Old land,old uplift and palaeogeography

There are two distinct terrigenous areas in the geological records.One is the old lands which were formed by landmass matching,consolidation and basement cratonization in Grenville orogeny or even earlier.For instance,the North China landmass was consolidated during the Luliang movement,and the Tarim and Yangtze landmasses were consolidated during the Sibao-Jinning movement.The differences of time durations for the landmass consolidation may exercise a major control on the Early Palaeozoic sedimentary basins.The other is old uplifts which resulted from the inversion of the pre-existing sedimentary basins caused by the ocean-continent transition and basin-range transition during the Sinian to the Phanerozoic.The uplifts can be divided into two types: the pericratonic uplift and intracratonic uplift.The intracratonic uplifts are diachronous,and may exercise the controls on the progradation of the underlying sedimentary terrains,the boundary and distribution of the overlying Late Palaeozoic marine basins,and sea-level fluctuation and tectonic subsidence,resulting in the formation of several sequence unconformities.These uplifts may provide valid spaces for sedimentary and/or stratabound ore deposits,and for hydrocarbon accumulation.The pericratonic uplifts tend to act as the tectonic barriers.