| 郑小明,王召林,刘铁成,肖超.内蒙古大兴安岭北部阿龙山一带玛尼吐组地球化学特征及其地质意义[J].矿产勘查,2017,8(1):5-16 |
| 内蒙古大兴安岭北部阿龙山一带玛尼吐组地球化学特征及其地质意义 |
| Geochemical characteristics and geological significance of Manitu formation in Alongshan area, northern Daxinganling region, Inner Mongolia |
| 投稿时间：2016-04-06 |
| DOI： |
| 中文关键词: 玛尼吐组 阿龙山地区 地球化学 内蒙古 |
| 英文关键词: Manitu formation, Along mountain area, geochemistry, Inner Mongolia |
| 基金项目: |
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| 摘要点击次数: 2985 |
| 全文下载次数: 1662 |
| 中文摘要: |
| 大兴安岭火山岩带是我国东部中生代巨型火山岩带的重要组成部分,该区晚中生代火山岩分布面积广、岩石类型多样、地球化学特征及构造背景复杂。通过岩相学和地球化学研究分析,认为大兴安岭阿龙山地区玛尼吐组火山岩岩石类型主要为安山质、粗安质、英安质及流纹质几种类型,为高钾、富钠钙碱性系列,地球化学特征显示岩浆主要起源于地壳部分熔融形成的壳源岩浆和幔源岩浆的相互作用,形成于挤压环境。 |
| 英文摘要: |
| The volcanic rock belt in Daxinganling belt is an important part of Mesozoic giant volcanic rock belt in eastern China. Within this zone, the late Mesozoic volcanic rocks are widely distributed with various kinds of volcanic rocks and complexed geochemical characteristics and structure background. Based on petrographical and geochemical analysis,it is held that the volcanic rock types in the Manitu formation of Alongshan area in Daxinganling belt are mainly andesitic, trachyte andesitic and rhyolitic rocks which belongs to high-potassium and sodium-rich calcium alkali series. The geochemical characteristics shows that the source magama principaly derived from mixed source of partly melted crust and mantle and formed in a compressional environment. |
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