| 福建新生代玄武岩的特征、起源及其成因探讨 |
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| 引用本文： | 张俊成,卢清地.福建新生代玄武岩的特征、起源及其成因探讨[J].福建地质,1997(1). |
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| 作者姓名： | 张俊成 卢清地 |
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| 作者单位： | 福建省区域地质调查队!三明，365001，福建省区域地质调查队!三明，365001 |
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| 摘 要： | 福建沿海与内陆地区新生代玄武岩特征明显不同，为不同期火山活动的产物。通过研究认为：新生代玄武岩浆为上地住源岩部分熔融的产物，接近原始玄武岩浆；该时期，福建境内上地幔在垂直方向上存在着化学成分的不均一性，玄武岩在形成过程中遭受不同程度的地幔交代作用，因而导致其源区的不同富集特征。
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| 关 键 词： | 部分熔融程度 原始岩浆 地幔交代作用 新生代玄武岩 福建 |
On the Characteristics and Origin of the Cenozoic Basalts in Fujian Province |
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| Zhang Juncheng, Lu Qingdi.On the Characteristics and Origin of the Cenozoic Basalts in Fujian Province[J].Geology of Fujian,1997(1). |
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| Authors: | Zhang Juncheng Lu Qingdi |
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| Abstract: | The Cenozoic basalts from the coastal and the inland areas of Fujian Province, which have apparently different characteristics, are the products of different episodes of volcanic activities. Based on detail study, it is suggested that the Cenozoic basaltic magmas were produced by the partial melting of the source rocks in the upper mantle, and that their compositions are close to the primary basaltic magma. It is also suggested that vertical chemical heterogeneity existed in the upper mantle of Fujian Province during the Cenozoic era. The basalts underwent various degrees of mantle metasomatism during their formation, which resulted in the different enrichment characteristics of their source regions. |
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| Keywords: | degree of partial melting primary magma mantle metasomatism Cenozoicbasalts Fujian Province |
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