Structural Reconstruction of the Middle Uralian Part of the Uralian Orogen at the Initial Stage of Its Formation: Evidence from Clay Geochemistry

• Published in: Geochemistry international Vol. 59; no. 5; pp. 522 - 527
• Main Authors: Maslov, A. V., Mizens, G. A., Badida, L. V., Krupenin, M. T.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.05.2021; Springer; Springer Nature B.V
• Subjects: Bottom sediments; Carboniferous; Clay; Data points; Drainage; Earth and Environmental Science; Earth Sciences; Geochemistry; Orogeny; Paleozoic; Permian; Rivers; Rock; Rocks; Sedimentary basins; Sedimentation; Sedimentation & deposition; Sediments; Sediments (Geology); Short Communications; clay rocks; Middle–Upper Carboniferous; Uralian Foredeep; Yuryuzan–Sylva depression; distribution of rare-earth elements and Th; Lower Permian
• ISSN: 0016-7029; 1556-1968
• DOI: 10.1134/S0016702921050049

The Uralian foredeep is a classical marginal structure located on the foreland of the Late Paleozoic Uralian Orogen. It is subdivided into several depressions/sedimentation basins. This paper presents the analysis of the REE and Th distribution in the Middle Carboniferous and Lower Permian clay rocks of the Yuryuzan–Sylva Depression. This structure, like other depressions of the foredeep, is made up of diverse associations of the first sedimentation cycle clastic and clay rocks, which were formed during the orogen erosion. In the (La/Yb) N –Eu/Eu* and (La/Yb) N –Th diagrams, individual and average data points are confined to the field of bottom sediments of mouths of modern rivers draining volcanic provinces. This likely suggests a homogeneous composition of orogen provenance in the Carboniferous and Early Permian.