东准噶尔造山带非史密斯地层类型划分及等级体制建立

NON-SMITH STRATIGRAPHIC DIVISION AND ITS GRADE SYSTEM OF EASTERN JUNGGAR OROGENIC BELT

在研究东准噶尔造带类型及发展历史的基础上建立区域构造格架、组合形式 ,划分出构造 -地层体类、构造 -岩层体类、构造 -混杂体类的非史密斯地层。按照所划分类型的各自特征 ,能够满足造山带 1∶ 2 5万填图精度的要求 ,对全部无序或局部无序的地 (岩 )层建立“岩群、岩组、岩段、岩层”等级体制 ;对那些总体有序、局部无序或总体无序、局部有序的地层 ,能通过各种手段恢复原始层序 ,服从史密斯地层层序律的 ,按“群、组、段、层”

Based on the study of the type of East Junggar Orogenic belt,it sets up the structure,and divides the non smith strata into 3 types,which are tectonic stratigraphy system,tectonic rock,layer system and tectonic melange system.The characteristics of each type can meet the need of the accuracy of 1∶250 000 scale mapping in orogenic belt.A graded system of rock group,rock formation,rock member and rock layer is built up on the strata those are disorderly or locally disorderly.For the disorderly but locally orderly strata or orderly but locally disorder strata,they can be resumed into their original sequemce,a graded system of group,formation ,member and layer can be put forward to the strata which obey the law of non smith sequence.