NON SMITH STRATA IN THE OROGEN AND THEIR GEOLOGICAL MAPPING

Proceeding from the concept of non Smith strata,the authors discuss three basic types of non Smith strata and give their examples.The three basic types are the paleosuture type （mélange） type,nappe type,and strike slip type and other composite type.The authors also discuss the research contents and methods of non Smith strata and some problems in their geological mapping.