关键词: 事件沉积, 风暴岩, 浊积岩, 松辽盆地, 葡萄花油层, 沉积特征

Abstract: The deep-water low-density Tempestite and Turbidite sediments were found in Putaohua Formation in the north of Songliao Basin.According to lithology facies and sedimentary structure,the tempestite was divided into six sections from bottom to top,including liquefied mudstone section,mudstone with conglomerate section,mudstone conglomerate section,compact conglomerate section,lacustrine mudstone section and turbidity section.The responding generation of the tempestite includes six steps of liquefied,chaos floating,flow erosion,pull flow,equability and slump.The turbidite was resulted from six cycles,and each of them includes A and B members of imperfect Boma succession.The final cycle includes four members of A,B,C and E.The tempestite and turbidite were formed in the lowerstand system tract of slope break region.They have similar genetic background and inherent relationship.The turbidite with lower density generated in deep water was resulted from storm action.

Key words: accidence sedimentary, tempestite, turbidite, Songliao Basin, Putaohua Formation, sedimentary features