秦岭石炭纪古海洋特征及古地理再造

华北、扬子陆块间的秦岭石炭系经沉积、古生物、地球化学等方面研究表明，石炭纪古海洋由北缘浅海陆棚、中央裂陷盆地及南缘浅海陆棚３个部分组成，中央的中秦岭裂陷盆地受两期重大裂陷构造事件控制，盆地内以块体重力流－低密度流沉积为主，具贫氧、低沉积速率特点，反映了半深海略封闭的海盆沉积环境，很可能是扬子陆块北缘的陆缘盆地。

FEATURES AND RECONSTRUCTION OF CARBONIFEROUS QINLING SEA

Based on analysis of sedimentology, paleontology and geochemistry from Qinling Mts in Carboniferous between North China and Yangtze blocks,the Carboniferous Sea consists of three parts,including northern margin continental shelf, central taphiogenic basin and southern margin continental shelf. It is controlled by two-phase important extensional tectonic-event in Central Qinling taphingenic basin, and the sediments in the basin are mainly block-debris flow to low density turbidity flow deposits.It shows a hemipelagic and semi-closed basinal depositional environment with dysaetobic character and low sedimentation rate, and it probably is the marginal basin of northern margin in Yangtze block.