| 辽宁省大石桥地区变泥质岩石中矽线石的成因及其地质意义 |
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| 引用本文： | 王天武,刘永江,王成文,王朝顺.辽宁省大石桥地区变泥质岩石中矽线石的成因及其地质意义[J].国土资源,1995(2). |
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| 作者姓名： | 王天武 刘永江 王成文 王朝顺 |
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| 作者单位： | 长春地质学院，辽宁地勘局第五地质大队 |
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| 摘 要： | 辽宁大石桥地区江河岩群变泥质岩石中含有大量的疙瘩状矽线石集合体，主要产于华子峪岩组、汤家沟岩组和江还山岂组中。研究表明，它们的产生和分布既有层控性，又与所处的构造位置有关。本区的矽钱石是在溶液的参与下交代早期变质矿物石榴石、蓝晶石、红柱石和十字石等矿物而形成的，并非是石英＋白云母反应的产物。因此，本区的矽线石集合体不能作为高角闪岩相的标志矿物。
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| 关 键 词： | 变泥质岩，矽线石，成因，大石桥 |
GENESIS OF SILLIMANITE IN META-PELITE OF PROTEROZOIC IN DASHIQIAO AREA, LIAONING |
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| Wang Tianwu Liu Yongjiang Wang Chenwen.GENESIS OF SILLIMANITE IN META-PELITE OF PROTEROZOIC IN DASHIQIAO AREA, LIAONING[J].Land & Resources,1995(2). |
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| Authors: | Wang Tianwu Liu Yongjiang Wang Chenwen |
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| Abstract: | There is a wide distribution of warty-shaped sillimanite assemblages in meta-pelite of Proterozoic Liaohe Group in Dashiqiao area, mainly occurred in Huaziyu ,Tangjiagou and Jianghuanshan rock formations.The studies suggest that the genesis and distribution of silli-manite depend on composition of primitive rock and the structural position where the silli-manite occtuirred.The sillimanites were derived from previously formed garnet ,kyanite,andalusite and staurolite te by metasomatism with fluid,rather from quartz and muscovite bymetamorphic reaction. The sillimanite occurred in the area is not the indication mineral ofhigh amphibolite facies. |
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| Keywords: | Meta- pelite Sillimanite Genesis Dashiqiao |
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