| 山东烟台门楼水库火山岩剖面特征及地学意义 |
| 投稿时间：2021-10-29 修订日期：2022-03-03 点此下载全文 |
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| 中文摘要:作者在山东省重要地质遗迹调查研究工作中,首次在烟台门楼水库东侧马山发现了典型的火山岩侵入剖面,为准确评价剖面地学意义,在剖面中采取砂样1件,玄武岩样品3件,分别送至成都理工学院应用核技术研究所和中国地震局地质研究所进行了ESR法和K-Ar法精确测年,通过测年数据及相关研究印证,胶东地区为地壳长期稳定或微微隆起的地区,可作为我国第三地势阶梯中地壳稳定或相对隆升区的一个代表；火山岩剖面为中新世晚期产物,其火山活动大致可分为三期：第一期为火山凝灰岩与火山集块岩喷发时期,大约发生在7.19Ma左右,第二期为玄武岩的多期次溢流时期大约发生在6.75Ma左右,第三期为小型断裂活动与玄武岩脉的侵入时期,大约发生在5.32Ma左右,但其规模明显弱于前两期。门楼水库火山岩剖面是我国少有的火山岩侵入剖面,属典型地质遗迹资源,具有较高的科研与保护价值。 |
| 中文关键词:地学意义 火山岩剖面 门楼 山东省 |
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| The characteristics and geological significance of volcanic rock profile in Menlou reservoir, Yantai, Shandong Province |
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| Abstract:In the investigation of important geological relics in Shandong Province, the author discovered for the first time a typical volcanic intrusion profile in Mashan, east of Menlou Reservoir in Yantai, which is of great significance for accurate evaluation of profile geology.One sand sample and three basalt samples were taken from the section and sent to institute of Applied Nuclear Technology of Chengdu University of Technology and Institute of Geology of China Earthquake Administration respectively for ESR and K-Ar accurate dating; The dating data and related researches confirm that the Jiaodong area is a long-term stable or slightly uplifted area of the crust, which can be regarded as a representative of the stable or relatively uplifted area of the crust in the third terrain ladder of China; The volcanic rock section is the product of |
| keywords:geoscience significance Volcanic section Menlou reservoir Shandong Province |
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