THE DISTRIBUTION OF OIL AND GAS FIELDS IN JIYANG DEPRESSION OF THE BOHAI BAY BASIN IN VIEWPOINT OF WAVE-LIKE MOVEMENT
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摘要: 拗陷内沉积、构造活动方面的表现特征以及拗陷北断南超的箕状结构都表明本区的地幔柱是呈波浪式由南向北迁移的,并为构造物理模拟实验所证宴。地幔隆起及地幔柱的波浪式迁移导致了上部地壳的波状运动,渤海湾盆地济阳拗陷的形成,正是这种波状运动的结果。波状运动控制了凹陷的生成及其结构、沉积中心及沉降中心有规律的迁移以及含油富集区的分布。Abstract: Characteristics of depositional and tectonic activities in Jiyang depression and dustpanshaped structures which were faulted on the northern margin and overlapped on the southern flank showed that mantle plume was migrated in wave-like from south to north. Thatwas verified by tectonophysic modedelling experiment. The migration of mantle plume inwave-like led to the wave-like movement of crust, as a result, Jiyang depression of the Bohai bay basin was formed. Wave-like movement controlled the occurrence of sags and theirarchitectures,the orderly shifting of depositional and tectonic subsidence centers, and theareal distribution of oil accumulations.
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