| 大兴安岭潮满林场地区新元古代花岗质片麻岩——锆石U-Pb测年、地球化学特征及构造环境探讨 |
| |
| 引用本文： | 于喜洹,李新鹏,陈旭峰,孙江军,尹国良,丁继双,都士卓.大兴安岭潮满林场地区新元古代花岗质片麻岩——锆石U-Pb测年、地球化学特征及构造环境探讨[J].地质与资源,2022,31(2):123-130. |
| |
| 作者姓名： | 于喜洹 李新鹏 陈旭峰 孙江军 尹国良 丁继双 都士卓 |
| |
| 作者单位： | 1. 黑龙江省自然资源调查院, 黑龙江 哈尔滨 150036;2. 黑龙江省地球物理地球化学勘查院, 黑龙江 哈尔滨 150036 |
| |
| 基金项目： | 黑龙江省自然资源厅黑龙江省1:5万拜托西河、阿库塞河、四十公里、面包山、下嘎来奥伊河幅区域地质矿产调查 |
| |
| 摘 要： | 对大兴安岭潮满林场地区新元古代花岗质片麻岩进行岩石学、地球化学、成因及构造环境研究结果显示，花岗质片麻岩年龄为795.2±4.3 Ma，形成时代为新元古代. 花岗质片麻岩表现为高硅、高碱、富钙、富钠、富钾、轻稀土元素富集、重稀土元素亏损，Eu为负异常弱亏损. 岩浆源区主要为壳源岩浆，部分幔源岩浆底侵使中下地壳岩石发生部分熔融，且受到幔源组分混染形成混合岩浆. 结合区域资料，研究区新元古代花岗片麻岩形成于与俯冲有关的岩浆弧环境.
|
| 关 键 词： | 新元古代 花岗质片麻岩 地球化学 锆石U-Pb年龄 构造环境 大兴安岭 |
| 收稿时间： | 2021-05-31 |
THE NEOPROTEROZOIC GRANITIC GNEISS IN CHAOMAN FOREST FARM AREA OF DAXINGANLING MOUNTAINS: Zircon U-Pb Dating Geochemistry and Tectonic Environment |
| |
| YU Xi-huan,LI Xin-peng,CHEN Xu-feng,SUN Jiang-jun,YIN Guo-liang,DING Ji-shuang,DU Shi-zhuo.THE NEOPROTEROZOIC GRANITIC GNEISS IN CHAOMAN FOREST FARM AREA OF DAXINGANLING MOUNTAINS: Zircon U-Pb Dating Geochemistry and Tectonic Environment[J].Geology and Resources,2022,31(2):123-130. |
| |
| Authors: | YU Xi-huan LI Xin-peng CHEN Xu-feng SUN Jiang-jun YIN Guo-liang DING Ji-shuang DU Shi-zhuo |
| |
| Institution: | 1. Natural Resources Survey Institute of Heilongjiang Province, Harbin 150036, China;2. Heilongjiang Institute of Geophysical and Geochemical Exploration, Harbin 150036, China |
| |
| Abstract: | The study on the petrology, geochemistry, genesis and tectonic environment of Neoproterozoic granitic gneiss in Chaoman Forest Farm area of Daxinganling Mountains yields the age of 795.2±4.3 Ma. The granitic gneiss is characterized by high Si, high alkali, rich Ca, Na and K, enrichment of LREEs and depletion of HREEs, with weak negative Eu anomaly and depletion. The magma source area is mainly crust-derived magma, and some mantle-derived magma underplating causes partial melting of rocks in the middle-lower crust, with hybridization of mantle-derived components to form mixed magma. Combined with regional data, the Neoproterozoic granitic gneiss in the study area was formed in a magmatic arc environment related to subduction. |
| |
| Keywords: | Neoproterozoic granitic gneiss geochemistry zircon U-Pb age tectonic environment Daxinganling Mountains |
| 本文献已被 万方数据 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》下载免费的PDF全文 |
