| 桐柏山-大别山的地体构造特征和构造演化 |
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| 引用本文： | 马宝林.桐柏山-大别山的地体构造特征和构造演化[J].地震地质,1991,13(1):33-42,T001. |
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| 作者姓名： | 马宝林 |
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| 作者单位： | 国家地震局地质研究所 北京 |
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| 摘 要： | 本文讨论了桐柏山-大别山的地质构造特征。对该区三个地体进行了研究,指出:南部随州-广济高压浅变质地体具有俯冲杂岩性质;北部北淮阳高压浅变质地体中、西段具有俯冲杂岩性质,东段具有构造混杂岩特征;中部桐柏-大别山地体早期是洋盆中的大陆地壳残块,后期演化成岛弧。在加里东或海西-印支时期三地体先后碰撞造山。随州-广济地体和北淮阳地体分别向北、向南逆掩或推覆到桐柏-大别地体之上
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| 关 键 词： | 桐柏山-大别山 地体 碰撞 韧性剪切带 |
THE TECTONIC FEATURES AND EVOLUTION OF THE TERRANES IN TONGBAI-DABIE MOUNTAINS |
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| Ma Bao-lin.THE TECTONIC FEATURES AND EVOLUTION OF THE TERRANES IN TONGBAI-DABIE MOUNTAINS[J].Seismology and Geology,1991,13(1):33-42,T001. |
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| Authors: | Ma Bao-lin |
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| Abstract: | This paper deals with the tectonic features of three terranes, namely Suizhou-Guangji, northern Huaiyang, and Tongbai-Dabie terranes. The first consists of subducted melange, which underwent high P-low T metamorphism. The second terrane consists of ophiolitic melange in its central and Western parts and tectonic melange in its eastern part which underwent high P-Low T (11℃/km) metamorphism. The third terrane is continental crust block in a paleao-ocean, with an evolutation into a volcanic arc. During the Caledonian and Hercynian movements these three terranes were involved in the mountain-building events. Although they were deeply eroded. it is recognized that the Suizhou-Guangji and northern Huaiyang terranes have overthrusted the Tongbai-Dabie terrane northward and southward respectively |
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| Keywords: | Tongbai-Dabie mountains Terrane Collision Ductile shear zone |
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