Evolution of Neoproterozoic-Mesozoic Sedimentary Basins in Qinling-Dabie Orogenic Belt
Zhang Simin
Jiang Gaolei
Liu Kunfeng
Wang Chenggang
Abstract：As the eastern part of the Central Orogenic Belt,Qinling-Dabie Orogenic Belt has a complicated tectonic-sedimentary history.On the basis of a systematic research on the lithostratigraphy,fossil assemblages,isotopic geochronology and tectonics of 4 secondary and 13 three-level tectonic units,this paper divides the study area into 18 types of sedimentary basins,and dis-cusses its tectonic-sedimentary evolution from Neoproterozoic to Mesozoic:(1)Neoproterozoic-Early Paleozoic:North Qinling was magmatic arc and forearc basin; South Qinling experienced intracontinental rift to interplatform basin-platform to continental-margin rift;Dabie-Sulu experienced intracontinental rift to interplatform basin-platform.(2)Late Paleozoic:North Qinling was marine-continental alternation epeiric sea;Mianlüe oceanic basin opened in the Devonian;South Qinling was back-arc shelf and interplatform basin-platform at the same time.(3)Triassic:continental collision orogeny,stage of foreland basins. (4)Jurassic-Cretaceous:stage of fault basins and depressional basins.
Keywords：Qinling-DabieNeoproterozoic-Mesozoicsedimentologytectonicsbasin evloution
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：15( 1185-1199 )