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The Petrographic Code of Russia is a body of major rules and recommendations that establish a unified and standardized petrographic
terminology and nomenclature for endogenic and impact rocks and the taxonomy of petrographic units. The single system of terms
and concepts underlying the petrographic code shall be obligatory for all departments and organizations in conducting geological
operations in the territory of Russia. This system shall be applied when state geological maps of various scales and series
legends for them are prepared and when maps are created under international projects. The structure of the second and third
editions of the Code was modified compared with that of the first edition, and this edition includes new appendices. With
regard for new standards and requirement of geological practice, additional sections concerning sedimentary-volcanic, migmatite,
and some other rocks were introduced into the Code. The sections devoted to metamorphic and metasomatic rocks were revised
and amended, and arguments were proposed justifying the recognition (as an individual genetic type) of fluid-explosion rocks,
which can be accompanied by ore mineralization of various types. Most definitions are revised, many entries are reworked and
or abridged, and new entries are added. The revised wording of the Code involves recommendations from the International Commission
on Systematics in Petrology of the International Unit of Geological Sciences. 相似文献
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Stepanov S. Yu. Puchkov V. N. Palamarchuk R. S. Popov V. A. Lepehina E. N. Sharpenok L. N. Antonov A. V. 《Doklady Earth Sciences》2020,493(1):499-503
Doklady Earth Sciences - The results of U–Pb isotope dating of perovskites from silicate–calcite vein rocks spatially associated with the Kusa–Kopan gabbro intrusion are... 相似文献
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L. N. Sharpenok E. A. Kukharenko A. E. Kostin 《Journal of Volcanology and Seismology》2009,3(4):279-293
Results are reported from recent developments relating to volcanic rocks; these were necessary in connection with an analysis
of remarks and proposals for the 1995 Petrographic Code, as well as resulting from an analysis of practical applications of
this document. The new materials are concerned with three directions: (1) further specification of the “total alkali-silica”
diagram (TAS) for acidic rocks and trachytes; (2) improving the classification of clastic volcanogenic rocks and regulating
the volcaniclastic terminology; and (3) substantiating the principles for subdividing sedimentary-and-volcanogenic rocks into
subunits of different hierarchical levels and specifying the associated criteria. The insertion of results of these developments
into a second, revised and supplemented edition of the Petrographic Code and their application to geological studies will
enhance the quality of the latter. 相似文献
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