造山带区调填图非正式岩石地层单位划分及其意义

ON THE DIVISION AND SIGNIFICANCE FOR INFORMAL LITHO—STRATIGRAPHIC UNIT DURING THE MAPPING FOR THE REGIONAL GEOLOGICAL SURVEY IN OROGENIC BELT

本文依现代地层学多重地层划分和现代构造变形等理论为指导,采用1/5万区调填图新方法体系,重点论述了秦岭造山带区调填图中非正式岩石地层单位的划分标准、意义及与其它地层单位的关系、表示方法;认为其同样具有可填图性,是正式岩石地层单位无法兼并或替代的。

According to multiple stratigraphic division of current stratigraphy and to current tec- tonic deformation theory and so on,by use of new method system at scale of 1:50000 on the mapping for regional geologic survey.Put emphasis on the discussion about standard, significance and relationship between stratigraphic unit as well as expression method for informal litho—stratigraphic unit during the mapping for regional geological survey in oro- genic belt.It is considered that informal litho—stratigraphic unit possess mappingability, and that can not take place by the formal litho—stratigraphic unit.