摘要
非史密斯地层是指那些经历地不同程度变形、变质、变位,现存特征与其沉积时明显不同,甚至面目全非的无序或部分有序的地层——岩石体(区)。非史密斯地层可划分为褶断地层类、韧变地层类和杂岩类。非史密斯地层的研究方法和技术路线可概括为:分类、分区(带)、分块(片)→形成、变位、变形和变质标志分析→区域地层的原生时空结构分析→确定构造地层带→建立岩石、年代地层系统。非史密斯地层学的出现是造山带地质深入研究的产物,是地层学发展过程中新的里程碑。
Non Smith stratigraphy refers to the strata which have undergone remoldings of different degrees in deformation ,metamorphism and displacement.It is of disorder or partial order in the sequence and spatial architecture.There are great differences between existing characteristics and original ones in non Smith stratigraphy.Non Smith stratigraphy can be divided into three categories:fold fault stratum type,ductile deformation stratum type and complex type.Methods and technical procedures of non Smith straigraphic study are division of stratigraphic type,zone and block→analysis of formation,displacement,deformation and metamorphism indicators→analysis of original temporal and spatial architectures of regional stratigraphy→determination of tectonic stratigraphic zones→establishment of lithostratigraphic and chronostratigraphic systems.The non Smith stratigraphic concept arose from deep study of orogenic zone and is a milestone in stratigraphy.The essence of non Smith stratigraphic concept is tectonic transportation and melange,which deeply affect the temporal and spatial architecture of original strata.
出处
《地球科学(中国地质大学学报)》
EI
CAS
CSCD
北大核心
1996年第1期19-26,共8页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金
高等学校博士学科点专项科研基金
关键词
非史密斯地层
造山带
地层学
non Smith stratigraphy,orogenic zone,stratigraphy.