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Millennial climate changes since MIS 3 revealed by element records in deep-sea sediments from northern South China Sea
  • ISSN号:1000-0550
  • 期刊名称:《沉积学报》
  • 时间:0
  • 分类:P736.21[天文地球—海洋地质;天文地球—海洋科学] Q959.12[生物学—动物学]
  • 作者机构:[1]State Key Laboratory of Marine Geology, Tongji University,Shanghai 200092, China, [2]School of Geography Science, Nanjing Normal University,Nanjing 210097, China
  • 相关基金:This rescarch used samples provided by the MARCO POLO cruise of the International Marine Past Global Change Study (IMAGES) program. We are thankful to Professor Jian Zhimin for helpful discussion, and two anonymous reviewers for their critical and constructive comments that are helpful to improving this paper. This work was supported by the National Natural Science Foundation of China (40806021, 40830107, and 91128208) and the National Basic Research Program of China (2007CB815906).
中文摘要:

高分辨率在来自北华南海的核心 MD05-2903 的元素的记录从 XRF 扫描和谷物尺寸和矿物质部件分析被获得。自从 MIS 3, K/Ti 曲线在千年的规模上揭示气候变化,代表这那么远离华南海的深海的沉积记录的最好之一。什么时候把我们的 K/Ti 记录与另外的气候作比较,从高纬度冰核心并且从东亚石笋记录,在 K/Ti 记录的变化在北半球显示出快速的气候变化的一些典型塑造锯的特征。谷物尺寸分析在 K/Ti 并且在好结束成员谷物尺寸揭示在变化之间的一种靠近的关系。XRD 分析证实高 K/Ti 层被 K 富有的捱过的矿物质统治,特别 illite,当低 K/Ti 层包含低 illite 时但是高许多 Ti 富有的重矿物质。因此, K/Ti 记录在在 stadials 和间冰段期间在北华南海区域捱过矿物质和重矿物质的罚款的输入和免职反映变化。这些元素的变化被变化大部分在东亚季风导致的降雨,侵蚀,和河的交通控制。

英文摘要:

High resolution elemental MD05-2903 from the northern South records in core China Sea were obtained from XRF scanning and grain size and mineral component analyses. The K/Ti curve reveals climate changes since MIS 3 on a millennial scale, representing one of the best such records so far from deep-sea sediments of the South China Sea. When compared our K/Ti record with other climate records from high latitude ice cores and from East Asia stalagmites, variations in the K/Ti record show some typical saw-shaped features of rapid climate changes in the Northern Hemisphere. Grain size analysis reveals a close relationship between variations in K/Ti and in the fine end-member grain size. XRD analysis confirms that high K/Ti layers were dominated by K-rich weathering minerals, especially illite, while low K/Ti layers contain low illite but high abundance of Ti-rich heavy minerals. Therefore, the K/Ti record reflects changes in the input and deposition of fine weathering minerals and heavy minerals in the northern South China Sea region during stadials and interstadials. These elemental changes were largely con- trolled by variations in rainfall, erosion, and fluvial trans- portation induced by East Asia Monsoon.

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期刊信息
  • 《沉积学报》
  • 北大核心期刊(2011版)
  • 主管单位:
  • 主办单位:中国科学院兰州地质研究所 中国矿物岩石地球化学学会沉积学专业委员会 中国地质学会沉积地质专业委员会
  • 主编:刘宝珺
  • 地址:兰州市东岗西路382号
  • 邮编:730000
  • 邮箱:cjxb@ns.lzb.ac.cn
  • 电话:0931-4960916
  • 国际标准刊号:ISSN:1000-0550
  • 国内统一刊号:ISSN:62-1038/P
  • 邮发代号:54-45
  • 获奖情况:
  • 国内外数据库收录:
  • 美国化学文摘(网络版),美国地质文献预评数据库,英国动物学记录,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:24598