| 中国东部新生代玄武岩中二辉橄榄岩团块的结构和组构 |
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| 引用本文： | 何永年,林传勇.中国东部新生代玄武岩中二辉橄榄岩团块的结构和组构[J].地震地质,1981,3(1):41. |
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| 作者姓名： | 何永年 林传勇 |
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| 作者单位： | 国家地震局地质研究所
(何永年)，国家地震局地质研究所(林传勇) |
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| 摘 要： | 本文对中国东部一些新生代玄武岩中二辉橄榄岩团块的结构进行了研究。划分出了粗粒、残碎斑状和粒状变晶等三种主要结构类型,并对不同结构类型团块的组构进行了测定和研究,确定出粗粒—残斑—粒状变晶之过渡系列。认为上地幔普遍存在有塑性流动,初步探讨中国东部新生代时期的不同应力状态
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| 关 键 词： | 团块 橄榄石 残碎斑状 斜方辉石 大麻坪 优选方位 组构 二辉橄榄岩 新生代玄武岩 粒状变晶结构 |
ON THE TEXTURE AND FABRIC OF SOME LHERZOLITE NODULES IN CAINOZOIC BASALT FROM EASTERN CHINA |
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| Abstract: | The ultramafic nodules widely distributed in Cainozoic basalt in eastern China are regarded as fragments of upper mantle that were brought up to the ground surface by basaltic magma. It is suggested that the study of this kind of nodules would offer some direct information about upper mantle. The textures of some spinel lherzolite nodules collected from some regions in eastern China were discussed in this paper. Three main types of texture can be distinguished, such as coarse granular, porpbyroc |
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