{"id":"ad62b5ff-0369-40b1-af99-bbd0df2845ce","title":"海南岛罗葵洞钼矿床赋矿围岩锆石Hf同位素数据","title_en":"Hf isotopic data of zircon from host rocks of luokuidong molybdenum deposit, Hainan Island","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":"数据均以Excel表格格式储存，文件名称为“LKD-Hf”代表罗葵洞钼矿床赋矿围岩Hf同位素，Excel内表头中标注有样品名称、样品编号、测试点号和处理结果。","description":"海南岛罗葵洞钼矿床赋矿围岩锆石Hf同位素数据，于2017-2019委托中国科学院广州地球化学研究所同位素地球化学国家重点实验室检测，将全岩样品破碎至40~60目左右后，经磁选及重液分选，在双目镜下手工挑选出晶型完好的锆石颗粒，后用环氧树脂制靶，并抛光至锆石内部结构充分暴露，之后对其进行阴极发光图像（CL）、背散射图像（BSE）、透射光图像和反射光图像的拍照，尽量选取无裂隙、无包体等合适的位置，采用Neptune Plus多接收器电感耦合等离子体质谱仪和RESOlution M-50激光剥蚀系统进行测试，测试时挑选U-Pb年龄较谐和的锆石进行测试，激光剥蚀斑束直径为45 μm，频率为6 Hz。所测锆石的176Lu/177Hf和176Hf/177Hf比值以176Lu/175Lu=0.0265和176Yb/172Yb=0.5886为标准进行校正计算，εHf(t)计算采用176Lu的衰变常数为1.867×10-11 a-1，球粒陨石现今的176Hf/177Hf=0.282772和176Lu/177Hf=0.0332，Hf亏损地幔模式年龄（TDM1）的计算采用现今亏损地幔的176Hf/177Hf=0.28325和176Lu/177Hf=0.0384，Hf同位素二阶段地壳模式年龄（TDM2）计算时假设大陆平均地壳的176Lu/177Hf=0.015。\n此数据可为海南岛罗葵洞钼矿床日后在地球化学模型分析中提供数据支持。\n以上数据发表在《地球化学》核心期刊，数据真实可靠，数据以Excel表格形式储存。","doi":"10.11888/Geo.tpdc.271353","projection":"","language":"zh","share_type":"online","east":109.53,"west":109.58,"south":18.4,"north":18.45,"scale":null,"crs":null,"filesize":0.01,"share_policy":"a","ts_created":"2021-05-27T21:17:31.223684+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-06-02T22:57:16.818662+08:00","time_description":"白垩纪","datas_group":3,"time_description_en":"Cretaceous","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"王浩","username":"王浩_iggcas","email":"wanghao@mail.iggcas.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":"Yearly","spatial_resolution":"0.5º - 1º","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[521],"subtopics":{"metadata":"ad62b5ff-0369-40b1-af99-bbd0df2845ce","three_pole":null,"third_pole":null},"username":"王智琳","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":556}