干旱区生态环境知识资源中心(Arid): Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region

Arid

	Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region
	Mouraviev, F. A.; Arefiev, M. P.; Silantiev, V. V.; Gareev, B. I.; Batalin, G. A.; Urazaeva, M. N.; Kropotova, T. V.; Vybornova, I. B.
通讯作者	Mouraviev, FA
来源期刊	UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI
ISSN	2542-064X
EISSN	2500-218X
出版年	2016
卷号	158 期号:4 页码:548-568
英文摘要	In this work we focus on sedimentology, mineralogy, grain size, and geochemistry of red mudstones of the Urzhumian (Wordian) and Severodvinian (Capitinian) reference section of the Monastyrskii ravine to specify their depositional settings and paleoclimatic conditions. In the section, two types of mudstones have been identified based on their structure: a) massive and b) laminated. The former ones do not contain faunal and plant remains and are often altered by pedogenic processes, the latter ones may have ostracod and bivalve shells or fish scales and sometimes bear the sings of short-term shallowing and drying. The bulk geochemical analysis of siliciclastics has revealed a high degree of weathering (chemical index of alternation, CIA similar to 72-79) of both types of mudstones, as well as their source rocks (Permian red beds of the Cis-Ural plains). Massive mudstones have non-erosional contacts, they are confined to the regressive stages of sedimentary cycles, and their composition is dominated by fine and medium silt with angular grains. In the geochemical profile of paleosols developed on massive mudstones, under almost constant CIA values, there have been found levels with the high Ti/Zr ratio, which corresponds to the bimodal distribution of grain size. This could be an evidence of an input of clastic material during the pedogenesis process, and the surface morphology of quartz grains indicates their aeolian origin. The study of the paleosol profiles widely represented in the section has allowed reconstruction of the semi-arid climate with distinct rainfall seasonality. The clastic material has been transferred into the Urzhumian sedimentary basin from the Cis-Ural plains by the fluvial way under the semi-arid climate conditions, thereby leading to the formation of laminated mudstones in shallow lakes with periodical drying and on floodplains. An increase of the aeolian silt transport occurred in dry seasons during the stages of lake regressions, when the fluvial plains prograded basinwards simultaneously with the formation of soil cover.
英文关键词	Permian Urzhumian stage Severodvinian stage mudstones paleosols aeolian silt sedimentary cycles
类型	Article
语种	Russian
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000395300700005
WOS关键词	PALEOSOLS ; LOESS ; MIDCONTINENT ; OKLAHOMA ; DEPOSITS ; PANGAEA ; ORIGIN
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331797
作者单位	[Mouraviev, F. A.; Arefiev, M. P.; Silantiev, V. V.; Gareev, B. I.; Batalin, G. A.; Urazaeva, M. N.; Kropotova, T. V.; Vybornova, I. B.] Kazan Fed Univ, Kazan 420008, Russia; [Arefiev, M. P.] Russian Acad Sci, Geol Inst, Moscow 119017, Russia; [Arefiev, M. P.] Nat Hist Museum, Novoalekseevka 152049, Yaroslavl Regio, Russia
推荐引用方式 GB/T 7714	Mouraviev, F. A.,Arefiev, M. P.,Silantiev, V. V.,et al. Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region[J],2016,158(4):548-568.
APA	Mouraviev, F. A..,Arefiev, M. P..,Silantiev, V. V..,Gareev, B. I..,Batalin, G. A..,...&Vybornova, I. B..(2016).Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region.UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI,158(4),548-568.
MLA	Mouraviev, F. A.,et al."Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region".UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA ESTESTVENNYE NAUKI 158.4(2016):548-568.