首页 > 过刊浏览>2023年第97卷第5期 >1701-1710. DOI:10.19762/j.cnki.dizhixuebao.2022150.
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磷灰石裂变径迹实验流程的建立及验证 ——外探测器法和LA-ICP-MS/FT法
作者:
作者单位:

1. 自然资源部活动构造与地质安全重点实验室,北京,100081;2. 中国地质科学院地质力学研究所,北京,100081;3. 地震动力学国家重点实验室,中国地震局地质研究所,北京,100037;4. 重庆科技学院石油与天然气工程学院,重庆,401331

作者简介:

杨静,女,1984年生。副研究员,从事同位素热年代学研究。E-mail:yangjing_822822@163.com。


Measurement procedure and verification of apatite fission track dating: External detector method and LA-ICP-MS/FT method
Author:
Affiliation:

1. Key Laboratory of Active Tectonics and Geological Safety, Ministry of Natural Resources, Beijing 100081, China;2. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081;3. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;4. School of Petroleum Engineering, Chongqing University of Science & Technology, Chongqing 401331, China

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    摘要:

    磷灰石裂变径迹定年作为揭示岩石低温热年代学的一种重要方法,能够有效重塑地壳浅部约3~5 km内数百万年以来的热演化历史,已经被广泛应用于地球科学的相关研究中。依托于中国地质科学院地质力学研究所建立的裂变径迹实验室,同时采用外探测器法和LA-ICP-MS/FT法对国际上普遍使用的Durango磷灰石进行了测定,得到2个Durango磷灰石外探测器法年龄为:32.9±1.6 Ma、31.9±2.3 Ma；7个Durango磷灰石LA-ICP-MS/FT法年龄为:31.97±0.82 Ma、30.9±1.5 Ma、32.3±1.4 Ma、30.6±1.1 Ma、30.7±1.4 Ma、29.7±1.9 Ma、31.1±1.3 Ma,两种方法测得的年龄均与国际推荐值在误差范围内一致；此外,我们也应用这两种方法对采集于天山的花岗岩样品18HS-5进行了测试,年龄分别为126.7±3.8 Ma、126.4±3.6 Ma,两种方法得到的年龄在误差范围内一致。实验对比分析表明,实验流程可靠,可推广测试。

    Abstract:

    Apatite fission track dating, as an important method to reveal low temperature thermochronological evolution of rocks, can effectively reconstruct the thermal evolution history of millions of years in the upper crust of 3~5 km, and has been widely used in the related research of earth science. In this study, a measurement procedure was established at the fission track dating laboratory of Institute of Geomechanics, Chinese Academy of Geological Sciences. We measured the age of internationally widely used Durango apatite by the external detector and LA-ICP-MS/FT methods. The ages obtained by external detector method are 32.9±1.6 Ma and 31.9±2.3 Ma; and those obtained by LA-ICP-MS/FT method are 31.97±0.82 Ma, 30.9±1.5 Ma, 32.3±1.4 Ma, 30.6±1.1 Ma, 30.7±1.4 Ma, 29.7±1.9 Ma and 31.1±1.3 Ma. The ages measured by two methods are consistent with the international recommended values with uncertainties. In addition, we also used these two methods to analyze the 18HS-5 granite samples collected from the Tianshan Mountains, with ages of 126.7±3.8 Ma and 126.4±3.6 Ma, respectively. The ages obtained by the two methods are consistent within the error range. The results indicate that the experimental procedure by our laboratory is reliable and the method can be used.

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杨静,施炜,王森,张拴宏,庞建章,杨谦,张宇,王天宇.2023.磷灰石裂变径迹实验流程的建立及验证 ——外探测器法和LA-ICP-MS/FT法[J].地质学报,97(5):1701-1710.
YANG Jing, SHI Wei, WANG Sen, ZHANG Shuanhong, PANG Jianzhang, YANG Qian, ZHANG Yu, WANG Tianyu.2023. Measurement procedure and verification of apatite fission track dating: External detector method and LA-ICP-MS/FT method[J]. Acta Geologica Sinica,97(5):1701-1710.

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历史
  • 收稿日期:2022-04-20
  • 在线发布日期: 2023-07-13
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