摘要
辽东半岛南部盖层在中生代的构造运动中经历了6次以上的构造变形。D1变形发生于中三叠世，是伴随盖层相对基底作自东向西大规模剪切滑脱而出现的以顺层面理、层流褶皱为代表的固态流变构造；紧随其后的是东西向挤压下形成的南北向复式褶皱；接着由南北向挤压形成东西向褶皱断裂系；自晚侏罗世晚期的D4变形开始出现了北东、北北东向以脆性断裂为主的构造格局。地幔隆起、基底较大幅度沉降决定的相对不稳定性，以及相邻构造块体之间的相互作用是造成本区盖层褶皱较其它地区地台盖层褶皱更加强烈和复杂的主要原因。
ThecoverinthesouthofLiaodongpeninsulahadexperiencedatleast6timesofdeformationduringthetectonicmovementinMesozoic.D1deformationoccurredatMid-Triassic,whichwasagroupofsolidflowstructure,representedbybeddingfoliationandstratifiedflowfoldassociatedwiththemassiveEW-trendingbeddingshearglideofthecoveroverthebasement;D2deformationoccurredatLateTriassic,andeventoEarlyJurassic,whichwasaSN-trendingmultiplefolds(faults)system;D3deformationoccurredatMid-JurassictothemiddlestageofLateJurassic,whichwasEW-andNW-trendingfolds(faults)system;D4deformationoccurredatlatestageofLateJurassic,whichwasaNE-trendingfolds－thrustnappesystem;D5deformationoccurredfromtheendstageLateJurassictoEarlyCretaceous,whichwasNE-NNEcompressionalandcompresso-shearfaultssystem;D6deformationoccurredatLateJurassic,whichwasblockstructuresboundedbynormalorstrike-slipfaultsofmainlyNE-andNNE-trending.
关键词
辽东半岛
南部
盖层褶皱
构造样式
Liaodongpeninsula
south
coverfold
structuralpattern
thrustnappestructure
crust-mantletexture
