{"id":"4ef89944-ef63-4e7e-8704-d73925a4803c","title":"特提斯构造域东部阿普特期阶前海洋缺氧事件中碳同位素记录和古海洋变化：对富有机沉积物累计的影响","title_en":"Carbon-isotope record and paleoceanographic changes prior to the OAE 1a in the Eastern Tethys: Implication for the accumulation of organic-rich sediments.","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，文件名称以SLH为开头，代表胜利河地区。具体样品编号、实验方法、具体数据等见Word。","description":"早白垩世巴雷姆期和阿普特期大气-海洋系统发生了显著变化，该时期可以提供关于全球构造运动有价值的信息。在文章中，我们提供了位于东特提斯构造域的羌塘盆地早白垩世阿普特期大洋缺氧事件（OAE 1a）之前的胜利河剖面沉积物的高分辨率无机碳同位素和地球化学数据。根据无机碳同位素曲线，我们识别出了10个小的部分，这是特征性的巴雷姆期-早阿普特期碳同位素变化模式，可以进行较好的国际对比。在巴雷姆期-阿普特期，无机碳同位素最显著的特征就是出现多次负偏移，每一次偏移可能都与气候变化有关。在晚巴雷姆期，我们发现了两个无机碳同位素的峰值，这一般与增加的初级生产力和伴随增加的生产力产生的厌氧条件有关。我们的数据表明：页岩沉积时期的缺氧环境是在半封闭的泻湖环境中形成的。虽然较高的生产力和缺氧环境有利于有机质的富集，然而这些条件可能是局部的，并不是控制胜利河剖面富含有机质沉积物沉积的原始机制。我们认为富含有机质页岩的沉积极有可能是全球/区域变暖造成的。温度增加和水温循环加剧有利于提高初级生产力，从而导致水体中氧气最小空间的扩张。","doi":"10.11888/Geo.tpdc.271454","projection":"","language":"zh","share_type":"online","east":87.8,"west":87.2,"south":33.6,"north":34.2,"scale":null,"crs":null,"filesize":0.5,"share_policy":"a","ts_created":"2021-05-31T15:46:00.959682+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-06-11T15:02:15.923848+08:00","time_description":"100百万年以来","datas_group":3,"time_description_en":"For 100 million years","data_format":null,"project":[11],"specials":["b6500306-f60b-4aa1-b0b6-0324d94866df"],"cite":null,"review_status":5,"review_invite":[{"user_name":"平先权","username":"平先权","email":"xqping@cug.edu.cn","is_cancel_expert":true}],"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":"4ef89944-ef63-4e7e-8704-d73925a4803c","three_pole":null,"third_pole":null},"username":"韩中鹏","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":455}