干旱区生态环境知识资源中心(Arid): Paleosols and host rocks from the Middle-Upper Permian reference section of the Kazan Volga region, Russia: A case study

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DOI	10.1016/j.palwor.2019.05.004
	Paleosols and host rocks from the Middle-Upper Permian reference section of the Kazan Volga region, Russia: A case study
	Mouraviev, Fedor A.; Arefiev, Mikhail P.; Silantiev, Vladimir V.; Eskin, Alexey A.; Kropotova, Tatyana V.
通讯作者	Mouraviev, FA
来源期刊	PALAEOWORLD
ISSN	1871-174X
EISSN	1875-5887
出版年	2020
卷号	29 期号:2 页码:405-425
英文摘要	The Urzhumian (Wordian) and Severodvinian (Capitanian) reference section of the Monastery Ravine (Kazan Volga region, Russia), contains two siltstone lithofacies: (a) laminated and (b) massive. Depositional settings of the laminated siltstones can be interpreted as perennial to ephemeral lakes; depositional settings of the massive siltstones are interpreted as floodplains with soil cover and periodical silt influx in wet seasons. The bulk geochemistry of siliciclastics has revealed a high degree of weathering of both types of siltstone. The similar chemical composition, mineralogy, and grain size suggest the same provenance of silt material. Geochemical data indicate eastern source rocks, which are the Permian red beds of the Cis-Ural plains. The main genetic types of paleosols hosted in the massive siltstones in the studied section, include moderately developed Vertisols and Calcisols with drab-colored root traces, calcareous nodules, low chroma mottles, angular blocky peds and slickensides. These pedofeatures indicate in general a semi-arid climate with clear seasonality of rainfall. Major oxides of the paleosol matrix were used to estimate paleoprecipitation through the bases to alumina (EBases/Al) ratio and chemical index of alteration minus potassium (CIA-K) proxies. Estimates from Urzhumian paleosols indicate relatively low mean annual precipitation (MAP) of 390 mm/yr. The transition to the Severodvinian paleosols is marked by a noticeable MAP increase up to 777 mm/yr. This climate moistening coincides with changes in the morphology of paleosols from dolomitic with low redoximorphy to calcitic with gley horizons. The pedogenic carbonate nodules consisting of dolomicrite (5-10 pm) are very common in the Urzhumian paleosols and their morphology, micromorhology and isotopic features indicate the pedogenic origin of dolomite. Sedimentological and paleopedological features of the studied siltstones, as well as the location of the Volga-Ural basin in a mid-latitude position (25-32 degrees N) indicate a monsoonal character of precipitation during the Middle Permian. (C) 2019 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved.
英文关键词	Permian Urzhumian Severodvinian Siltstone Paleosol Dolomite
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000565829800004
WOS关键词	SEDIMENTARY-ROCKS ; WESTERN PANGAEA ; SOUTH URALS ; INDICATORS ; PRECIPITATION ; CLIMATE ; ORIGIN ; LOESS ; BASIN ; PALEOCLIMATE
WOS类目	Paleontology
WOS研究方向	Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326029
作者单位	[Mouraviev, Fedor A.; Arefiev, Mikhail P.; Silantiev, Vladimir V.; Eskin, Alexey A.; Kropotova, Tatyana V.] Kazan Fed Univ, Kremlevskaya St 18, Kazan 420008, Russia; [Arefiev, Mikhail P.] Russian Acad Sci, Geol Inst, Pyzhevsky Lane 7, Moscow 119017, Russia; [Mouraviev, Fedor A.] Kazan Fed Univ, Inst Geol & Petr Technol, Dept Gen Geol & Hydrogeol, Kremlevskaya Str 18, Kazan 420008, Russia; [Arefiev, Mikhail P.] Russian Acad Sci, Geol Inst, Lab Sedimentol & Geochem Sedimentary Basins, Moscow, Russia; [Arefiev, Mikhail P.] Kazan Fed Univ, Res Lab Stratig Oil & Gas Bearing Reservoirs, Pyzhevsky Per 7, Moscow 119017, Russia; [Silantiev, Vladimir V.] Kazan Fed Univ, Inst Geol & Petr Technol, Dept Paleontol & Stratig, Kremlevskaya Str 18, Kazan 420008, Russia; [Eskin, Alexey A.] Kazan Fed Univ, Inst Geol & Petr Technol, Dept Mineral & Lithol, Kremlevskaya Str 18, Kazan 420008, Russia; [Kropotova, Tatyana V.] Kazan Fed Univ, Inst Phys, Dept Relat Theory & Grav, Kremlevskaya Str 18, Kazan 420008, Russia
推荐引用方式 GB/T 7714	Mouraviev, Fedor A.,Arefiev, Mikhail P.,Silantiev, Vladimir V.,et al. Paleosols and host rocks from the Middle-Upper Permian reference section of the Kazan Volga region, Russia: A case study[J],2020,29(2):405-425.
APA	Mouraviev, Fedor A.,Arefiev, Mikhail P.,Silantiev, Vladimir V.,Eskin, Alexey A.,&Kropotova, Tatyana V..(2020).Paleosols and host rocks from the Middle-Upper Permian reference section of the Kazan Volga region, Russia: A case study.PALAEOWORLD,29(2),405-425.
MLA	Mouraviev, Fedor A.,et al."Paleosols and host rocks from the Middle-Upper Permian reference section of the Kazan Volga region, Russia: A case study".PALAEOWORLD 29.2(2020):405-425.