{"id":"76334ccb-aea1-418a-8e4e-aff10fef9a10","title":"雅鲁藏布江缝合带中段二叠纪基性岩的微量元素组成及意义","title_en":"Composition and implication of trace elements from the Permian basic rocks in central Yarlung Zangbo suture zone","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":"文件命名：地化数据以Excel格式存储，文件的名称为“Geoch2020.exls”，其中Geoch代表地球化学，2020代表时间。\n数据读取方式：该数据集中的所有文件可以直接用Excel程序打开","description":"前人对雅鲁藏布江缝合带中一些基性岩开展的岩石地化分析指出，在仲巴和仁布一带可能存在侏罗纪-白垩纪海山型的玄武岩基座记录。本次工作对雅鲁藏布江缝合带中段（西藏南部拉孜地区）二叠纪灰岩块体之下的部分基性岩17件样品进行了微量元素分析。部分结果显示，这些岩石主体为玄武岩，以EMORB型为主，少量样品投点于OIB和NMORB型范围。这些以洋壳类型为主的玄武岩，结合上覆沉积接触的碳酸盐岩，共同表明此时期可能存在古海山，亦即这些古海山记录残留于雅鲁藏布江缝合带内。古海山的甄别进一步暗示新特提斯洋在此前（中二叠世）之前业已打开。","doi":"10.11888/Geo.tpdc.271074","projection":"","language":"zh","share_type":"protected","east":87.48,"west":87.33,"south":29.18,"north":29.27,"scale":null,"crs":null,"filesize":0.22,"share_policy":"b","ts_created":"2020-12-29T12:14:51.329803+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-04-19T15:18:16.107464+08:00","time_description":"272百万年至260百万年","datas_group":0,"time_description_en":"","data_format":null,"project":[11],"specials":["b6500306-f60b-4aa1-b0b6-0324d94866df","b6500306-f60b-4aa1-b0b6-0324d94866df"],"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":"0.1º - 0.25º","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"76334ccb-aea1-418a-8e4e-aff10fef9a10","three_pole":null,"third_pole":null},"username":"史宇坤","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":1079}