摘要
对哈巴河岩体的磷灰石和锆石进行了裂变径迹测年。磷灰石的裂变径迹年龄为 5 1.1—76 .9Ma ,锆石的裂变径迹年龄为 14 1— 14 9Ma。根据磷灰石中自发裂变约束径迹长度的测量数据和Laslett的数学模型对岩体的古地温变化规律 (T -t轨迹 )进行了模拟 ,并结合其他矿物和方法的实测年龄值和封闭温度原理讨论了该区的热历史和隆升历史。
The fission track ages (FTA) of several apatite and zircon samples from Habahe rock body in Altai were determined. The FTA of apatites were 51.1-76.9Ma, and FTA of zircons were 141-149Ma. Modelling of the palaeotemperature evolution [ T(t) -path] of rock body relies on confined track length measurements and the annealing equations of Laslett et al. (1987). The thermal and uplift history of this region was discussed.
出处
《核技术》
CAS
CSCD
北大核心
2002年第7期525-530,共6页
Nuclear Techniques
基金
国家自然科学基金 (49772 1 70 )
九五国家科技攻关项目 (96 - 91 5)资助
关键词
裂变径迹
热历史
磷灰石
锆石
Fission track, Thermal history, Apatite, Zircon
