{"id":"55c2d7f7-d7e5-4f85-8780-53dd823123b8","title":"新疆塔什库尔干县含稀有金属伟晶岩—碳酸岩独居石和锆石年龄数据","title_en":"Age data of monazite and zircon from rare metal bearing pegmatite and carbonatite in Tashkurgan County, 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\"MonZirAge\"，代表独居石和锆石年龄.","description":"本数据是独居石和锆石U-Pb年龄。采集碳酸岩和伟晶岩3件样品（2018KL06为碳酸岩、2018KL101为碳酸岩附近的含电气石伟晶岩、2018KL08-2为含绿柱石伟晶岩），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）和锆石（大于1000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上完成。2018KL06碳酸岩获得17个测点的反向不一致线交点年龄为18.2±0.3 Ma，而其中的9个测试点具有完全谐和的年龄平均值为18.15±0.22 Ma；2018KL101号样品的独居石获得15个谐和性大于90%测点的年龄平均值为19.39±0.36 Ma；2018KL08-2号样品的锆石20个测点的年龄平均值为197.5±1.4 Ma。分别是新生代和中生代（19~18 Ma和200 Ma），其中早期含绿柱石伟晶岩形成于古特提斯洋关闭后的伸展阶段，而新生代含氟碳铈矿碳酸岩-伟晶岩组合，与新生代陆内走滑伸展事件相关，表明帕米尔构造结伸展走滑启动的时间可能在19 Ma。结合区域地球化学异常特征，表明在帕米尔地区有望在稀有、轻稀土找矿上获得突破。","doi":"10. 16509/ j. georeview. 2021. 03. 147","projection":"","language":"zh","share_type":"offline","east":76.0,"west":75.0,"south":37.0,"north":38.0,"scale":null,"crs":null,"filesize":0.022,"share_policy":"c","ts_created":"2021-11-21T13:12:37.270943+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-11-22T11:10:45.992717+08:00","time_description":"200-18百万年前","datas_group":0,"time_description_en":"200-18 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":"55c2d7f7-d7e5-4f85-8780-53dd823123b8","three_pole":null,"third_pole":null},"username":"刘小驰","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":414}