...
首页> 外文期刊>Geochemistry, geophysics, geosystems >A kinetic model to explain the grain size and organic matter content dependence of magnetic susceptibility in transitional marine environments: A case study in Ria de Muros (NW Iberia)
【24h】

A kinetic model to explain the grain size and organic matter content dependence of magnetic susceptibility in transitional marine environments: A case study in Ria de Muros (NW Iberia)

机译:一种动力学模型,用于解释过渡海洋环境磁化率晶粒尺寸和有机质含量的依赖性:Ria de Muros(NW Iberia)的案例研究

获取原文
获取原文并翻译 | 示例
           

摘要

Magnetic minerals in marine sediments are sensitive indicators of processes such as provenance changes, climatic controls, pollution, and postdepositional geochemical changes. Magnetic susceptibility is the bulk property of the sediments most commonly used to understand the magnetic characteristics of sediments. Before conclusions can be drawn from changes in this parameter, it is important to understand what factors and to what extent control changes in magnetic susceptibility. The magnetic susceptibility of surficial sediments in the Galician Rias Baixas, in NW Spain, has been shown to covary with sediment texture and organic matter content. Downcore, the magnetic properties of these sediments experience drastic changes as a result of strong dissolution caused by early diagenesis. In this paper, we further explore the relationship between these factors and formalize the observed covariations as the result of a simple second-order kinetic model dependent on the content of organic matter in surficial sediments in the Ria de Muros. The reanalysis of previously reported data from the Rias de Vigo and Pontevedra confirmed the validity of this model and suggested further controls such as wave climate and water depth in the rates at which magnetic susceptibility changes are controlled by organic matter content.
机译:海洋沉积物中的磁性矿物是敏感性指标,如出处变化,气候控制,污染和后审查地球化学变化。磁化率是最常用于理解沉积物的磁特性的沉积物的体积。在结论之前可以从该参数的变化中得出,重要的是要理解哪些因素以及控制磁性易感性的程度。在西班牙的Galician rias baixas的表格沉积物的磁化率已被证明是具有沉积物纹理和有机物质含量的Covary。下部,这些沉积物的磁性特性由于早期成岩作用引起的强烈溶解而产生剧烈变化。在本文中,我们进一步探讨了这些因素之间的关系,并根据依赖于RIA DE MUROS中曲面沉积物中有机物质含量的简单二阶动力学模型来形式化观察到的协变量。先前报告的RAIS de Vigo和Pontevedra的重新分析证实了该模型的有效性,并提出了磁性敏感性变化控制的速率下的进一步控制,例如波浪气候和水深由有机物质含量控制。

著录项

相似文献

  • 外文文献
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