...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Asian earth sciences >Choosing the best ancient analogue for projected future temperatures: A case using data from fluid inclusions of middle-late Eocene halites
【24h】

Choosing the best ancient analogue for projected future temperatures: A case using data from fluid inclusions of middle-late Eocene halites

机译：为未来的未来温度选择最佳的古代模拟物：以中晚始新世卤岩的流体包裹体数据为例

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

After the Paleocene-Eocene Thermal Maximum (PETM), global temperature and CO_2 levels decreased concurrently in the middle-late Eocene. Using different approaches, estimated CO_2 levels of the middle-late Eocene are very similar to the 1000 ppm CO_2 level projected for the next 100 years. As a result of increasing greenhouse gas concentrations, the average global temperature is projected to increase from 1.4 to 5.8 °C by 2100 relative to 2001 levels. Thus, the middle-late Eocene may be the best ancient analogue for a future with increased temperatures due to burning of fossil fuels. In order to explore the sensitivity range of global annual temperature with respect to CO_2 concentration, exact atmospheric CO_2 concentrations and air temperatures of ancient analogs must be known. Previous palynological studies provide only indirect estimates of temperature; however, the homogenization temperature of fluid inclusions in halites, obtained by the 'cooling nucleation' method, can provide the exact temperature of saline lake water, which is similar to overlying air temperature in shallow lakes. In this paper, we measured the range of homogenization temperatures (from 5.8 to 43.3 °C) of fluid inclusions in middle-late Eocene halites of the Yunying depression, central China. The maximum homogenization temperature of fluid inclusions (Thn_(max)) in these middle-late Eocene halites is 4.6 °C higher than the modern extreme highest temperature (38.7 °C) recorded for this area.
机译：在古新世-始新世热最大值（PETM）之后，中晚始新世的总体温度和CO_2水平同时下降。使用不同的方法，中晚始新世的估计CO_2水平与未来100年的1000 ppm CO_2水平非常相似。由于温室气体浓度增加，到2100年，相对于2001年的水平，全球平均温度预计将从1.4°C升高到5.8°C。因此，由于化石燃料的燃烧，随着温度升高，中晚始新世可能是未来最好的古代类似物。为了探索全球年温度相对于CO_2浓度的敏感性范围，必须知道古代类似物的确切大气CO_2浓度和空气温度。以前的古生物学研究仅提供温度的间接估计值。然而，通过“冷却成核”法获得的卤石中流体包裹体的均质温度可以提供盐湖水的确切温度，这与浅湖中的上覆空气温度相似。在本文中，我们测量了中国中部云英凹陷中晚始新统卤岩中流体包裹体的均质温度范围（5.8至43.3°C）。这些中晚始新世卤岩中流体包裹体的最大均质温度（Thn_（max））比该地区记录的现代极端最高温度（38.7°C）高4.6°C。

著录项

  • 来源
    《Journal of Asian earth sciences》 |2013年第5期|46-50|共5页
  • 作者

    Fan-Wei Meng; Pei Ni; Xun-Lai Yuan; Chuan-Ming Zhou; Chun-He Yang; Yin-Ping Li;

  • 作者单位

    State Key Laboratory of Paleobiology and Stratigraphy, Nanjing institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China,State Key Laboratory for Mineral Deposits Research, Institute of Geo-Fluid Research, Department of Earth Science. Nanjing University, Nanjing 210093. China;

    State Key Laboratory for Mineral Deposits Research, Institute of Geo-Fluid Research, Department of Earth Science. Nanjing University, Nanjing 210093. China;

    State Key Laboratory of Paleobiology and Stratigraphy, Nanjing institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China;

    State Key Laboratory of Paleobiology and Stratigraphy, Nanjing institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China;

    State Key Laboratory of Ceomechanics and Ceotechnical Engineering. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Wuhan 430071, China;

    State Key Laboratory of Ceomechanics and Ceotechnical Engineering. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Wuhan 430071, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    middle-late eocene; halite; fluid inclusion; homogenization temperature;

    机译：中晚始新世盐流体包裹体均质温度;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号