{"id":"6daf9207-8f01-4d87-92d6-5f175aa14744","title":"西藏明赛矿区绢云母40Ar/39Ar定年数据（2018-2022）","title_en":"40Ar / 39Ar dating data of Sericite in Mingsai mining area, Tibet (2018-2022)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"文件命名：西藏明赛矿区绢云母40Ar/39Ar定年数据（2018-2021）以Excel表格形式储存，文件名称为“西藏明赛矿区绢云母40Ar/39Ar定年数据.xlsx”，其中“西藏明赛矿区绢云母40Ar/39Ar定年数据”代表该数据内容主题。\n数据读取方式：该数据集的Excel表格可直接用Office程序打开，主题内容为西藏明赛矿区绢云母40Ar/39Ar定年数据。","description":"云母Ar-Ar测年技术将选取的白云母样品粉碎、过筛、手工淘洗、重液分离、磁力分选和显微镜检查等获取白云母单矿物，选纯的矿物（纯度>99％）用超声波清洗。清洗后的样品被封进石英瓶中送核反应堆中接受中子照射。照射工作是在中国原子能科学研究院的“游泳池堆”中进行的，使用B4孔道，中子流密度约为2.65×1013n cm-2S-1。照射总时间为1440分钟，积分中子通量为2.30×1018n cm-2；同期接受中子照射的还有用做监控样的标准样：ZBH-25黑云母标样，其标准年龄为132.7±1.2Ma，K含量为7.6%。样品的阶段升温加热使用石墨炉，每一个阶段加热10分钟，净化20分钟。质谱分析是在多接收稀有气体质谱仪Helix MC上进行的，每个峰值均采集20组数据。所有的数据在回归到时间零点值后再进行质量歧视校正、大气氩校正、空白校正和干扰元素同位素校正。中子照射过程中所产生的干扰同位素校正系数通过分析照射过的K2SO4 和CaF2来获得，其值为：（36Ar/37Aro）Ca =0.0002398，（40Ar/39Ar）K=0.004782，（39Ar/37Aro）Ca =0.000806。37Ar经过放射性衰变校正；40K衰变常数λ＝5.543×10-10年-1；计算的J值为0.003283。主成矿期热液载金绢云母40Ar-39Ar年龄为16.03±0.31 Ma，表明该矿床形成于中新世，明显不同于特提斯喜马拉雅金锑多金属成矿带中主要金矿床（形成于始新世）。","doi":"10.11888/SolidEar.tpdc.272140","projection":"","language":"zh","share_type":"online","east":91.0,"west":89.0,"south":27.0,"north":31.0,"scale":null,"crs":null,"filesize":0.01,"share_policy":"a","ts_created":"2022-03-05T13:29:45.123652+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-03-16T15:39:40.456943+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"李明慧","username":"李明慧","email":"liminghui@itpcas.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"--","spatial_resolution":"--","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[808],"subtopics":{"metadata":"6daf9207-8f01-4d87-92d6-5f175aa14744","three_pole":null,"third_pole":null},"username":"张林奎","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":29}