{"id":"cf5ce822-fd31-4d74-b347-983d6ceded2e","title":"长江中下游地区管店岩体主微量元素、锆石U-Pb年龄和锆石微量元素数据集","title_en":"Major and trace elements, zircon U-Pb ages and zircon trace elements data sets of the Guandian pluton in the lower Yangtze River 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":"Guandian2018\n01表示主量和微量元素数据表\n02表示锆石U-Pb年龄数据表\n03表示锆石微量数据表","description":"主微量元素数据在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由ICP-MS完成测定。锆石U-Pb年龄和锆石微量均在中国科学院广州地球化学研究所中国科学院矿物学与成矿学重点实验室由LA-ICP-MS完成测定。同批次测定的国际标样和参考值在误差范围内一致，全流程空白低，数据质量准确可靠。管店岩体由石英二长岩构成，准铝质，属于高钾钙碱性系列。样品具有高SiO2 (59.15 - 62.32%)，Al2O3 (14.51 - 15.39%)，Sr (892 - 1184 ppm)含量，Sr/Y (56.74 - 86.32)比值，以及低Y (12.65 - 18.05 ppm)含量，这些地球化学特征类似于典型的埃达克质岩。管店岩体具有较高的K2O (2.88 - 3.86%)含量，MgO (3.89 - 5.24%)含量和Mg# (55 - 60)值，亏损高场强元素(Nb，Ta和Ti)，以及Ba，Pb和 Sr正异常。LA-ICP-MS锆石U-Pb定年结果显示，锆石的加权平均年龄为129.2 ± 0.7 Ma。基于原位锆石微量元素分析，计算得出锆石Ce4+/Ce3+ = (6.97 - 145)，(Eu/Eu*)N = (0.23 - 0.42)。相比于长江中下游和德兴铜矿含矿的埃达克质岩，管店岩体具有较低的氧逸度，这与该区域不含矿的事实一致。结合前人研究，我们提出：管店埃达克质岩岩体是由发生在早白垩世太平洋板块和伊泽奈崎板块的洋脊俯冲所诱发的拆沉下地壳的部分熔融所形成。在洋脊俯冲过程中，物理碰撞导致了加厚下地壳的拆沉，而热化学侵蚀引发了拆沉下地壳的部分熔融。","doi":"10.1080/00206814.2017.1393777","projection":"","language":"zh","share_type":"protected","east":118.3,"west":117.3,"south":32.0,"north":33.0,"scale":null,"crs":null,"filesize":0.09,"share_policy":"a","ts_created":"2021-05-14T15:23:40.863386+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-05-26T14:01:12.204861+08:00","time_description":"早白垩世","datas_group":0,"time_description_en":"Early Cretaceous","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":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":"10km - 100km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[522],"subtopics":{"metadata":"cf5ce822-fd31-4d74-b347-983d6ceded2e","three_pole":null,"third_pole":null},"username":"陈俏恒","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":450}