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大别山造山带前陆深地震反射剖面
引用本文:董树文,高锐,李秋生,刘晓春,钱桂华,黄东定,匡朝阳,李三忠,管烨,白金,贺日政,李朋武.大别山造山带前陆深地震反射剖面[J].地质学报,2005,79(5):595-601.
作者姓名:董树文  高锐  李秋生  刘晓春  钱桂华  黄东定  匡朝阳  李三忠  管烨  白金  贺日政  李朋武
作者单位:1. 中国地质科学院,北京,100037
2. 中国地质科学院地质研究所,北京,100037
3. 中国地质科学院地质力学研究所,北京,100081
4. 中国石油化工股份有限公司第六物探大队,南京,210009
5. 青岛海洋大学,山东,266003
基金项目:国家重点基础研究发展规划项目(973)大陆深俯冲带的三维精细结构课题(编号TG1999075505)资助的成果。
摘    要:在大别山南部和扬子地块前陆实施的深地震反射剖面(140 km)揭示出大别山造山带前陆地壳的精细结构。总体北倾的地壳内部结构与向北缓倾的叠瓦状莫霍面反射揭示出扬子陆块向北俯冲的行迹。莫霍面向北插入大别山造山带下与南大别山地壳内南倾反射震相叠置,构成交叉反射图像,刻画出扬子前陆与大别山造山带的碰撞构造面貌。

关 键 词:大别山造山带  前陆  深地震反射剖面  扬子陆块  超高压变质岩  大陆俯冲
收稿时间:2005-01-08
修稿时间:2005-08-11

A Deep Seismic Reflection Profile across a Foreland of the Dabie Orogen
DONG Shuwen,GAO Rui,LI Qiusheng,LIU Xiaochun,QIAN Guihu,HUANG Dongding,KUANG Chaoyang,LI Sanzhong,GUAN Ye,BAI Jin,HE Rizheng,LI Pengwu.A Deep Seismic Reflection Profile across a Foreland of the Dabie Orogen[J].Acta Geologica Sinica,2005,79(5):595-601.
Authors:DONG Shuwen  GAO Rui  LI Qiusheng  LIU Xiaochun  QIAN Guihu  HUANG Dongding  KUANG Chaoyang  LI Sanzhong  GUAN Ye  BAI Jin  HE Rizheng  LI Pengwu
Institution:1. Chinese Academy of Geological Sciences, Beijing, 100037 ; 2. Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037 ; 3. Institute of Geomechanics ,Chinese Academy of Geological Sciences, Beijing, 100081 ; 4. The 6th Geophysical
Abstract:A 140km seismic reflection profile across the southern Dabie orogen and the Yangtze foreland reveals the detailed structures of the crust beneath the region. The generally north-depping crustal structures and the gently north-dipping Moho interface with several imbricate segment are referred to as the traces of a northward underthrusting of the Yangtze block. The Moho that underthrusts beneath the Dabie orogen and the south-dipping reflections of southern Dabie create a crossed reflection image, depicting the collisional structure beneath the collision of the Yangtze foreland and Dabie orogen.
Keywords:Dabie orogen  foreland  deep seismic reflection profile  Yangtze block  ultrahigh-pressure metamorphic rocks  continental underthrust
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