普觉、昂龙岗日矿区石榴石年龄数据(2022)
收藏国家青藏高原科学数据中心2026-01-19 更新2026-02-07 收录
下载链接:
https://data.tpdc.ac.cn/zh-hans/data/d4e9daf6-6d62-4faf-9455-be9d4f6015e9
下载链接
链接失效反馈官方服务:
资源简介:
本数据为普觉、昂龙岗日矿区石榴石年龄数据。数据来源于西藏自治区普觉、昂龙岗日矿区,选取的石榴石样品经前处理后,采用激光剥蚀-电感耦合等离子体质谱仪(LA-ICP-MS)进行实验数据采集。每次分析均以15秒空白气体测量开始,随后在激光开启状态下进行40秒样品分析。使用MALIgrandite(U-Pb TIMS年龄为202.0±1.2 Ma)作为主要标准物质对石榴石进行U-Pb地质年代校准。原始数据通过ICPMSDataCal软件与ZSkits软件进行离线校正。采用Isoplot 4.15计算U-Pb年龄,并在Tera-Wasserburg图中获得下交点年龄。数据质量良好,所获得的石榴石年龄数据可有效约束普觉、昂龙岗日矿区的成岩成矿时代。
This dataset contains garnet age data from the Pujue and Anggangri ore districts. Collected from the Pujue and Anggangri ore districts in the Tibet Autonomous Region, selected garnet samples were subjected to pretreatment prior to experimental data acquisition using Laser Ablation-Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Each analysis commenced with a 15-second blank gas measurement, followed by 40 seconds of sample analysis with the laser activated. U-Pb geochronological calibration of garnets was conducted using MALIgrandite (with a certified U-Pb TIMS age of 202.0±1.2 Ma) as the primary reference material. Raw data were corrected offline using ICPMSDataCal and ZSkits software. U-Pb ages were calculated with Isoplot 4.15, and lower intercept ages were derived from Tera-Wasserburg diagrams. The data exhibits excellent quality, and the obtained garnet age data can effectively constrain the diagenetic and metallogenic ages of the Pujue and Anggangri ore districts.
提供机构:
王立强
创建时间:
2026-01-14



