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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Morphochemistry of patterns produced by mixing of rhyolitic and basaltic melts
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Morphochemistry of patterns produced by mixing of rhyolitic and basaltic melts

机译：流纹和玄武质熔体混合产生的图案的形态化学

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摘要

In this work we present the results of time series experiments performed by mixing basaltic and rhyolitic melts at high temperature using a device recently developed to trigger chaotic dynamics in a mixing system. The morphology of mixing patterns is quantified at different times by measuring their fractal dimension and a linear relationship is derived between mixing time and morphological complexity. The complexity of mixing patterns is also compared to the degree of homogenization of chemical elements during mixing and empirical relationships are established between the fractal dimension and the temporal variation of concentration variance of elements. New concepts and tools to study the magma mixing process unfold from the experimental results presented in this work. The first one is that the mixing patterns are fractals and they can be quantified by measuring their fractal dimension. This represents a further step in the quantification of the magma mixing process. The second outcome is that the relationship between the fractal dimension of the mixing patterns and mixing time is linear. This has important volcanological implications as the analyses of the morphology of mixing patterns in volcanic rocks can be complemented by experiments to build a new chronometer to estimate the mixing-to-eruption time. A further result from this work is the relationship between the fractal dimension of mixing patterns and concentration variance of chemical elements. This represents the first morphochemical study in igneous petrology bringing with it the potential to infer the relative mobility of chemical elements during the time progression of mixing by analyzing the morphology of mixing patterns in the rocks.
机译：在这项工作中，我们介绍了时间序列实验的结果，该时间序列实验是通过使用最新开发的在混合系统中触发混沌动力学的装置在高温下混合玄武质和流纹质熔体进行的。通过测量混合模式的分形维数，可以量化混合模式的形态，并在混合时间和形态复杂度之间得出线性关系。还将混合模式的复杂性与混合过程中化学元素的均质化程度进行了比较，并建立了分形维数与元素浓度变化的时间变化之间的经验关系。研究岩浆混合过程的新概念和新工具从这项工作中提出的实验结果中得以展现。第一个是混合模式是分形的，可以通过测量它们的分形维数来量化它们。这代表了岩浆混合过程量化的又一步。第二个结果是混合模式的分形维数与混合时间之间的关系是线性的。这对火山学具有重要意义，因为对火山岩混合模式形态的分析可以通过实验来补充，以建立一个新的计时器来估算混合至喷发时间。这项工作的进一步结果是混合模式的分形维数与化学元素浓度变化之间的关系。这是火成岩岩石学中的第一个形态化学研究，它具有通过分析岩石中混合模式的形态来推断混合时间过程中化学元素的相对迁移率的潜力。

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    Daniele Morgavi; Diego Perugini; Cristina P.DeCampos; Werner Ertel-Ingrisch; Donald B.Dingwell;

  • 作者单位

    Dept. Earth and Environmental Sciences, Ludwig-Maximilian-University (LMU), Theresienstrasse 41/Ⅲ, 80333 Muenchen, Germany;

    Dept. Earth and Environmental Sciences, Ludwig-Maximilian-University (LMU), Theresienstrasse 41/Ⅲ, 80333 Muenchen, Germany,Dept. Earth Sciences, University of Perugia, Piazza Universita, 06100 Perugia, Italy;

    Dept. Earth and Environmental Sciences, Ludwig-Maximilian-University (LMU), Theresienstrasse 41/Ⅲ, 80333 Muenchen, Germany;

    Dept. Earth and Environmental Sciences, Ludwig-Maximilian-University (LMU), Theresienstrasse 41/Ⅲ, 80333 Muenchen, Germany;

    Dept. Earth and Environmental Sciences, Ludwig-Maximilian-University (LMU), Theresienstrasse 41/Ⅲ, 80333 Muenchen, Germany;

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  • 正文语种 eng
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  • 关键词

    magma mixing; experiments; mixing patterns; fractals; concentration variance;

    机译：岩浆混合实验;混合模式;分形浓度方差;

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