from 01.01.2021 until now
Vidnoe, Moscow, Russian Federation
Moscow, Russian Federation
employee
employee
Institut geohimii i analiticheskoy himii imeni V.I. Vernadskogo RAN
Geologicheskiy institut RAN
UDK 551.83 Палеогеография палеозоя
UDK 550.422 Распространенность отдельных химических элементов на Земле (земная кора, ядро Земли и т. д.)
UDK 550.428 Парагенетические ассоциации химических элементов
UDK 550.462 Геохимическое действие атмосферы
UDK 55 Геология. Геологические и геофизические науки
UDK 550.34 Сейсмология
UDK 550.383 Главное магнитное поле Земли
GRNTI 37.01 Общие вопросы геофизики
GRNTI 37.15 Геомагнетизм и высокие слои атмосферы
GRNTI 37.25 Океанология
GRNTI 37.31 Физика Земли
GRNTI 38.01 Общие вопросы геологии
GRNTI 36.00 ГЕОДЕЗИЯ. КАРТОГРАФИЯ
GRNTI 37.00 ГЕОФИЗИКА
GRNTI 38.00 ГЕОЛОГИЯ
GRNTI 39.00 ГЕОГРАФИЯ
GRNTI 52.00 ГОРНОЕ ДЕЛО
OKSO 05.00.00 Науки о Земле
BBK 26 Науки о Земле
TBK 63 Науки о Земле. Экология
BISAC SCI SCIENCE
Using the Silimkun Formation of Udokan as a case study, various aspects of utilizing recently introduced petrogenetic diagrams (three-dimensional compositional spaces, RW index) alongside well-established indices and ratios (CIA, ln(Al2O3/Na2O), Al2O3/K2O) were tested and examined. The study discusses the standard mineral composition, its variations, the reliability of calculations based on petrographic research data, as well as the challenges associated with employing climate indices and lithochemical diagrams to reconstruct past climatic changes. The research determined that the sandstones of the Silimkun Formation are predominantly petrogenic (first cycle) and were formed under conditions characterized by the prevalence of physical weathering. This conclusion is supported by both mineralogical indicators and low values of weathering indices. Additionally, it was found that among all the proxies used, the RW and ln(Al2O3/Na2O) indices are the least affected by compositional changes and the formation of authigenic minerals.
Ediacaran, Cambrian, Udokan region, climate, chemical weathering proxies
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