{"id":"5f985710-9693-4c1a-a9d0-a6fd5ce28ba6","title":"新疆喀喇昆仑罗布盖子大型铅锌矿独居石年龄数据","title_en":"Monazite age of Luobugai large lead zinc deposit, Karakoram, Xinjiang","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":"数据以Excel格式存储。文件名称为\"MonAge\"，代表独居石年龄数据。","description":"本数据是独居石U-Pb年龄。样品采集自与铅锌矿密切共生的淡色脉体，破碎后手工淘洗分离出重砂矿物, 经磁选和电磁选后, 在双目镜下挑出独居石（约500粒）。选取代表性独居石制靶后通过显微镜透射光和反射光照相，采用BSE对独居石内部结构进行研究。U-Pb年代学在天津地质矿产研究所实验室的193 nm激光剥蚀系统（New Wave）和多接收器电感耦合等离子体质谱仪（MC-ICP-MS，Neptune）上完成。21个测点获得谐和的在误差范围内一致的206Pb/238U表面年龄平均值为99.25±0.78 Ma（MSWD=1.60），这一年龄代表了与铅锌矿成矿密切相关的淡色脉体的结晶年龄，确定该矿床的形成与白垩纪岩浆岩演化晚期的热液有关。依据区域地球化学勘查及区域地质背景的综合分析，认为在甜水海—喀喇昆仑分布的巨型铅锌矿带，受控于侏罗纪-白垩纪火山-沉积盆地及白垩纪岩浆岩，该成矿带具有重大找矿潜力。","doi":"10.19751/j.cnki.61-1149/p.2021.03.012","projection":"","language":"zh","share_type":"offline","east":75.0,"west":74.0,"south":37.0,"north":38.0,"scale":null,"crs":null,"filesize":0.016,"share_policy":"c","ts_created":"2021-11-21T12:56:19.040675+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-11-22T10:57:55.548472+08:00","time_description":"100-99百万年前","datas_group":0,"time_description_en":"100-99 million years ago","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":"1000 year < x","spatial_resolution":"0.5º - 1º","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"5f985710-9693-4c1a-a9d0-a6fd5ce28ba6","three_pole":null,"third_pole":null},"username":"刘小驰","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":409}