,江南,汤文坤,姚培毅..内蒙古东南缘晚第四纪以来的气候环境演化[J].地质力学学报,2017,23(4):602-611,10.基金项目
中国地质调查局项目 (DD20160345, 121201102000150010-07, 1212011120115) （DD20160345, 121201102000150010-07, 1212011120115）
