| 大王山动力变质带中蠕英石的特征和成因 |
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| 引用本文： | 朱余德,何绍勋. 大王山动力变质带中蠕英石的特征和成因[J]. 中南大学学报(自然科学版), 1991, 0(1) |
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| 作者姓名： | 朱余德 何绍勋 |
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| 作者单位： | 中南矿冶学院地质系，中南矿冶学院地质系 |
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| 摘 要： | 文章根据大王山糜棱片麻岩中蠕英石的形态特征、分布规律、以及与岩石有限应变状态之间的几何关系等,说明蠕英石是在钾长石变形时形成且受到压应力方向的控制。文中对糜棱片麻岩中蠕英石的形成机理进行了探讨。
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| 关 键 词： | 蠕英石 糜棱片麻岩 变形作用 动力变质作用 大王山动力变质带 |
FEATURES AND GENESIS OF THE MYRMEKITE IN DAWANGSHAN DYNAMOMETAMORPHIC ZONE |
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| Zhu Yude,He Shaoxun. FEATURES AND GENESIS OF THE MYRMEKITE IN DAWANGSHAN DYNAMOMETAMORPHIC ZONE[J]. Journal of Central South University:Science and Technology, 1991, 0(1) |
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| Authors: | Zhu Yude He Shaoxun |
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| Affiliation: | Department of Geology |
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| Abstract: | Although there may be many different geneses for myrmekite, it has been demonstrated that the myrmekite in Dawangshan granitic mylonite-gneiss (DGMG) was formed during the deformation of K-feldspar and was controlled by the normal stress, on account of its shapes, distribution, and the geo- metric relationship between myrmekite development on K-feldspar augen and the finite strain state of the rock. The formation mechanism of the myrmekite in DGMG has been discussed and it has been sug- gested that the myrmekite was formed as a product of the reaction of aqueous Na~ and Ca~(2 ) on K- feldspar in an amphibolite facies. |
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| Keywords: | myrmekite mylonite-gneiss dynamometamorphism deformation Dawangshan dynamometamorphic zone |
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