{"id":"ebe06c0e-a0f4-4f44-a421-e3eade80a3a7","title":"大别山造山带新县二长花岗岩体同位素年龄和地球化学组成数据","title_en":"Isotopic age and geochemical composition of the Xinxian monzonitic granite in the Dabie orogenic belt","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":"命名方式：姓名+年份，Excel","description":"锆石LA-ICP-MS分析结果表明，新县岩体主体为二长花岗岩，按照其结晶粒度可分为三个岩石单元，形成于133~129 Ma 之间，并保存有古元古代继承锆石。XRF和ICP-MS分析方法获得的全岩主量和微量元素地球化学组成显示，岩石具有富硅和富碱特征，属于（弱） 过铝质高钾钙碱性系列，亏损Ba、Sr 等大离子亲石元素和P、Ti 等高场强元素，无显著的Nb-Ta 亏损。在稀土元素配分模式图中，具有富集轻稀土、亏损中稀土、弱富集重稀土元素等特征，并具有明显的Eu 负异常，表明岩浆源区可能为角闪石稳定区域，而非加厚下地壳的石榴子石稳定区，推测岩浆形成于加厚地壳的伸展减薄环境。TIMS方法获得全岩Sr-Nd-Pb同位素组成，表明岩浆源区主要由古老的地壳物质构成。数据源自科研项目“国家重点研发计划“燕山期重大地质事件的深部过程与资源效应”（2016YFC0600404)。","doi":"10.16108/j.issn1006-7493.2019031","projection":"","language":"zh","share_type":"online","east":114.9,"west":114.5,"south":31.6,"north":31.9,"scale":null,"crs":null,"filesize":4.0,"share_policy":"a","ts_created":"2021-05-24T09:46:03.617106+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-06-02T10:58:15.560046+08:00","time_description":"150 Ma以来","datas_group":3,"time_description_en":"Since 150 Ma","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":"1000 year < x","spatial_resolution":"1km - 10km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[537],"subtopics":{"metadata":"ebe06c0e-a0f4-4f44-a421-e3eade80a3a7","three_pole":null,"third_pole":null},"username":"陈福坤","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":362}