{"id":"33331f2a-1790-4b82-94bc-f90f601ac784","title":"福建闽西南永定大坪辉长岩脉的数据","title_en":"Data of Daping gabbro dyke in Yongding, southwestern Fujian","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和jpg文件存储,可使用Excel工作薄和看图软件打开。名称为\"WRMajTra\"的文件代表全岩主微量元素地球化学数据, \"SrNd\"代表全岩Sr-Nd放射性同位素数据, \" UPb\"代表锆石U-Pb同位素组成和年龄数据，\"GPS\"代表样品点的GPS信息，Fig.1”代表华南侏罗世玄武岩、辉长岩和花岗岩分布图和福建永定地区地质钻孔简图，“Fig.2”代表辉长岩脉正交镜下照片，“Fig.3”永定大坪辉长岩脉斜锆石代表性CL图像和U-Pb同位素谐和图，“Fig.4”永定大坪辉长岩及藩坑组玄武岩岩石分类图解,\"Fig.5\"永定大坪辉长岩及藩坑组玄武岩微量元素及稀土元素蛛网图,\"Fig.6\"永定大坪辉长岩脉及藩坑组玄武岩壳源物质混染判别图解,\"Fig.7\"永定大坪辉长岩脉及藩坑组玄武岩相容元素vs不相容元素图解,\"Fig.8\"永定大坪辉长岩脉及藩坑组玄武岩Nb/U-Nb和Ce/Pb-Ce图解,\"Fig.9\"永定大坪辉长岩脉及藩坑组玄武岩Lu/Yb-Nb/La图解,\"Fig.10\"永定大坪辉长岩脉及藩坑组玄武岩Sr-Nd同位素图解.","description":"南岭地区湘南-赣南-粤北-闽西南近东西向的岩浆岩活动带在年龄、成因、动力学背景等方面一直存有争议。本文以福建西南部永定地区的大坪辉长岩脉为研究对象，在详细的野外工作及镜下岩相学观察的基础上，对其开展了斜锆石U-Pb同位素定年、全岩主微量元素含量以及Sr-Nd同位素比值的测试工作，锆石U-Pb同位素测年数据由ICP-MS分析获得。全岩主微元素数据由XRF分析获得, Sr-Nd同位素组成由MC-ICP-MS分析获得。获得同位素年龄为184.0±6.5Ma，表明岩浆活动为早侏罗世。其地球化学特征具有高碱高钾的特点，无Nb，Ta的正异常，(87Sr/86Sr)i初始值变化在0.7080～0.7090之间，εNd(t)值在-3.6～-3.0之间，显示辉长岩脉起源于富集岩石圈地幔的部分熔融，未经历过壳源物质的AFC作用。该地区同时发育有双峰式火山岩及A型花岗岩，表明在早侏罗世包括永定在内的该岩浆带处于拉张的动力学背景，软流圈上涌，加热EMII型富集岩石圈地幔，分别形成了藩坑组玄武岩和永定大坪辉长岩脉。\n以上数据已发表于中文核心期刊,数据真实可靠。","doi":"10.11888/Geogra.tpdc.271359","projection":"","language":"zh","share_type":"online","east":117.2,"west":116.4,"south":24.5,"north":24.9,"scale":null,"crs":null,"filesize":2.0,"share_policy":"a","ts_created":"2021-05-28T17:01:12.454462+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-06-04T20:48:57.650641+08:00","time_description":"早侏罗世","datas_group":3,"time_description_en":"Early Jurassic","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"颜茂都","username":"颜茂都","email":"maoduyan@itpcas.ac.cn","is_cancel_expert":true}],"review_editor":{"id":66424,"last_login":"2021-08-31T17:09:37.293773+08:00","username":"YanHou","email":"ljz2hy@163.com","is_active":false,"is_staff":false,"user_name":"侯燕"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"10km - 100km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"33331f2a-1790-4b82-94bc-f90f601ac784","three_pole":null,"third_pole":null},"username":"陈 钦","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":513}