Three-dimensional cooling pattern of a granitic pluton I: The study of exsolution sub-solidus reactions in the Toki granite, Central Japan
Three-dimensional cooling pattern of a granitic pluton I: The study of exsolution sub-solidus reactions in the Toki granite, Central Japan
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花岗岩体的三维冷却模式Ⅰ：日本中部土岐花岗岩的溶出次固相线反应研究
DOI：
10.2465/jmps.100129a
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发表时间：
2011
影响因子：
0.7
通讯作者：
T. Nishiyama
中科院分区：
文献类型：
--
作者：
T. Yuguchi;T. Tsuruta;T. Nishiyama
岩石学研究的发展和变化的亚固相线反应记录在Toki花岗岩代表的三维冷却模式，这个分区的岩体在日本中部。从19个钻孔中收集的样品在Toki花岗岩显示出的特征，指示的空间变化的程度的亚固相线反应。出溶粗化产生了微条纹长石，包括钠长石丰富的薄片，在这个岩体中，而深成粗化导致形成的缀片长石，myrmekite，和反应的边缘。氘粗化反应的程度可以从缀片长石中富钠长石斑块的宽度和间距以及myrmekite和反应边缘的厚度来评估。这些结构特征的宽度、间距和厚度随着海拔的升高而系统地增加;它们在岩体西部的水平向内方向上也逐渐增加，但在岩体的东部却没有。结构发育的系统性变化表明，在后变质粗化阶段，Toki花岗岩从顶部和西缘进行了有效的冷却。如三元长石测温法所示，氘粗化可能发生在低于500 °C的温度下。
Petrographical studies examining the development and variations of sub-solidus reactions recorded in the Toki granite represent the three-dimensional cooling pattern of this zoned pluton in Central Japan. Samples collected from 19 boreholes in the Toki granite show characteristics indicative of spatial variations in the extent of the sub-solidus reactions. Exsolution coarsening has produced microperthite, including albite-rich lamellae, in this pluton, while deuteric coarsening has resulted in the formation of patchperthite, myrmekite, and the reaction rim. The extent of the deuteric coarsening reactions can be evaluated from the width and spacing of the albite-rich patch in patchperthite and from the thickness of myrmekite and the reaction rim. The width, spacing, and thickness of these textural features increase systematically with elevation; they also increase gradually in the horizontal inward direction in the western part of the pluton but not in the eastern part of the pluton. The systematic variations in textural development indicate that the Toki granite cooled effectively from the roof and from the western margin during the deuteric coarsening stage. The deuteric coarsening may have occurred at temperatures below 500 °C, as indicated by ternary feldspar thermometry.
共轭稳定自由基光激发高自旋有机分子的设计、合成和物理性质，旨在通过光激发态表达复杂功能（IV）
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
東一 哲也;手木 芳男
通讯作者：
手木 芳男