摘要
用MAT—251型同位素气体质谱仪对北京周口店洞穴石笋进行δ(18)O、δ(13)C．δD的稳定同位素的测定，并用α谱仪对石笋进行了铀系不平衡年龄测定。用同位素古温度测温法计算出不同地质年龄的古温度，得出距今8～5万年间该地区古温度的演化规律，并与同期渤海的海平面变化曲线进行对比，发现它们的海平面与古温度变化曲线十分一致，说明该地区8～5万年间海平面的变化主要是由古温度的变化引起的。
The stable isotopes of carbon, hydrogen and oxygen in stalagmites from the Zhoukoudian Cave,Beijiop were analyzed using the stable isotope geochemical method. The stalagmite samples fromZhoukouian were dated by the U series method. The records of paleoclimate evolution in Zhoukoudian[ (8 - 5) ×10 4a] have been obtained, and are compared with the curves of sea-level change for the Bo-hai Gulf, China.
出处
《地质地球化学》
CSCD
北大核心
1999年第1期95-99,共5页
Geology-Geochemistry
基金
国家自然科学基金!49872061
