松辽盆地北部地层学与沉积学研究进展

RESEARCH PROGRESSES OF THE STRATIGRAPHY AND SEDIMENTOLOGY FOR NORTH SONGLIAO BASIN

松辽盆地北部地层学研究始于20世纪20年代,首先进行的是岩性及生物地层学研究;20世纪90年代到21世纪前5年为地震地层学及经典层序地层学研究阶段;为了适应岩性油气藏勘探需要,2005年、2006年分别开展了高分辨率层序地层学研究和米兰科维奇旋回地层学研究。随着地层学研究的发展,沉积学研究从20世纪60年代至今先后经历了盆地级沉积相带研究、创立大型陆相湖盆三角洲沉积体系理论、沉积动力学研究、地质规律再认识和地震沉积学研究5个阶段。所建立的层序地层学与沉积学理论体系为陆相石油地质学理论的发展作出了贡献。

The researches of the lithology and biostratigraphy for North Songliao Basin were started in the 1920s;and from 1990s to 2005,the study stages of the seismic stratigraphy and classic sequence stratigraphy were caught out.In order to meet the requirements of the lithologic oil-gas reservoir exploration,the research on the high-resolution sequence stratigraphy was put forward in 2005,and in 2006,Milankovitch cycle stratigraphy research started.With the development of the researches on stratigraphy,the explorations of the sedimentology have experienced the following stages：sedimentary facies belt researches in the basin level,the establishment of the sedimentary system theory of the large-scale continental lake basin delta,researches of the sedimentary dynamics,recognition of the geological laws and seismic sedimentology researches,and furthermore the established sequence stratigraphy and sedimentology theory system have made a certain contribution for the development of the continental petroleum geology theories.