To the problem of stage subdivision of the Lower Cambrian |
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| Authors: | A Yu Rozanov V V Khomentovsky Yu Ya Shabanov G A Karlova A I Varlamov V A Luchinina T V Pegel’ Yu E Demidenko P Yu Parkhaev I V Korovnikov N A Skorlotova |
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| Institution: | (1) Paleontological Institute, Russian Academy of Sciences, Moscow, Russia;(2) Institute of Oil-and-Gas Geology and Geophysics, Siberian Branch, RAS, Novosibirsk, Russia;(3) FGUP Siberian Research Institute of Geology, Geophysics and Minerals, Novosibirsk, Russia;(4) RF Ministry of Natural Resources, Moscow, Russia |
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| Abstract: | It was a serious mistake when subdivision stratotypes had been disposed of in practice of constructing the General stratigraphic scale, because they cannot be substituted by the boundary stratotypes. A subdivision stratotype and respective GSSP are complementary parts characterizing any stratigraphic unit. The best candidates for stage stratotypes of the Lower Cambrian are certainly sections of the Lena-Aldan region in the Siberian platform, which have been studied in detail during many years, are well exposed, and contain abundant and diverse fossils, being insignificantly disturbed by tectonic dislocations. Nomenclature, stage and boundary stratotypes of the Siberian standard can be successfully used therefore for stratigraphic subdivision of the Lower Cambrian. |
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| Keywords: | Lower Cambrian stage subdivision stratotypes Siberian platform |
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