{"title":"Chemical Composition of Vendian Mudrocks (Middle Urals) and Some Quantitative Features of Paleoclimate","authors":"O. Yu. Melnichuk, A. V. Maslov","doi":"10.1134/S0024490225700063","DOIUrl":null,"url":null,"abstract":"<p>Lithogeochemical features of the Vendian nonglacial mudrocks (Serebryanka and Sylvitsa groups) in the Middle Urals indicate that average annual temperatures in paleocatchment areas during their accumulation varied from 4 to 21°C. Such temperatures comply mainly to the temperate and temperate-warm, but less often warm climates. The calculated RW index values also suggest that paleoclimate in the Vendian catchment areas was generally temperate. At the same time, some mudrock samples of the Garevka, Kernos, and Perevalok formations, as well as the Kobylii Ostrov Member of the Chernyi Kamen Formation, have RW index values comparable to those of modern continental or subarctic climate. Variations in RW index values and reconstructed MAP values demonstrate similar cooling/warming trends for mud rocks of Vendian nonglacial intervals in the Middle Urals.</p>","PeriodicalId":18150,"journal":{"name":"Lithology and Mineral Resources","volume":"60 3","pages":"267 - 287"},"PeriodicalIF":0.9000,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lithology and Mineral Resources","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S0024490225700063","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Lithogeochemical features of the Vendian nonglacial mudrocks (Serebryanka and Sylvitsa groups) in the Middle Urals indicate that average annual temperatures in paleocatchment areas during their accumulation varied from 4 to 21°C. Such temperatures comply mainly to the temperate and temperate-warm, but less often warm climates. The calculated RW index values also suggest that paleoclimate in the Vendian catchment areas was generally temperate. At the same time, some mudrock samples of the Garevka, Kernos, and Perevalok formations, as well as the Kobylii Ostrov Member of the Chernyi Kamen Formation, have RW index values comparable to those of modern continental or subarctic climate. Variations in RW index values and reconstructed MAP values demonstrate similar cooling/warming trends for mud rocks of Vendian nonglacial intervals in the Middle Urals.
期刊介绍：
Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.
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