ABSTRACT: A new version of Stratigraphic Code of Russia was published in 2006. The suggested approach to the stratigraphic classification somewhat differs from that of the International Stratigraphic Guide. Stratigraphic categories consist of primary (chronostratigraphic) and auxiliary (according to method applied). Primary units may be of global (stages and others), regional (regional stages, provincial zones), and local (suites) scale. The chronozone is considered to be a part of the stage and belongs to primary units. Debatable problems, particularly different opinions on a role of lithostratigraphy and on the GSSP concept are discussed.
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