摘要
文章根据吉林双辽地区风沙堆积物中的Fe3+/Fe2+值,计算了风沙堆积时的古温度及其变化,结合堆积物的定年数据,建立了该区76.9±6.0～17.8±1.4kaB.P.期间温度波动旋回。结果表明:这一地质时期吉林双辽地区年均温度变化于1.13℃～8.70℃之间,整体较现在为低,应为末次冰期影响所致。该研究得到的松辽平原末次冰期的温度数据,为系统建立松辽平原晚更新世古气候年表提供了重要基础资料。
Paleotemperature has been calculated in Shuangliao area of Jilin based on Fe^(3+)/Fe^(2+) values in the aeolian sediments of this region. Combining with the data of thermoluminescence dating, the fluctuation cycle of paleotemperature has been established in this region from 76.9±6.0 ka B.P. to 17.8±1.4 ka B.P. The results indicate that the paleotemperature of this region changes greatly with the minimum value 1.13℃ and the maximum value 8.70℃, but most values are lower than that of today. It can be concluded from the lower paleotemperature and age data that this region was greatly influnced by the last glacier period. This research quantitatively presents the temperature data of the last glacial and provides important information of Late Pleistocene climate condition in Songliao Plain.
出处
《地理科学》
CSCD
北大核心
2004年第5期616-619,共4页
Scientia Geographica Sinica
