| 内蒙古四子王旗公呼都格花岗岩体地质特征及构造意义 |
| |
| 引用本文： | 李兰英.内蒙古四子王旗公呼都格花岗岩体地质特征及构造意义[J].地质与资源,2005,14(2):97-102. |
| |
| 作者姓名： | 李兰英 |
| |
| 作者单位： | 沈阳地质矿产研究所, 辽宁沈阳 110033 |
| |
| 摘 要： | 公呼都格岩体位于中朝陆台北缘,侵入于奥陶系,被晚古生代晚期花岗岩侵入.黑云母K-Ar年龄测定为306.4 Ma,属晚古生代中期的花岗岩.岩体主要岩石类型为花岗闪长岩及英云闪长岩,以发育富铁黑云母、属过铝质岩石为特征.SrI为0.7162,为S型壳源花岗岩.其形成于中朝板块与西伯利亚板块对接后期的超碰撞造陆阶段,产出部位受深断裂控制.
|
| 关 键 词： | 花岗岩 S型 晚古生代中期 超碰撞 内蒙古中部 |
| 文章编号： | 1671-1947（2005）02-0097-06 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005年1月10日 |
GEOLOGICAL CHARACTERISTICS AND TECTONIC SIGNIFICANCE OF GONGHUDUGE GRANITE ROCK BODY IN SIZIWNAGQI, INNER MONGOLIA |
| |
| LI Lan-ying.GEOLOGICAL CHARACTERISTICS AND TECTONIC SIGNIFICANCE OF GONGHUDUGE GRANITE ROCK BODY IN SIZIWNAGQI, INNER MONGOLIA[J].Geology and Resources,2005,14(2):97-102. |
| |
| Authors: | LI Lan-ying |
| |
| Institution: | Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China |
| |
| Abstract: | The Gonghuduge granite rock body,which is tectonically located in the north margin of Sino-Korean platform,intruded Ordovician strata and was intruded by late Late Paleozoic granite.The K-Ar dating (306.4 Ma) of biotite shows that the rock is formed in the middle stage of Late Paleozoic era. The rock body is composed of mainly granodiorite and quartz-mica diorite. It is characterized by peraluminous rock,with high-Fe biotite. The Gonghuduge rock body belongs to crust-derived granite of S-type,formed in the post-collision-epirogenic movement in the later stage of the convergence of Sino-Korean and Siberian plates. The occurrence of the Gonghuduge granite is controlled by deep fault. |
| |
| Keywords: | granite S-type the middle stage of Late Paleozoic post-collision Central Inner Mongolia |
| 本文献已被 CNKI 维普 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 |
|
