| 山东临朐山旺新生代玄武岩中超镁铁岩包体的研究 |
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| 引用本文： | 王方正,金隆裕,徐耀荣.山东临朐山旺新生代玄武岩中超镁铁岩包体的研究[J].地球科学,1987(3). |
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| 作者姓名： | 王方正 金隆裕 徐耀荣 |
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| 作者单位： | 武汉地质学院
(王方正)，山东地矿局
(金隆裕)，河南区测队(徐耀荣) |
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| 摘 要： | 山旺新生代玄武岩中的超镁铁质包体分为五类:尖晶石纯橄榄岩、尖晶石二辉橄榄岩、尖晶石方辉橄榄岩、尖晶石石榴石二辉岩和石榴石二辉橄榄岩。对它们的地质学,岩相学、岩石化学,造岩矿物的化学成分,稀土配分模式及热力学计算的研究表明,前三种岩石属原始地幔岩,后二种是地幔中岩浆作用的产物。
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| 关 键 词： | 包体 玄武岩 成因 岩浆作用 山东省 |
THE STUDY OF ULTRAMAFIC INCLUSIONS IN CENOZOIC BASALT IN SHANWANG, LINQU OF SHANDONG |
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| Wang Fangzheng.THE STUDY OF ULTRAMAFIC INCLUSIONS IN CENOZOIC BASALT IN SHANWANG, LINQU OF SHANDONG[J].Earth Science-Journal of China University of Geosciences,1987(3). |
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| Authors: | Wang Fangzheng |
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| Abstract: | The Shanwang basalts contain ultramafic inclusions and megacrysts of clinopyroxene and anorthoclase. The ultramafic inclusions can be divided into five classes: spinel dunite, spinel lherzolite, spinel harzburgite, spinel-garnet websterite and garnet lherzolite. Based on the study of geology, petrography petrochemistry, chemistry of rock-forming minerals and the model of chondrite-normalized REE distribution, it is indicated that spinel dunite, spinel lherzolite and spinel harzburgite are rocks of primary mantle, and spinel-garnet websterite and garnet lherzolite are the products of another magmatism in mantle. Thermodynamic calculation of t-p conditions at the equilibrium of the mantle inclusions provides the evidence for what has been mentioned before. Experimental petrology data also coincide with the inclusion. |
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| Keywords: | inclusion basalt genesis magmatism Shandong province |
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