地质科学
     首页 | 过刊浏览 |  本刊介绍 |  编委会 |  投稿指南 |  期刊征订 |  留言板 |  批评建议 |  联系我们 |  English
地质科学  1999, Vol. Issue (4): 432-441    DOI:
论文 最新目录 | 下期目录 | 过刊浏览 | 高级检索  |   
大别山超高压变质岩的变形历史及折返过程
江来利, 刘贻灿, 吴维平, 苏文
安徽地质调查院, 合肥230001
THE DEFORMATION HISTORY AND EXHUMATION PROCESS OF THE UHPM ROCKS IN THE DABIESHAN
Jiang Laili, Liu Yican, Wu Weiping, Su Wen
Anhui Institute of Geological Survey, Hefei 230001
 全文: PDF (481 KB)   HTML( )   输出: BibTeX | EndNote (RIS)      背景资料
摘要 大别山南部的超高压变质岩在其形成及折返过程中经过5期变形。D1变形为榴辉岩相前变形,形成于扬子板块北缘陆壳基底的俯冲过程中;D2变形形成于折返初期(220-210Ma)即超高压变质岩在浮力驱动下折返至下地壳底部的过程中,变形以块状榴辉岩的糜棱岩化及层状榴辉岩和基质的紧密-同斜褶皱为特征;D3变形发生在折返中期(200-180Ma)即超高压变质岩在南北陆块持续碰撞作用下被挤出并向北逆冲折返至中地壳的过程中,变形以榴辉岩的布丁化和基质的强烈韧性剪切变形为特征;D4变形是折返晚期(130-110Ma)超高压变质岩在地壳浅部伸展体制下向南滑脱所致;在折返至近地表时,超高压变质岩受到NE向断层(D5)的切割。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
江来利
刘贻灿
吴维平
苏文
关键词超高压变质岩   变形   折返   大别山     
Abstract: The ultra high pressure metamorphic (UHPM) rocks in the Dabie Shan suffered five generations of deformation during their formation and exhumation, and provide an important structural constraints to their exhumation. The first generation of deformation (D1) developed before the metamorphism of eclogite facies and are represented by the relic foliation composed of epidote, barroisite, quartz and phengite inclusions in garnets of eclogites. The D2 is preserved as the mylonitic zones on the margin of eclogite blocks and tight isoclinal folds of stratoid, tabular eclogites and their matrix, which developed after the peak metamorphism of eclogite facies. The D3 represented by the boudins of eclogites and the ductile shearing deformation of their matrix is approximately synchronized with the amphibolite facies retrogression. The shear sense in the D3 indicate an up to north thrusting. D4 developed under the metamorphic condition of green schist facies, and is shown by the ductile detachment shear zone and asymmetric tight to open folds in the UHPM rocks. D5 is brittle deformation, in which the UHPM rocks were cut by the NE trending strike slip faults. The exhumation process of the UHPM rocks can be understood by their deformation history with petrology and isotope chronology information. The continental crust on the north margin of the Yongtze plate underthrust to the mantle depth of more than 100km and suffered the UHP metamorphism of eclogite facies during the late Permian to the early Triassic, and then quickly exhumated to the shallow crust: at the first stage (220-210Ma), the UHPM rocks rapidly exhumatd to the bottom of the lower crust by the buoyancy of the subducted continental crust and developed the ductile deformation of eclogite facies; and then at second stage (200-180Ma), the UHPM rocks were extruded and overthrust northward to the middle crust; at last stage (130-110Ma), the uppermost crust over the UHPM rocks detached southward by the post collisional extension, the UHPM rocks further exhumated to the shallow crust. When approaching the earth surface, the UHPM rocks were cut by the NE-trending strike slip faults.
Key wordsUHPM rocks   Deformation   Exhumation   Dabieshan   
收稿日期: 1998-09-23;
基金资助:国家自然科学基金项目;安徽省地质矿产局资助
引用本文:   
江来利,刘贻灿,吴维平等. 1999, 大别山超高压变质岩的变形历史及折返过程. 地质科学, (4): 432-441.
Jiang Laili,Liu Yican,Wu Weiping et al. THE DEFORMATION HISTORY AND EXHUMATION PROCESS OF THE UHPM ROCKS IN THE DABIESHAN[J]. Chinese Journal of Geology, 1999, (4): 432-441.
 
没有本文参考文献
[1] 李洪辉 董洪奎 杜德道 张立平 王祥 陈秀艳 李曰俊. 塔里木盆地麦盖提斜坡及周缘断裂及其对油气成藏的控制作用[J]. 地质科学, 2019, 54(4): 1085-1099.
[2] 林士扬 季建清 苏君. 全球地震震源深度统计分析与地震层分布[J]. 地质科学, 2019, 54(4): 1167-1184.
[3] 李振伟 宋传中 李加好 王阳阳 袁芳 王微 陈守文. 郯庐断裂带桐城段构造变形解析[J]. 地质科学, 2019, 54(4): 1185-1209.
[4] 王阳阳 宋传中 李加好 李振伟 袁芳. 皖南歙县花岗闪长岩构造变形、年代学及其地质意义[J]. 地质科学, 2019, 54(4): 1330-1348.
[5] 王良果 陈龙 张华 蒲刚 赵军 陈中操 蒋尚志. 西秦岭马脑壳金矿床构造变形特征与成矿关系研究[J]. 地质科学, 2019, 54(4): 1383-1398.
[6] 胡召齐 朱强 施珂 李孜腾 乐成生 江来利. 东至断裂带构造变形特征及其构造演化[J]. 地质科学, 2019, 54(3): 893-909.
[7] 杨挺宇 李加好 任升莲 兰瑞烜 陈守文. 北秦岭商南岩体的构造变形、地球化学特征及其地质意义[J]. 地质科学, 2019, 54(3): 1000-1015.
[8] 云金表 宁飞 宋海明 刘士林. 塔里木盆地塔中及周边地区下古生界构造样式与成因演化[J]. 地质科学, 2019, 54(2): 319-329.
[9] 陈秀其 周涛发 侯明金 李明龙. 皖南地区加里东运动构造特征[J]. 地质科学, 2019, 54(1): 62-78.
[10] 陈天仕 程 斌 董云鹏 王兆国. 南北构造带北段S波分裂研究及其动力学意义[J]. 地质科学, 2018, 53(3): 860-875.
[11] 柏道远 熊雄 姜文. 湘中南大庙口地区构造变形特征及其对区域页岩气构造保存条件的启示[J]. 地质科学, 2018, 53(2): 510-530.
[12] 张旭亮 何登发. 桑植—石门复向斜的形成与演化[J]. 地质科学, 2018, 53(1): 269-288.
[13] 笪梁超 牛漫兰 李秀财 韩雨 吴齐 闫臻 赵齐齐. 柴北缘二郎洞地区L 构造岩变形特征及其地质意义[J]. 地质科学, 2017, 52(4): 1038-1057.
[14] 王微,宋传中,李加好,任升莲,张妍,冯腊梅,李振伟,王阳阳. 郯庐断裂带肥东桃源韧性剪切带构造分析及时限探究[J]. 地质科学, 2016, 51(4): 1040-1058.
[15] 杜文博,张进江,肖毓祥,张波,李晓军,侯秀林,王盟,李景,程光瑾. 祁连山北缘深部弧形褶皱—逆冲带及其油气勘探前景[J]. 地质科学, 2016, 51(4): 1059-1073.
 
版权所有 © 2009-2017 《地质科学》编辑部
地址:北京9825信箱  邮政编码:100029
电话:010-82998109  010-82998115