| 辽河群变质相带特征及石榴石的研究 |
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| 引用本文： | 吴春林,郭洪方.辽河群变质相带特征及石榴石的研究[J].矿产与地质,1992(4):288-295. |
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| 作者姓名： | 吴春林 郭洪方 |
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| 作者单位： | 辽宁省地质矿产局区域地质调查队 大连市116100
(吴春林，郭洪方)，辽宁省地质矿产局区域地质调查队 大连市116100(张长捷) |
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| 摘 要： | 辽河群变质带以博洛铺—红石砬子为基轴,显示南北对称呈EW向展布,变质带中没有发现矽线石、红柱石、堇青石等矿物,表明变质温度未达到高温等变质反应度,而属中压相带,且可划分出中压型巴罗式变质带,即黑云母带、铁铝榴石带、十字石带和兰晶石带。变质矿物石榴石均属铁铝石榴石,随着变质度的增高,石榴石成分Al_2O_3、MgO、FeO+Fe_2O_3的含量增加,而CaO、MnO的含量减少,石榴石晶胞参数也随着变质度增高而有规律的减小。
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| 关 键 词： | 石榴石 变质作用 变质相带 |
RESEARCH ON THE FEATURES OF METAMORPHIC FACIES ZONE AND GARNET IN LIAOHE GROUP |
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| Wu Chunlin,Guo Hongfang and Zhang Changjie.RESEARCH ON THE FEATURES OF METAMORPHIC FACIES ZONE AND GARNET IN LIAOHE GROUP[J].Mineral Resources and Geology,1992(4):288-295. |
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| Authors: | Wu Chunlin Guo Hongfang and Zhang Changjie |
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| Abstract: | Boluopu-Hongshilizi is the basic axis of Liaohe Group metamorphic zone which spreads from west to east with S-N symmetrical zoning . In the metamorphic zone ,no sillimanite and andalusite and cordierite have been discovered ,indicating that the metamorphic temperature did not get a high-temperature iso-metamorphic reaction degree,but was of mesozone,and can be divided into medium-presure Barrovian-type metamorphic zones,that is biotite zone ,almandine zone ,staurolite zone and kyanite zone .Metamorphic mineral of garnet is of almandine. With the increasing of the metamorphic degree,the contents of Al2O3,MgO,FeO + Fe2O3 in garnet would be increased,and CaO.MnO decreased. Unit cell parameter of garnet would be decreased regularly with thd increase of metamorphic degree. |
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| Keywords: | Regional metamorphism Metamorphic facies zone Garnet Lialhe Group |
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