| 新疆东准噶尔两类碱性花岗岩及其地质意义 |
| |
| 引用本文： | 刘家远,喻亨祥,吴郭泉.新疆东准噶尔两类碱性花岗岩及其地质意义[J].矿物岩石地球化学通报,1999(2). |
| |
| 作者姓名： | 刘家远 喻亨祥 吴郭泉 |
| |
| 作者单位： | 桂林工学院 |
| |
| 基金项目： | 国家305项目“八五”专题 |
| |
| 摘 要： | 研究证明，东准噶尔境内广泛发育的碱性花岗岩在空间上与深断裂、蛇绿岩及偏碱性的钾长花岗岩类紧密伴生，并可规律地分为卡拉麦里碱性花岗岩带（简称南带）、乌伦古碱性花岗岩带（简称中带）和布尔根碱性花岗岩带（简称北带）。南、中两带碱性花岗岩形成于海西中晚期，图...
|
| 关 键 词： | 碱性花岗岩 A_1、A_2型 板内裂谷环境 东准噶尔 |
Two Kinds of Alkaline Granites in Eastern Junggar, Xinjiang and Their Geological Significance |
| |
| Liu Jiayuan,Yu Hengxiang,Wu Guoquan.Two Kinds of Alkaline Granites in Eastern Junggar, Xinjiang and Their Geological Significance[J].Bulletin of Mineralogy Petrology and Geochemistry,1999(2). |
| |
| Authors: | Liu Jiayuan Yu Hengxiang Wu Guoquan |
| |
| Abstract: | From the point of view of geochemistry, combined with petrological study,the paper expounds the genesis of alkaline gran ites.It is considered that three zones of alkaline granites in eastern Junggar a re similar to typical A type granites and belong to A type granites.At the sam e time,according to Eby's(1992) further dividing scheme and method cited and by means of the projection of four groups of discriminant graphic interpretations,i t is indicated that three zones of alkaline granites in eastern Junggar during d ifferent periods may be further divided into A 1 type and A 2 type subgrou nps.N zone variscan late alkaline granites are A 1 type granites formed withi n the intraplate rift environment or the rift environment.S zone and mesozone v ariscan late alkaline granites are A 2 type granites formed within the postoro genic extension structure environment.Their tectonic and metallogenic significan ce is greatly different. |
| |
| Keywords: | eastern Junggar alkaline granite A 1 A 2 type intraplate rift environment postorogenic extension structur e environment |
| 本文献已被 CNKI 等数据库收录！ |
