| 陕西潼关地区太华群变质岩原岩性质的恢复 |
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| 引用本文： | 康春华,李民贤. 陕西潼关地区太华群变质岩原岩性质的恢复[J]. 地球科学与环境学报, 1988, 0(3) |
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| 作者姓名： | 康春华 李民贤 |
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| 作者单位： | 四川工业学院(康春华)，西安地质学院(李民贤) |
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| 摘 要： | 潼关地区太华群地层是一套以角闪岩相为主(局部达麻粒岩相)的中深变质岩系。本区太华群变质岩的主要岩石类型:斜长片麻岩类的原岩为中酸性火山岩(二长安山质、英安质凝灰岩);浅(变)粒岩类的原岩为中酸性火山岩(英安岩,流纹岩)一中酸性火山碎屑岩(二长安山质、英安质凝灰岩),并以后者为主,还有少量粘土质沉积岩或长石质杂砂岩;斜长角闪岩的原岩为基性火山岩—拉斑玄武岩。
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| 关 键 词： | 太华群 变质岩 原岩性质恢复 陕西潼关 |
REHABILITATION OF THE CHARACTERISTICS OF THE METAMORPHIC ORIGINAL ROCKS UNDER THE TAIHUA GROUP IN TONGGUAN REGION, SHAANXI PROVINCE |
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| Kang Chunhua. REHABILITATION OF THE CHARACTERISTICS OF THE METAMORPHIC ORIGINAL ROCKS UNDER THE TAIHUA GROUP IN TONGGUAN REGION, SHAANXI PROVINCE[J]. Journal of Earth Sciences and Environment, 1988, 0(3) |
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| Authors: | Kang Chunhua |
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| Affiliation: | Kang Chunhua ( Sichuan Institute of Industry )Li Minxian ( Xi'an College of Geology ) |
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| Abstract: | The strata of the Taihua Group in Tongguan area are a series of mesometamorphic rocks consisting mainly of the amphibolite facies and locally the granulite facies.The essencial types of metamorphic rocks of the Taihua Group in this area are as follows.The primary rocks of plagiogneiss are regarded as the mesoacidic volcanics (andelatite-dacite-ashstone); the primary rocks of the shallow ( variable) grained rocks as the mesoacidic volcanics ( dacite-liparite ); the mesoacidic volcaniclasic rocks as the andelatite and the dacite ashstone.The latter is taken as dominant and in this area there are a few clayey sed-imentory rocks or the feldspathic graywackes. The primary rocks of the plagi-oclase amphibolibolite are regarded as the basic volcanic rocks-tholeiitic-basalt. |
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| Keywords: | Taihua Group metamorphic rocks the characteristic rehabilitation of the original rocks Tongguan in Shaanxi |
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