| 胶东煌斑岩的地球化学特征及成因探讨 |
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| 引用本文： | 徐 红,徐光平.胶东煌斑岩的地球化学特征及成因探讨[J].岩石矿物学杂志,2000,19(1):36-44. |
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| 作者姓名： | 徐 红 徐光平 |
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| 作者单位： | 1. 南京交通高等专科学校,南京,210018
2. 南京大学成矿机制研究国家重点实验室,南京,210093 |
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| 基金项目： | 国家自然科学基金!资助项目 (490 0 0 0 2 0 ) |
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| 摘 要： | 胶东金矿区煌斑岩脉广泛发育，这些煌斑岩具有高碱富钾、较高的铝含量、Ｍｇ＾＃值较大等特征，岩性相当于玄武质－玄武安山质的岩石组合。煌斑岩的Ｃｒ与Ｎｉ、Ｋ与Ｒｂ、Ｓｒ与Ｂａ呈现正相关性，其比值接近华北地块上地壳的值；煌斑岩全岩的δ＾１８Ｏ值和＾８７Ｓｒ／＾８６Ｓｒ值也较高，εＮｄ（ｔ）则呈较大的负值，表明煌斑岩的成岩物质来源与地壳有关。胶东群的两阶段部分熔融模式可以较好地解释这类煌斑岩的成因机制。
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| 关 键 词： | 煌斑岩 岩石化学 微量元素 金矿区 锶同位素 |
| 修稿时间： | 1999-05-20 |
Geochemical Characteristics and Genesis of the Lamprophyres in the Jiaodong Gold Ore District, Shandong Province |
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| Xu Hong.Geochemical Characteristics and Genesis of the Lamprophyres in the Jiaodong Gold Ore District, Shandong Province[J].Acta Petrologica Et Mineralogica,2000,19(1):36-44. |
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| Authors: | Xu Hong |
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| Abstract: | The Jiaodong gold
ore district is one of the most important gold districts in China, and there are many
lamprophyre veins in each gold deposit, which mainly spread parallel to gold ore veins.
According to the intersections between the gold veins and the lamprophyre veins, the
lamprophyres can be divided into three groups, belonging respectively to
pre_mineralization period, mineralization period and post_mineralization period, This
paper has made a detailed study on petrology, petochmistry, trace element geochemistry and
oxygen, neodymium and strontium isotopic composition of lamprophyres from four typical
gold deposits, namely Qixia, Rushan, Linglong and Jiaojia. |
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| Keywords: | lamprophyre petrochemistry O Nd Sr isotope trace element Jiaodong gold ore district |
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