{"id":"cbc6c6e8-9ae6-434a-aa4f-355600c3aa2e","title":"西藏中部白垩纪从大洋俯冲到陆陆碰撞过程的火山岩锆石U-Pb数据","title_en":"Transition from oceanic subduction to continental collision in central Tibet: evidence from the Cretaceous magmatism in Qiangtang block","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Word格式存储，文件名称为MDJY开头，代表木地姜雅地区。具体样品编号、实验方法、具体数据等见Word。","description":"南羌塘地体晚中生代岩浆弧与班公湖-怒江特提斯洋的长期俯冲以及随后的拉萨-羌塘地体的碰撞有关，然而从大洋岩石圈俯冲到陆陆碰撞的地质演化过程并不清楚。针对这一科学问题，通过对南羌塘地体木地姜雅地区的火山岩开展研究，取得了以下成果和认识。（1）青藏高原中部双湖县木地姜雅地区的两组火山岩的锆石U-Pb年代数据显示去申拉组火山岩形成时代为114 Ma，阿布山组火山岩形成时代为76-75 Ma。（2）去申拉组火山岩原始岩浆可能来源于被地壳物质混染的地幔橄榄岩的部分熔融，与向北俯冲的的班公湖-怒江特提斯洋壳的板片回转有关。（3）阿布山组火山岩原始岩浆可能为地壳熔体和软流圈地幔的混合熔体，与拉萨-羌塘碰撞区域的岩石圈拆沉有关。","doi":"10.1080/00206814.2020.1867912","projection":"","language":"zh","share_type":"online","east":89.5,"west":89.0,"south":32.0,"north":32.4,"scale":null,"crs":null,"filesize":0.53,"share_policy":"a","ts_created":"2021-05-28T17:44:30.244586+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-06-07T09:02:57.523725+08:00","time_description":"114百万年以来","datas_group":3,"time_description_en":"114 million years ago","data_format":null,"project":[11],"specials":["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},{"user_name":"王浩","username":"王浩_iggcas","email":"wanghao@mail.iggcas.ac.cn","is_cancel_expert":false}],"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":"1000 year < x","spatial_resolution":"1km - 10km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"cbc6c6e8-9ae6-434a-aa4f-355600c3aa2e","three_pole":null,"third_pole":null},"username":"韩中鹏","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":531}