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Old Land, Old Uplift and Palaeogeography

详细信息   
摘要

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. 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.

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