| 铜陵中酸性侵入岩同源包体特征及岩浆动力学 |
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| 引用本文： | 周珣若,吴才来,黄许陈,张成火.铜陵中酸性侵入岩同源包体特征及岩浆动力学[J].岩石矿物学杂志,1993,12(1):20-31. |
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| 作者姓名： | 周珣若 吴才来 黄许陈 张成火 |
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| 作者单位： | 中国地质大学，中国地质大学，安徽省地矿局321地质队，安徽省地矿局321地质队 北京 100083，北京 100083，铜陵 244033，铜陵 244033 |
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| 基金项目： | 国家计委基金，地矿部〈七·五〉国家科技攻关项目(75—55—02)，高等学校博士学科点专项科研基金 |
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| 摘 要： | 铜陵地区中生代中酸性侵入岩的钙碱性系列岩石中,发育同源浅源包体(闪长质微粒包体),而碱性系列岩石中发育同源深源包体(辉石岩和角闪石岩)。它们在矿物化学、稀土微量元素地球化学特征方面与其寄主岩石具有相似性,但在形成的物理化学条件和岩浆动力学特征方面存在一定的差异。反映了它们是同源岩浆在不同岩浆作用阶段的产物,即深源包体来自深位岩浆房中的堆积岩碎块,而浅源包体则来自浅位岩浆房的冷凝边碎块。
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| 关 键 词： | 侵入岩 酸性 矿物包体 岩浆 动力学 |
Characteristics of Cognate Inclusions in Intermediate-Acid Intrusive Rocks of Tongling Area and Their Magmatic Dynamics |
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| Zhou Xunruo,Wu Cailai,Huang Xuechen,Zhang Chenghuo China University of Geosciences,Beijing No. Geological Party,Bureau of Geology and Mineral Resources of Anhui Province.Characteristics of Cognate Inclusions in Intermediate-Acid Intrusive Rocks of Tongling Area and Their Magmatic Dynamics[J].Acta Petrologica Et Mineralogica,1993,12(1):20-31. |
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| Authors: | Zhou Xunruo Wu Cailai Huang Xuechen Zhang Chenghuo China University of Geosciences Beijing No Geological Party Bureau of Geology and Mineral Resources of Anhui Province |
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| Institution: | Zhou Xunruo,Wu Cailai,Huang Xuechen,Zhang Chenghuo China University of Geosciences,Beijing 100083 No.321 Geological Party,Bureau of Geology and Mineral Resources of Anhui Province |
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| Abstract: | The Mesozoic intermediate--acid intrusive rocks in Tongling area havewithin them lots of cognate inclusions, with rocks of calc--alkaline series contai- ning shallow--source inclusions(particulate dioritic ones)whereas those of alkalineseries containing deep--source inclusions(pyroxinite and hornblendite ones). Theseinclusions are similar. to their host rocks in mineral chemistry and geochemistryof rare earth elements and trace elements but somewhat different from them inphysical--chemical conditions for their formation and magmatic dynamic features.This suggests that they are comagmatic. products. formed under different condi-tions, that is, the shallow--seated inclusions came from the chilled border of theupper magmatic chamber while the deep--seated inclusions from the accumula-tive rocks of the lower magmatic chamber. |
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| Keywords: | Tongling shallow-source inclusion deep-source inclusion magmatic dynamics |
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