| 内蒙古赤峰地区新生代玄武岩的时空分布 |
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| 引用本文： | 贾文,邵济安,等.内蒙古赤峰地区新生代玄武岩的时空分布[J].地质论评,2002,48(3):267-272. |
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| 作者姓名： | 贾文 邵济安 |
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| 作者单位： | 1. 内蒙古第十地质矿产勘查开发院,赤峰,024005
2. 北京大学地质学系,100871 |
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| 基金项目： | 国家自然科学基金项目(编号40072073)资助的成果。 |
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| 摘 要： | 本文首次对内蒙古赤峰地区新生代火山活动旋回进行了划分，包括渐新世旋回（24－33Ma）；中新世晚期旋回（6－10Ma）；上新世旋回（4．8Ma)和更新世旋回（0．89－0．16Ma）。进一步结合火山岩空间分布以及玄武岩的岩石学和地球化学特征分析，揭示了新生代火山活动由南东向北西逐渐变新，岩浆来源逐渐加深的规律。
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| 关 键 词： | 新生代 玄武岩 时空分布 内蒙古 赤峰地区 |
Temporal-Spatial Distribution of Cenozoic Basalts in Chifeng Area, Inner Mongolia |
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| JIA Wen,ZHU Huizhong,SHAO Ji'an Inner Mongolia No.Temporal-Spatial Distribution of Cenozoic Basalts in Chifeng Area, Inner Mongolia[J].Geological Review,2002,48(3):267-272. |
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| Authors: | JIA Wen ZHU Huizhong SHAO Ji'an Inner Mongolia No |
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| Institution: | JIA Wen,ZHU Huizhong,SHAO Ji'an Inner Mongolia No. Institute of Geology and Mineral Exploration and Development,Chifeng,Inner Mongoli,Department of Geology,Peking University,Beijing |
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| Abstract: | This paper divided for the first time the Cenozoic volcanism in the Chifeng area into Oligocene epoch cycle (24-33 Ma), Late Miocene epoch cycle (6-10 Ma), Pliocene epoch cycle (4. 8 Ma), and Pleistocene epoch cycle (0. 89 - 0. 16 Ma). A tendency of the Cenozoic volcanism getting younger and the source of magma getting deeper gradually form southeast to northwest is brought to light by the space-time distribution and the petrologic and geochemical characteristics of the Cenozoic basalts. |
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| Keywords: | Cenozoic basalts temporal-spatial distribution Chifeng Inner Mongolia |
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