李双应, 孟庆任, 等. 2002: 大别造山带北缘中生代冲积体系对源区构造的沉积响应. 地质通报, 21(8): 541-546.
    引用本文: 李双应, 孟庆任, 等. 2002: 大别造山带北缘中生代冲积体系对源区构造的沉积响应. 地质通报, 21(8): 541-546.
    2002: Sedimentological response of Mesozoic alluvial depositional systems to tectonism in the source area on the northern margin of the Dabie orogenic belt. Geological Bulletin of China, 21(8): 541-546.
    Citation: 2002: Sedimentological response of Mesozoic alluvial depositional systems to tectonism in the source area on the northern margin of the Dabie orogenic belt. Geological Bulletin of China, 21(8): 541-546.

    大别造山带北缘中生代冲积体系对源区构造的沉积响应

    Sedimentological response of Mesozoic alluvial depositional systems to tectonism in the source area on the northern margin of the Dabie orogenic belt

    • 摘要: 大别山北缘中生界的沉积学研究表明,三尖铺组向上变细的巨旋回记录了从河川径流到碎屑流、超浓缩洪流到远端河道以及越岸沉积,显示源区在早侏罗世(205-180Ma)之前快速抬升之后经历了相对平静阶段。凤凰台组向上变粗的扇砾岩巨层序记录了碎屑流-超浓缩洪流沉积,反映了在侏罗纪末(135Ma)到早白垩世源区剧烈的持续上升和剥蚀,导致向盆地远端砾岩的进积作用。早白垩世晚期,黑石渡组巨旋回下部的碎屑流沉积是近源堆积,上部发育湖相浊积岩,反映源区的构造演变为转换拉张。晚白垩世、盆地边缘与源区一道抬升,遭受剥蚀。

       

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