华南加里东运动初探

A Preliminary Study on Caledonian Event in South China

华南加里东运动包含了郁南运动、北流运动(崇余运动)和广西运动,具多幕陆内造山特点。其影响范围包括扬子板块东缘"江南隆起"以东、以南广大地区。华南加里东构造带总体呈东西向展布,南部桂西右江盆地-粤南地区泥盆系不整合于下伏的寒武系之上,中部桂东-粤中-闽西-赣南-湘南地区泥盆系不整合于奥陶系之上,靠近"江南隆起"的湘中-浙西地区泥盆系不整合于志留系之上,但钦防盆地志留系与泥盆系整合接触。寒武系-志留系为同造山盆地的复理石沉积。从寒武纪-志留纪同造山盆地由南向北迁移,盆地展布、物源供给等显示"南山北盆"的盆山格局和造山带"由南向北"挤压的趋势。

Caledonian Movement in South China, including Yunan,Beiliu（Chongyu） and Guangxi events, was an intraeontinental orogeny, and was on impacted extensive area to the east and south of Jiangnan Uplift. The Caledonian structural zone in South China ranges in the direction of EW. Devonian strata overlie uncomfortably Cambrian strata in the southern of South China, from the western of Guangxi Province to the southern of Guangdong Province. Ordovician strata are uncomfortably overlain by the Devonian strata in the central of South China, from the eastern of Guangxi Province, central of Guangdong Province, western of Fujian Province to southern of Jiangxi and Hunan Provinces, so are Silurian strata in the area adjacent to ＂Jiangnan Uplift＂, from the central of Hunan Province to western of Zhejiang Province. However Silurian is overlain comfortably by the Devonian in the Qinfang Basin. Strata from Cambrian to Silurian belong to the flysh succession filled in the synorogenic basin, with basin＇s migration form south to north during the Early Paleozoic. Integrated the spread and provenance of basin, the mountain-basin pattern of ＂south mountain, north basin＂ is suggested, which is ascribed to the orogenic extrusion from south to north.