| 冀中黄骅坳陷古近纪火山岩地球化学特征及大地构造意义 |
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| 引用本文： | 孟元库,潘澄雨,汪新文,尹行.冀中黄骅坳陷古近纪火山岩地球化学特征及大地构造意义[J].山东国土资源,2013,29(2). |
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| 作者姓名： | 孟元库 潘澄雨 汪新文 尹行 |
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| 作者单位： | 中国地质大学,北京 100083 |
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| 摘 要： | 冀中、黄骅坳陷的火山岩主要发育于古近纪的断陷期,分为Ek Es4,Es2 Es3,Es1 Ed三期.火山岩的岩石系列主要为碱性玄武岩系列,古近纪晚期逐渐向拉斑玄武岩过渡;稀土元素特征同大陆裂谷碱性玄武岩的配分模式一致,为轻稀土富集型.通过岩石地球化学特征分析和大地构造讨论,阐释了研究区古近纪火山活动的构造背景和成因机制.
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| 关 键 词： | 冀中坳陷 黄骅坳陷 火山岩 古近纪 地球化学特征 大地构造 |
Geochemical Characteristics and Tectonic Implications of paleogene Volcanic Rocks in Jizhong-Huanghua Sag |
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| MENG Yuanku,PAN Chengyu,WANG Xinwen and YIN Hang.Geochemical Characteristics and Tectonic Implications of paleogene Volcanic Rocks in Jizhong-Huanghua Sag[J].Land and Resources in SHANDONG Province,2013,29(2). |
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| Authors: | MENG Yuanku PAN Chengyu WANG Xinwen and YIN Hang |
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| Abstract: | olcanic rocks in Jizhong-Huanghua sag mainly developed during the faulting period of Paleogene and can be divided into three periods as Ek-Es4, Es2-Es3 and Es1-Ed. The volcanic rocks are alkaline basalt series and transited gradually to tholeiite series in late Paleogene. REE characteristics are LREE-rich type which is in accordance with the distribution pattern of alkali-basalt of continental rift . Through analysis on geochemical characteristics and tectonic discussion, tectonic setting and genetic mechanism of the Paleogene volcanic activities in study area have been explained. |
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| Keywords: | Jizhong Sag Huanghua Sag volcanic rock Paleogene tectonics |
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