| 用磷灰石中稀土元素判别花岗岩成岩成矿系列 |
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| 引用本文： | 张绍立,王联魁,朱为方,杨文金.用磷灰石中稀土元素判别花岗岩成岩成矿系列[J].地球化学,1985(1):45-57. |
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| 作者姓名： | 张绍立 王联魁 朱为方 杨文金 |
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| 作者单位： | InstituteofGeochemistry,AcademiaSinica |
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| 摘 要： | REE investigatious of apatites from two series of granitic rocks, including more than ten types of rock and several tons of rack masses in eight south China‘s provinces permit us to have come to some new understanding abd hence the following conclusions have been drawn. Apatitos from different series of granitic rocks show significant differences in REE distribution, probably due to different source materials. Therefore, REE distribution characteristics can he used to distinguish source-different granitic rocks. The apatites in granites of the Nanling series (derived from the shallow erust) have a lower eontont of ∑REE (4571 ppm on everage). In the apatites Y is the highest of the REE group.∑Y is rich relative to ∑ Ce, thua giving rise to relatively low ∑ Ce/∑Y ratio (0.68 on average) Eu shows strong depletion, and..5 Eu is extremely law (0.135 on average).The REE distribution patterns are represented by the “V”-shaped symmetric curves.The apatites in granitos of the Changjiang (Yangtze) series are relatively high in ∑REE (8571.3 ppm on average) Ce is the highest of the REE group. ∑Ce is rich relative to ∑Y and the ∑Ce/∑Y is relatively high (7.15 an average) in the apatites from the Yangtze series. The chondrite-normalized REE distribution patterus are charactorized by the rightward-inclined curves.
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| 关 键 词： | 磷灰石 稀土元素 花岗岩 成岩作用 |
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