【摘要】 通过对北康盆地 2 0 0 0 0余千米多道地震资料的分析 ,探讨了该盆地的成因类型和形成演化史。北康盆地为陆块裂离后的被动边缘断坳盆地 ,经历了早期断陷 (E1—E22 ) ,中期断拗—走滑、挤压隆升 (E32 —N21)和晚期区域沉降 (N31—Q)三大演化阶段 ,形成了与之相对应的Tg、T5、T3等3个主要不整合界面更多还原

【Abstract】 Based on the analyses of multi_channel seismic data more than 20,000 kilometers in Beikang basin, the origin type and evolution history of the basin are discussed. As a faulted sag in the passive continental margin formed after the land rupture and dispersion, Beikang basin has experienced three evolution stages: (1) the early rifting (E 1-E 2 2); (2) the middle sagging, strike_slipping and compressing (E 3 2-N 2 1); and (3) the late regional subsidence (N 3 1-Q), forming three corresponding major unconformable contacts (T g, T 5 and T 3).更多还原