摘要
通过加速器质谱方法，精确测定了南极燕窝湖沉积物陆生苔藓^（１４）Ｃ年龄，获得该湖区沉淀速率为０．０３－０．１１ｃｍ／ａ，并据此估算出燕窝湖沉积物是距今１３０００ａ，即末次冰期以来形成的。讨论了大气^（１４）Ｃ产生率纬度效应，以及^（１４）Ｃ分布储存库效应、环境效应、硬水效应等对极地湖泊沉积物^（１４）Ｃ测年之影响及校正。
The ￣(14)C ages of terrestrial moss from the Yanwo Lake, Antarctic have been accurately determined by means of accelerator mass spectrometry method and the sedimentation rates of 0.03-0.11cm/a were obtained. Based on these rates, it can be estimated that the Yanwo Lake sediments formed since 13000a, i. e. last glacial.The latitude effect of ￣14C productivity, reservior effect, environment effect, hardwater effect on￣(14)C age of Antarctic lake sediments have also been discussed.
出处
《地球化学》
CAS
CSCD
北大核心
1995年第C00期1-6,共6页
Geochimica
基金
国家自然科学基金
瑞士国家基金资助项目
