CONTINUOUS SEDIMETATON:THE IMPORTANT FORMATION CONDITION FOR HIGH QUALITY HYDROCARBON SOURCE ROCKS IN LARGE OIL AND GAS FIELDS OF GULF OF MEXICO BASIN

The Gulf of Mexico Basin was a typical rifting basin of Mesozoic-Cenozoic,formed in the southern margin of North American craton,at most of the time stayed in the condition of lasting and stable sedimetation.Since late Jurassic,through stable and continuous sedimentation,it has formed high quality Mesozoic source rocks with the abundant organic-rich anoxic carbonate,black calcareous shales and shaly limestones,and it mainly deposited terrigenous clastic sediments of giant thickness in Cenozoic which could be the potential source rocks.Additional with good relations among the source-reservior-seal rocks,rich hydrocarbon accumulations formed in the basin undoutedly.