| 阿尔金山中段苏吾什杰岩体(群)地质特征 |
| |
| 引用本文： | 校培喜. 阿尔金山中段苏吾什杰岩体(群)地质特征[J]. 西北地质, 2003, 36(3): 14-23. |
| |
| 作者姓名： | 校培喜 |
| |
| 作者单位： | 西安地质矿产研究所, 陕西 西安 710054 |
| |
| 基金项目： | 新疆苏吾什杰1∶25万区域地质调查(项目编号20001300009201)部分成果 |
| |
| 摘 要： | 分布于阿中地块中浅变质岩隆起带之上的苏吾什杰岩体(群),为一规模较大的复式岩体,不同岩石类型之间接触关系清楚,由早到晚其侵位顺序为辉长-辉绿岩→闪长岩→似斑状花岗闪长岩→细粒二长花岗岩→似斑状中粗粒二长花岗岩,总体显示成分演化的特点,亦具有结构演化;岩石地球化学资料研究证明,该岩体(群)花岗岩与同碰撞型花岗岩(S-COLG)相似,显示壳源和壳幔混合源花岗岩特点;依据同位素测年结果,确定其侵位时代为早古生代晚期,岩体形成与板块作用相关连。
|
| 关 键 词： | 阿尔金山中段 阿中地块 苏吾什杰岩体(群) 构造环境 |
| 文章编号： | 1009-6248(2003)03-0014-10 |
| 收稿时间： | 2003-03-04 |
| 修稿时间： | 2003-03-04 |
The geological features of Suwushijie rockbody (group) in Altyn Tagh middle-zone |
| |
| XIAO Pei-xi. The geological features of Suwushijie rockbody (group) in Altyn Tagh middle-zone[J]. Northwestern Geology, 2003, 36(3): 14-23. |
| |
| Authors: | XIAO Pei-xi |
| |
| Affiliation: | Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China |
| |
| Abstract: | The Suwushijie rockbody (group) distributed on the meso-epimetamorphic uplift area of the AZhong massif is a large scale multi-body,and contact relationship between different types of rocks is clear.Their invaded order from early to late is gabbro-diabase → diorite → porphy roid granodiorite → fine granular adamellite → porphyr oid medium-coarse-grained adamellite.As a whole,the characteristics of components and tectonic evaluation have been showed in this order mentioned above.The lithog eochemical data proves that this rock group is similar to SCOLG and shows characteristics of source-mixed granite from mantle source rock and crust source rock.Isotope age indicat es that the invaded age of this group is in late period of Early Paleo zoic and relates to subduction of the subducting plate. |
| |
| Keywords: | Altgn Tagh middle-zone A-Zhong massif Suwushijie rock body(group) tectonic environment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西北地质》浏览原始摘要信息 |
|
点击此处可从《西北地质》下载全文 |
