Synorogenic clay rocks: Specifics of bulk composition and paleotectonics

Маслов, А. В.; Мизенс, Г. А.; Подковыров, В. Н.; Nozhkin, A. D.; Sokur, T. M.; Малиновский, А. И.; Сорокин, А. А.; Smirnova, Yu. N.; Gareev, E. Z.; Дмитриева, Н. В.; Крупенин, М. Т.; Летникова, Е. Ф.

doi:10.1134/s0016702915060075

Cited by 14 publications

(3 citation statements)

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“…Обобщение данных по другим объектам выполнено в рамках госзадания ИГГ УрО РАН (тема № 1201357932). Эти работы продолжают наши исследования по анализу валового химического состава псаммитов различных геодинамических обстановок, начатые публикациями [Maslov et al, 2013[Maslov et al, , 2015[Maslov et al, , 2016a.…”

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“…Сопоставление указанных дискриминантных палеогеодинамических диаграмм показало, что они позволяют с определенной долей условности разграничить терригенные ассоциации только платформенных, рифтогенных, островодужных обстановок и пассивных окраин [Maslov et al, 2016b]. Фигуративные точки составов пород коллизионных осадочных ассоциаций самостоятельные поля на них не образуют [Maslov et al, 2013[Maslov et al, , 2015.…”

Section: Introductionunclassified

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Syn-Rift Sandstonеs: The Features of Bulk Chemical Compositions, and Positions on Paleogeodynamic Discriminant Diagrams

Маслов¹,

Подковыров²,

Gareev³

et al. 2018

Geodin. tektonofiz.

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From the early 1980s, the data on the bulk chemical composition of sandstones and mudstones are actively involved for interpretation of the paleogeodynamic settings for sedimentary sequences. Discriminant diagrams such as K2O/Na2O-SiO2/Al2O3 [Maynard et al., 1982], (Fe2O3*+MgO)-K2O/Na2O and others [Bhatia, 1983], SiO2-K2O/Na2O [Roser, Korsch, 1986], (K2O+Na2O)-SiO2/20-(TiO2+Fe2O3+MgO) [Kroonenberg, 1994] etc., are now widely used in regional investigations to classify terrigenous rocks from several paleogeodynamic settings (passive and active continental margins, oceanic and continental volcanic arcs etc.) with a certain 'percentage of consistency'. The first diagrams DF1-DF2 for syn-rift compositions were published in the early 2010s [Verma, Armstrong-Altrin, 2013]. This article analyzes the bulk chemical compositions of syn-rift sandstones from intracratonic rifts and rifts formed during the break-up of the Columbia and Gondwana supercontinents, rifts within volcanic arcs and related to the collapse of collision orogens (for example, Permian sandstones of the Malužiná formation, Western Carpathians, Slovakia). Our database includes the Neoproterozoic Uinta Mountain Group (USA), the Cretaceous Omdurman formation of the Khartoum Basin (Sudan), the siliciclastic deposits of the Kalahari Basin (East African rift zone), the sandstones of the Vindhyan Supergroup (India), the Neoproterozoic Ui Group of the Uchur-Maya region (Southeast Siberia), the Meso-Neoproterozoic Banxi Group (Southern China), the Mesoproterozoic Belt-Purcell Supergroup (USA), the Oronto and Bayfield Groups of the Midcontinent (USA), as well as the sandstones of the Upper Precambrian Ai and Mashak formations, and the metasedimentary rocks of the Arsha Group (Southern Urals). The article examines: (1) the position of the syn-rift sandstone compositions (fields) on the log(SiO2/Al2O3)-log(Na2O/K2O) classification diagram and the F1-F2 diagram, which gives the possible composition of the catchment areas rocks; (2) the position of the syn-rift sandstone compositions, as well as the average values of various indicator ratios and discriminant functions, in the K2O/Na2O-SiO2/Al2O3, F3-F4, SiO2-K2O/Na2O and DF1-DF2 diagrams. The analysis of the results shows that the fields of the syn-rift sandstones are characterized by a wide dispersion of log(SiO2/Al2O3) (0.4…3.5) and log(Na2O/K2O) values (~0.2…6.0 and more). A number of the values do not fit into the typical areas on the classification diagram of F.J. Pettijohn et al., which suggests that the syn-rift sandstones vary considerably in composition that is controlled by a significant number of factors. The diagram of J. Maynard et al. is not suitable for assigning certain sandstone associations to the 'syn-rift sandstones' category. In the diagrams of M. Bhatia and K. Crook, as well as those of B. Roser and R. Korsch, the fields and mean points of the syn-rift sandstones are mainly located in the area of passive continental margins; thus, these diagrams can not be used to classify the syn-rift sandstone a...

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Section: благодарностиunclassified

Section: Introductionunclassified

Syn-Rift Sandstonеs: The Features of Bulk Chemical Compositions, and Positions on Paleogeodynamic Discriminant Diagrams

Маслов¹,

Подковыров²,

Gareev³

et al. 2018

Geodin. tektonofiz.

Self Cite

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“…used to determine provenance, evaluate paleoclimates and tectonic activity, and study the evolution of the crust, e.g. [1]- [13]. The study of mudrocks is important for understanding a large portion of the earth's sedimentary rocks, because they are 65 percent of all sedimentary rocks [14].…”

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Mineralogy and Geochemistry of the Upper Paleocene Shales from Goouydaraq-Goouradaraq, East Azarbaijan, NW Iran

Hajalilou¹,

Ashrafi²,

Sharifi³

2016

OJG

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In NW Iran, the bluish grey pencil shale intercalated with thin detritic limestone and siltstone was deposited on the grey limestone of Paleocene. Based on the X-ray diffraction results, the shale forming minerals are composed of calcite, quartz, feldspar, dolomite, muscovite, hematite and clay minerals including chlorite, illite, montmorionite, kaolinite and palygorskite. The comparison of major and trace element content of the shale with the typical samples indicates abundance in CaO, Sr, and Cs and scarcity in SiO 2 , Al 2 O 3 , and Ba. The values of weathering indices imply moderate weathering in the source area and deposition of sediments in an area with relatively high uplift. According to the major and trace elements ratios, provenance of the shale was probably felsic and/or intermediate igneous rock. The elemental ratios and geochemical parameters values such as Ti/Zr = 38, Th/Sc = 0.55, La/Sc = 1.9, La/Th = 3.4, ΣREE = 117.34, Eu/Eu* = 0.76, and (La/Yb) N = 8.3 suggest a immature continental arc setting for the studied shale. The inferred tectonic setting for the studied shale is in agreement with the tectonic evolutionary history of NW Iran during the Upper Cretaceous-Upper Paleocene. The detailed observation of facies distribution in the NW Iran during Cretaceous-Paleocene shows that the studied shale could be supplied from the volcanic-sedimentary succession of Upper-Cretaceous in a basin related to the Neo-Tethys II subduction.

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Timing of closure of the eastern Mongol–Okhotsk Ocean: Constraints from U–Pb and Hf isotopic data of detrital zircons from metasediments along the Dzhagdy Transect

et al. 2020

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Synorogenic clay rocks: Specifics of bulk composition and paleotectonics

Cited by 14 publications

References 30 publications

Syn-Rift Sandstonеs: The Features of Bulk Chemical Compositions, and Positions on Paleogeodynamic Discriminant Diagrams

Syn-Rift Sandstonеs: The Features of Bulk Chemical Compositions, and Positions on Paleogeodynamic Discriminant Diagrams

Mineralogy and Geochemistry of the Upper Paleocene Shales from Goouydaraq-Goouradaraq, East Azarbaijan, NW Iran

Timing of closure of the eastern Mongol–Okhotsk Ocean: Constraints from U–Pb and Hf isotopic data of detrital zircons from metasediments along the Dzhagdy Transect

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