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    中国中、上扬子区石炭纪古构造沉积盆地类型

    PALAEOTECTONIC SETTINGS AND THE TYPES OF TECTONOSEDIMENTARY BASINS IN THE UPPER AND MIDDLE YANGTZE REGIONS,SOUTHERN CHINA

    • 摘要: 中、上扬子区石炭纪继承了加里东运动后的构造格局,滇中前寒武纪基底隆起区——康滇古陆(Ⅰ11)不断向东扩大,与滇东早奥陶世后隆起区(Ⅰ12)归拼。由于川中早志留后隆起区(Ⅰ18)徐徐上升,它把川东鄂西泥盆世后隆起区(Ⅰ111)、以及武当、大洪山(Ⅰ14)、湘西武陵山(Ⅱ15)、雪峰山(Ⅱ16)前寒武基底隆起区基本连在一起,从而使中、上扬子地块上的"中、上扬子古陆"雏形大致形成。晚泥盆世扬子古陆北缘被动大陆边缘盆地等与石炭纪早期基本相仿。

       

      Abstract: The Carboniferous tectonics inherited the post-Caledonian tectonic framework in the Upper and Middle Yangtze regions, southern China. Six types of tectono-sedimentary basins are recognized in accordance with tectonic characteristics, sedimentary formations, sedimentary facies differences, biologic assemblages, basement structures, magmatism and associated mineral resources, They are:Type a-the passive continental margin basin with a unilateral steep slope; Type b-the shallow stable intracratonic basin; Type c-the uniclinal steplike extensional basin; Type d-the extensional basin with intracontinental rifts; Type e-the uniclinal relic trough basin, and Type f-the intracontinental basin. As a reference, the present paper has provided the significant geologic records for the study of the tectonic evolution and basin-controlled mineral resources in southern China.

       

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