Stratigraphie evidence for the convergence history in the Dabie orogenic belt

There has been controversy for the joining models and history of the Dabie orogenic belt, however stratigraphie evidence from Yangtze and North China Blocks, and the north Huaiyang region will provide limit to the join models between the both blocks. By means of Phanerozoic petrofacies palaeogeography comparison between Yangtze and North China Blocks, their characteristics were similar in three stages, and different in another two stages. Given the development of turbidites as a sign of the block subduction, molasses formation as a sign of closure, there have been two times of convergence and two times of subduction since Neoproterozoic Era, which the time of subduction might be in Later Ordovician-Early Silurian and Early Triassic respectively, and time of the convergence might happen in Middle-Late Devonian and Middle Triassic respectively, and the first convergence should be a weak collision. The data of strata, paleontology fossils, and sedimentary records from the northern of Huaiyang region support the