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| 小兴安岭伊春地区环斑花岗岩组合特征及其地质意义 | |
| 引用本文： | 赵寒冬,刘 勇 邓晋福 肖庆辉 马丽玲 杨元江.小兴安岭伊春地区环斑花岗岩组合特征及其地质意义[J].中国地质,2009,36(3):658-668. |
| 作者姓名： | 赵寒冬 刘 勇 邓晋福 肖庆辉 马丽玲 杨元江 |
| 作者单位： | 1. 地质过程与矿产资源国家重点实验室,中国地质大学,北京,100083;岩石圈构造与深部过程及探测技术教育部重点实验室,中国地质大学,北京,100083;黑龙江省地质调查研究总院,黑龙江,哈尔滨,150036 2. 中国地质科学院地质研究所,北京,100037 3. 地质过程与矿产资源国家重点实验室,中国地质大学,北京,100083;岩石圈构造与深部过程及探测技术教育部重点实验室,中国地质大学,北京,100083 4. 黑龙江省地质调查研究总院,黑龙江,哈尔滨,150036 |
| 基金项目： | 中国地质调查局地质大调查项目(200213000025)东北地区基础地质调查及数据更新黑龙江省1∶25万鹤岗市幅(L52C001003)修测数字化区域地质调查项目资助 |
| 摘 要： | 通过1∶25万鹤岗市幅区域地质调查,首次在小兴安岭中南段摩天岭一带发现了具环斑结构的晚石炭世二长花岗岩.环斑长石多呈自形晶宽板状或宽板柱状,少数为圆球状.大小不一.2～3.5 cm,内核为肉红色碱性长石,外壳为宽1～2 mm的灰白色斜长石,有时也见无环的卵圆形斑晶.其岩相学、岩石地球化学特征研究表明,摩天岭环斑花岗岩及其岩石组合为不同于前寒武纪典型非造山环斑花岗岩的造山带型环斑花岗岩,为形成于造山带与板块俯冲体制有关的岛弧或活动大陆边缘环境下的Ⅰ型花岗岩. |
| 关 键 词： | 环斑花岗岩 岩石组合 造山带 Ⅰ型花岗岩 小兴安岭 |
Characteristics and significances of rapakivi in Yichun area of Xiaoxinganling, Heilongjiang Province |
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| ZHAO Han-dong,LIU-Yong,DENG Jin-fu,XIAO Qing-hui,MA Li-ling,YANG Yuan-jiang.Characteristics and significances of rapakivi in Yichun area of Xiaoxinganling, Heilongjiang Province[J].Chinese Geology,2009,36(3):658-668. | |
| Authors: | ZHAO Han-dong LIU-Yong DENG Jin-fu XIAO Qing-hui MA Li-ling YANG Yuan-jiang |
| Institution: | 1.State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Ministry of Education, Beijing 100083, China; Key Laboratory of Lithospheric Tectonics and Lithoprobing Technology, China University of Geosciences, Ministry of Education, Beijing 100083, China; 2.Heilongjiang Institute of Geological Survey, Harbin 150036, China; 3.Chinese Academy of Geological Sciences, Beijing 100037, China |
| Abstract: | Through 1:250000 geological mapping of Hegang City, the authors discovered adamellite in Motianling area in the middle and south of the Xiaoxinganling Mountain, which has the rapakivi texture, and was formed in Late Carboniferous. The rapakivi feldspars are idiomorphism and assume mainly broad platy or broad columnar and subordinately spherical forms. The sizes of the rapakivi feldspars vary from 2 cm to 3.5cm. The core is pink alkali feldspar, and the crust is grayish white plagioclase 1-2mm in size. Some ... |
| Keywords: | rapakivi granite rock assemblage orogenic belt I-type Xiaoxinganling |
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