1.绪言 地层学者在其实践中所使用的各种方法是否正确,并不决定于各委员会常常出于理论上的考虑,而是由他的工作成果,也就是由其地层成果的正确性来决定。因此,地层方法指南对作地层工作的地质学者,只能提供一点帮助和介绍。人们希望,本指南概述将有助于避免形式上的错误,并有助于地层范畴 1. INTRODUCTION The correctness of the methods used by stratigraphic scholars in their practice does not depend on the often theoretical considerations of commissions, but on the results of his work, ie, the correctness of its stratigraphic success Decided. Therefore, the Guide to Stratigraphic Methods can only provide a little help and introduction to geologists who work on strata. It is hoped that an overview of this guide will help to avoid formal mistakes and contribute to stratigraphic categories