{"id":"1d3b12c2-15c2-44e5-be23-6d5d9ebef28a","title":"西藏聂拉木亚来2号剖面海相碳酸盐岩无机碳氧同位素地化数据(433-419 Ma)","title_en":"Carbon and oxygen isotopic features of marine carbonate rocks from the Yalai 2 section in Nyalam, Tibet (433-419 Ma)","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":"文件名称为“西藏聂拉木亚来2号剖面海相碳酸盐岩无机碳氧同位素地化数据”，由研究地点（西藏聂拉木）+剖面名称（亚来2号剖面）+数据类型（无机碳氧同位素地化数据）组成，数据以excel格式存储，可以用microsoft软件打开读取。","description":"碳循环受全球大气圈、水圈、岩石圈和生物圈各储库碳通量相对变化的影响。地质历史中重要转折期，海相碳酸盐岩δ13C常出现大幅度的偏移，碳同位素的正向偏移与有机碳大规模埋藏或初级生产力提高有关。欧美地区志留纪海相碳酸盐的δ13C值标准曲线已建立, 但是不同地区和不同剖面之间的δ13C值变化趋势却存在一定差异。在应用碳同位素记录进行高精度地层对比时, 要开展沉积环境和成岩作用分析，并将碳同位素记录的变化趋势进行跨相、跨盆地和跨板块对比，以确定其是否记录了区域或全球海洋的碳同位素组成变化。本次研究中温洛克世-普里道利世普鲁组共采集43块样品开展碳氧同位素分析测试，试图揭示冈瓦纳大陆北缘碳循环过程和碳同位素记录的成岩改造作用。亚来2号剖面碳同位素在Ludlow期表现出明显的正偏特征，可以与全球其他剖面碳同位素曲线相对比，反映出这一时期全球海相碳循环异常。本数据集包括43个样品的碳氧同位素数据。","doi":"10.11888/Geo.tpdc.271632","projection":"","language":"zh","share_type":"protected","east":86.1,"west":86.1,"south":28.4,"north":28.4,"scale":null,"crs":null,"filesize":0.032,"share_policy":"c","ts_created":"2021-07-22T13:22:32.330464+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-07-31T10:22:56.963984+08:00","time_description":"433-419 百万年","datas_group":0,"time_description_en":"433-419 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":"1d3b12c2-15c2-44e5-be23-6d5d9ebef28a","three_pole":null,"third_pole":null},"username":"史宇坤","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":631}