| 关于大别山榴辉岩相变质作用 |
| |
| 引用本文： | 刘雅琴,刘晓春.关于大别山榴辉岩相变质作用[J].地质通报,1999,18(3). |
| |
| 作者姓名： | 刘雅琴 刘晓春 |
| |
| 作者单位： | 1. 长春科技大学学报编辑部,长春,130026
2. 中国地质科学院地质力学研究所,北京100081 |
| |
| 基金项目： | 原地质矿产部青年地质学家基金 |
| |
| 摘 要： | 大别山产出的榴辉岩相岩石包括石榴橄榄岩、榴辉岩、榴云片岩、榴辉片麻岩、榴玉英岩和榴辉大理岩等不同系列，它们均分布于花岗质片麻岩中。矿物共生序列研究表明，榴辉岩相岩石经历了从绿帘角闪岩相、柯石英榴辉岩相、角闪榴辉岩相、绿帘角闪岩相到绿片岩相的演化过程。花岗质片麻岩及变质火山—沉积岩系并未经历超高压变质作用，但却与榴辉岩相岩石经历了同一期绿帘角闪岩相变质事件，证明二者在地壳范围内发生了构造合并
|
| 关 键 词： | 大别山 榴辉岩相 变质作用 构造合并 |
On the eclogite facies metamorphism in the Dabie Mountains |
| |
| LIU Ya-qin,LIU Xiao-chun.On the eclogite facies metamorphism in the Dabie Mountains[J].Geologcal Bulletin OF China,1999,18(3). |
| |
| Authors: | LIU Ya-qin LIU Xiao-chun |
| |
| Abstract: | Eclogite facies rocks from the Dabie Mountains are mainly composed of garnet peridotite, eclogite, garnet phengite schist, eclogitic gneiss, garnet jadeite quartzite and eclogitic marble, which often occurs within granitic gneisses. The paragenetic sequence in eclogite indicates that eclogite facies rocks experienced progressive metamorphism from epidote amphibolite facies to coesite eclogite facies and retrograde metamorphism from amphibole eclogite facies through epidote amphibolite facies to greenschist facies. Granitic gneisses and metamorphosed volcanic sedimentary rocks were not subjected to ultrahigh pressure metamorphism, but they together with eclogite facies rocks underwent the same epidote amphibolite facies metamorphic event. This may imply that the two rock units were juxtaposed at crustal levels during the late continental collision in the Dabie Mountains. |
| |
| Keywords: | Dabie Mountains eclogite facies metamorphism juxtaposition |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地质通报》浏览原始摘要信息 |
| 点击此处可从《地质通报》下载免费的PDF全文 |
|
