| 藏东玉龙铜矿带含矿斑岩及成岩系列 |
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| 引用本文： | 张玉泉,钟孙霖.藏东玉龙铜矿带含矿斑岩及成岩系列[J].地球化学,1998,27(3):236-243. |
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| 作者姓名： | 张玉泉 钟孙霖 |
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| 作者单位： | [1]中国科学院广州地球化学研究所 [2]台湾大学地质系 |
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| 摘 要： | 西藏东部新生代玉龙铜矿带含矿斑岩，包括玉龙、扎拉尕、莽总、多霞松多和马拉松多等，均为同期不同阶段侵入地质体构成的复式岩体。岩石类型有石英二长斑岩、二长花岗斑岩、正长花岗斑岩和碱长花岗斑岩。岩石化学成分均富碱（Ｎａ２Ｏ＋ｋ２Ｏ〉８％）、高钾和Ｋ２Ｏ／Ｎａ２Ｏ比值远大于１等，属于碱性钾质系列，即钾玄岩系列。
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| 关 键 词： | 成岩系列 含矿斑岩 铜矿带 铜矿床 |
PETROGENESIS SERIES AND THE ORE-BEARING PORPHYRIES OF THE YULONG COPPER ORE BELT IN EASTERN TIBET |
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| Zhang Yuquan, Xie Yingwen, Liang Huaying, Qiu Huaning, Li Xianhua.PETROGENESIS SERIES AND THE ORE-BEARING PORPHYRIES OF THE YULONG COPPER ORE BELT IN EASTERN TIBET[J].Geochimica,1998,27(3):236-243. |
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| Authors: | Zhang Yuquan Xie Yingwen Liang Huaying Qiu Huaning Li Xianhua |
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| Abstract: | Ore-bearing porphyries within the Yulong porphyry copper belt in eastern Tibet include a series of Cenozoic composite intrusions from Yulong, Zalagar, Mangzong,Doxarsumdo,Malasumdo, etc.which were emplaced at different stages in a same magmatic period. Rock types of these ore-bearing porphyries are mainly of quartz monzonitic porphyry, monzonitic granite-porphyry, syenie-granite-porphyry and al kalifeldspar granite-porphyry. Chemical compositions of the intrusions are characterized by alkali-rich (Na2O + K=O > 8%), high content of potassium with K,O / Na2O > 1,indicating that they belong to potassic alkaline series, i.e. shoshonitic series. |
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| Keywords: | petrogenesis series ore-bearing porphyry Yulong Copper Ore Belt |
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