地球科学进展 ›› 2011, Vol. 26 ›› Issue (9): 997 -1005. doi: 10.11867/j.issn.1001-8166.2011.09.0997

所属专题: IODP研究

IODP研究 上一篇    下一篇

有孔虫Mg/Ca温度计研究进展——盐度影响及校正
徐建,李建如,乔培军   
  1. 1.西北大学大陆动力学国家重点实验室和地质学系,陕西 西安 710069;
    2.同济大学海洋地质学国家重点实验室和海洋与地球科学学院,上海 200092
  • 收稿日期:2011-07-21 修回日期:2011-08-25 出版日期:2011-09-10
  • 通讯作者: 徐建
  • 基金资助:

    国家自然科学基金青年基金项目“末次冰消期印尼穿越流的古海洋学变化及其影响”(编号:40906032);高等学校博士学科点专项科研基金“早全新世印尼穿越流古海洋学变化及对ENSO的响应”(编号:20096101120025);大陆动力学国家重点实验室自主研究课题“激光剥蚀ICPMS分析有孔虫壳体生源方解石Mg/Ca特征及其古海洋学应用”(编号:BJ11052)资助.

Progresses in Study of Foraminiferal Mg/Ca-Thermometer: Salinity Effect and Its Correction

Xu Jian 1, Li Jianru 2, Qiao Peijun 2   

  1. 1.State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi′an 710069, China;
    2.State Key Laboratory of Marine Geology and School of Ocean and Earth Science, Shanghai 200092, China
  • Received:2011-07-21 Revised:2011-08-25 Online:2011-09-10 Published:2011-10-10

有孔虫壳体Mg/Ca温度计是近10年来发展最快、应用最广的恢复古海水温度的方法之一。随着研究的深入,这一方法面临的问题也越来越突出。其中,海水盐度影响壳体对Mg元素的吸收,是对Mg/Ca温度计“忠诚度”最具威胁性、也是近来最受人们关注的因素之一。查阅了最近2年有关Mg/Ca温度计中盐度效应的最新研究成果,整理出对盐度因素进行校正的方法和解决方案,以供国内同行借鉴和参考。

Mg/Ca-thermometer is one of the most rapidly developed and as well widely used tools to reconstruct paleo-seawater temperatures in the last decade. There is, however, a growing body of evidence showing that the thermometer is significantly biased by a variety of factors. Of them, salinity effect on Mg uptake into biogenic shell calcites is most recently highlighted, with intensive discussions on the “fidelity” of the Mg/Ca-thermometer in reconstructing paleo-seawater temperature, and in turn in calculating salinity when combining Mg/Ca and oxygen isotope on a same foraminiferal sample. In this article, we reviewed the most recent publications with respect to salinity effects on Mg/Ca-thermometer and summarized solutions and/or methods to correct for salinity effects. The objective of this article is to provide helpful and state-of-the-art references for scientists within the country who are engaged in paleoceanographic study using Mg/Ca-thermometer.

中图分类号: 

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