首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | In English
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 61次   下载 0  
分享到: 微信 更多
3.7 Ma以来西菲律宾海盆南部沉积物来源及其古环境指示意义
王晨,徐方建
1.自然资源部青岛海洋地质所、中国石油大学(华东)地球科学与技术学院;2.中国石油大学(华东)地球科学与技术学院、青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室
摘要:
对西菲律宾海盆南部XT-4孔柱状沉积物进行了元素地球化学分析,利用常量元素上地壳标准化图解和R型因子分析方法进行了物源探究,利用因子分析得出的陆源因子得分变化探讨了物源区的古环境演化。结果表明:XT-4常微量元素垂向上变化主要受控于亚洲内陆的风尘物质和周边火山物质的输入,海洋自生物质也有一定的贡献。以TiO2和K2O等元素为代表的陆源因子得分自3.7 Ma以来表现出阶段性上升的变化趋势,与中国黄土和北太平洋ODP 885/886站沉积物记录的东亚冬季风演化记录有着良好的对比性,同时与青藏高原主要的阶段性隆升时间相对应,响应了晚新生代以来青藏高原隆升对东亚冬季风加强的作用。
关键词:  西菲律宾海盆  物源  风尘  东亚季风  青藏高原隆升
DOI:10.11759/hykx20191201001
分类号:
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目);黄土与第四纪地质国家重点实验室开放基金(SKLLQG1707,SKLLQG1805);中国地质调查局国家专项(DD20191010)
Sediment provenance and its paleoenvironment implication scince 3.7 Ma in the southern part of the Western Philippines basin
wangchen1,2, Xu Fangjian2,3
1.Qingdao Institute of Marine Geology, Ministry of Natural Resources;2.School of Geosciences, China University of Petroleum;3.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology
Abstract:
Elemental geochemical analysis was performed on core XT-4 sediments in the southern part of the Western Philippines basin;with the help of standardized crustal normalization diagrams and R-type factor analysis methods, the provenance of the source was investigated; and by factor analysis, the change of the terrestrial factor scores obtained and the evolution of the paleoenvironment in the provenance area are discussed. The results show that the vertical change of XT-4 normal trace elements is mainly controlled by the input of wind and dust materials and surrounding volcanic materials in Asia, and in addition, the marine biomass also contributes to this change. The terrestrial factor scores represented by elements such as TiO2 and K2O have shown a gradual upward trend since 3.7 Ma, and have formed a obvious contrast with the evolution of the East Asian winter monsoon recorded in the sediments of the Loess and North Pacific ODP 885/886 stations. In addition, these trends correspond to the major periodic uplift times of the Qinghai-Tibet Plateau, and respond to the strengthening of the East Asian winter monsoon since the late Cenozoic.
Key words:  West Philippine basin  Provenance  Dust  East Asian monsoon  Uplift of Tibetan Plateau
版权所有 《海洋科学》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学院 主办单位:中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898755  E-mail:marinesciences@qdio.ac.cn
技术支持:北京勤云科技发展有限公司