地球学报2025，Vol.46Issue(2)：471-482,12.DOI:10.3975/cagsb.2024.032102
原位LA-ICP-MS磷灰石裂变径迹实验流程建立与应用
Development and Application of In-situ LA-ICP-MS Apatite Fission Track Experiment Procedure
摘要
Abstract
The in-situ LA-ICP-MS(laser ablation-inductively coupled plasma mass spectrometry)apatite fission track dating technique has gradually become widely used in thermochronology laboratories owing to its safety and efficiency advantages.Based on analysis of the principles of the external detector method and the in-situ LA-ICP-MS method,this study has improved the sample preparation procedures for apatite fission track dating and introduced the experimental protocols for in-situ LA-ICP-MS apatite fission track dating established in the thermochronology laboratory of China University of Petroleum(Beijing).Using the newly established testing procedure,the international reference samples Fish Canyon Tuff and Durango were analyzed,yielding ages of(28.70±2.70)Ma(2σ,MSWD=0.63)and(32.01±0.52)Ma(2σ,MSWD=0.91),respectively.These ages are consistent with the recommended ages within the error range.When applying the LA-ICP-MS method to analyze Jurassic samples from the Qianjiadian basin in Yanqing district,7 apatite fission track ages ranged from 91.18 to 74.28 Ma,which are in good agreement with the results obtained using the external detector method by previous researchers.Through thermal history modeling,it was revealed that the western segment of the Yanshan region experienced two cooling events:140-130 Ma and 100-0 Ma,since the Jurassic period.This study demonstrates that the newly established in-situ LA-ICP-MS apatite fission track dating experimental procedure in the laboratory is reliable and offers broader application prospects compared to traditional external detector methods.关键词
磷灰石/裂变径迹定年/原位LA-ICP-MS法/实验流程/国际标样/构造-热演化Key words
apatite/fission track dating/in-situ LA-ICP-MS method/experiment procedure/international reference samples/tectono-thermal evolution分类
天文与地球科学引用本文复制引用
李晨星,常健,邱楠生,曹世纪,张应鳞,郑立庆..原位LA-ICP-MS磷灰石裂变径迹实验流程建立与应用[J].地球学报,2025,46(2):471-482,12.基金项目
本文由国家自然科学基金项目(编号:42272135 （）
U19B6003)和国家重点研发计划项目(编号:2021YFA0716003)联合资助. This study was supported by National Natural Science Foundation of China(Nos.42272135 and U19B6003),and National Key Research and Develop-ment Program of China(No.2021YFA0716003). （编号:2021YFA0716003）
