| 内蒙古敖汉旗辉绿岩脉体LA-ICP-MS锆石U-Pb年代学——对赤峰-开原深断裂活动的指示 |
| |
| 引用本文： | 陈井胜, 卢崇海, 李斌, 李伟, 刘淼. 内蒙古敖汉旗辉绿岩脉体LA-ICP-MS锆石U-Pb年代学——对赤峰-开原深断裂活动的指示[J]. 地质与资源, 2015, 24(6): 521-525. doi: 10.13686/j.cnki.dzyzy.2015.06.002 |
| |
| 作者姓名： | 陈井胜 卢崇海 李斌 李伟 刘淼 |
| |
| 作者单位： | 1.中国地质调查局 沈阳地质调查中心(沈阳地质矿产研究所), 辽宁 沈阳 110034;; 2.辽宁省矿产勘察院, 辽宁 沈阳 110000 |
| |
| 基金项目： | 中国地质调查局区域地质大调查项目“内蒙古1∶5万敖汉旗、捣各郎营子、新地、铁匠营子幅区域地质矿产调查”（12120113053400）、“内蒙古敖汉旗大黄花地区矿产地质调查”（1212114055501）. |
| |
| 摘 要： | 辉绿岩脉作为来源于地幔的脉体，可作为深断裂活动的标志.在赤峰敖汉旗1：5万区调工作中，在邢家窝铺古元古代宝音图群中识别出近东西向展布的辉绿岩脉.辉绿岩脉锆石U-Pb LA-ICP-MS年龄显示603~521 Ma、450 Ma、259~262 Ma、237 Ma、（167.4±3.0）Ma等5组年龄.其中最小年龄（167.4±3.0）Ma代表了辉绿岩脉体的形成年龄.反映了赤峰-开原深断裂在中侏罗世的活化；其余几组年龄也与赤峰地区不同期次的岩浆活动相对应.结合前人资料总结了赤峰-开原深断裂的形成与演化.
|
| 关 键 词： | 赤峰-开原深断裂 辉绿岩脉 锆石U-Pb年代学 敖汉旗 内蒙古 |
| 收稿时间： | 2015-06-03 |
| 修稿时间： | 2015-06-13 |
ZIRCON LA-ICP-MS U-Pb GEOCHRONOLOGY OF THE DIABASE DIKES IN AOHAN QI,INNER MONGOLIA: Indication for the Activity of Chifeng-Kaiyuan Deep Fault |
| |
| CHEN Jing-sheng, LU Chong-hai, LI Bin, LI Wei, LIU Miao. ZIRCON LA-ICP-MS U-Pb GEOCHRONOLOGY OF THE DIABASE DIKES IN AOHAN QI, INNER MONGOLIA: Indication for the Activity of Chifeng-Kaiyuan Deep Fault[J]. Geology and Resources, 2015, 24(6): 521-525. doi: 10.13686/j.cnki.dzyzy.2015.06.002 |
| |
| Authors: | CHEN Jing-sheng LU Chong-hai LI Bin LI Wei LIU Miao |
| |
| Affiliation: | 1.Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China;; 2.Liaoning Institute of Mineral Exploration, Shenyang 110000, China |
| |
| Abstract: | Diabase dikes, which are derived from the mantle, can be used as an indicator of deep fault activities. During the 1:50000 geology survey in Aohan Qi area, Inner Mogolia, the authors identified near east-west extended diabase dikes in the Paleoproterozoic Baoyintu group in Xingjiawopu. The zircon U-Pb LA-ICP-MS dating of the diabase dikes show five age groups:603-521 Ma, 450 Ma, 259-262 Ma, 237 Ma and 167.4±3.0 Ma. The youngest age (167.4±3.0 Ma) represents the cooling age of the dikes, indicating the activation of Chifeng-Kaiyuan deep fracture in Middle Jurassic. The other ages are also corresponding to the magmatic activities of different periods in Chifeng area. The formation and evolution of the Chifeng-Kaiyuan deep fault are summarized by combination with previous literatures. |
| |
| Keywords: | Chifeng-Kaiyuan deep fault diabase dike zircon U-Pb chronology Aohan Qi Inner Mongolia |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地质与资源》浏览原始摘要信息 |
|
点击此处可从《地质与资源》下载全文 |
