{"id":"33a59404-b7ba-4618-b69c-4001a53637e1","title":"柴达木盆地怀头他拉剖面综合物源分析数据集","title_en":"Integrated provenance analysis data from the Huaitoutala section in the NE Qaidam Basin","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":"柴达木盆地怀头他拉剖面综合物源分析数据","description":"青藏高原东北缘新生代地形演化历史对于检验高原生长动力学模型和理解高原隆升过程十分重要。本研究对柴达木盆地东北部的怀头他拉剖面进行了综合物源分析。物源分析结果显示，在13-8 Ma期间，碳酸质岩屑比例显著增加 (由< 7 %增加到> 20 %)，Al2O3/SiO2比值逐步上升(由20 %上升到29 %)，显著的εNd值下降 (由-9.9下降到-12.4)，前寒武纪(>550 Ma)的碎屑锆石的比例显著增加 (由24 %增加到60 %)。通过与周缘潜在物源区的对比，新的数据指示柴达木盆地东北部的物源区在13-8 Ma期间由东昆仑山转变为祁连山。于是，我们推断祁连山南部在中-晚中新世经历了显著的地形生长。综合遍布祁连山的中-晚中新世构造变形记录和同时期周缘盆地的沉积环境、物源区和气候指标的转变，本研究认为祁连山与周缘盆地之间高起伏地形形成于中-晚中新世。","doi":"10.11888/Geo.tpdc.271627","projection":"","language":"zh","share_type":"protected","east":96.9,"west":96.6,"south":37.1,"north":37.5,"scale":null,"crs":null,"filesize":0.6,"share_policy":"a","ts_created":"2021-07-16T15:28:19.006283+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-07-20T11:07:19.273277+08:00","time_description":"15-3 Ma","datas_group":0,"time_description_en":"15-3 Ma","data_format":null,"project":[11],"specials":["b6500306-f60b-4aa1-b0b6-0324d94866df"],"cite":null,"review_status":5,"review_invite":[{"user_name":"赵磊","username":"赵秦","email":"137qinruihong@163.com","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":"-","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[21],"subtopics":{"metadata":"33a59404-b7ba-4618-b69c-4001a53637e1","three_pole":null,"third_pole":null},"username":"张波","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":619}