Composition of sedimentary rocks from the Burun-Tas Formation, Bol'shoi Lyakhov Island (New Siberian Islands) ...

• Main Authors: Kyz'michev, A B, Soloviev, A V, Gonikberg, V E, Shapiro, M N, Zamzhitskii, O V
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2006
• Subjects: Archive of Ocean Data ARCOD; New Siberian Islands
• Online Access: https://dx.doi.org/10.1594/pangaea.745201; https://doi.pangaea.de/10.1594/PANGAEA.745201

Graywackes and shales of the Bol'shoi Lyakhov Island originally attributed to Mesozoic were subsequently considered based on microfossils as Late Proterozoic in age. At present, these sediments in the greater part of the island are dated back to Permian based on palynological assemblages. In the examined area of the island, this siliciclastic complex is intensely deformed and tectonically juxtaposed with blocks of oceanic and island-arc rocks exhumed along the South Anyui suture. The complex is largely composed of turbidites with members displaying hummocky cross-stratification. Studied mineral and geochemical charac¬teristics of the rocks defined three provenances of clastic material: volcanic island arc, sedimentary cover and/or basement of an ancient platform, and exotic blocks of oceanic and island-arc rocks such as serpentinites and amphibolites. All rock associations represent elements of an orogenic structure that originated by collision of the New Siberian continental block with the Anyui-Svyatoi Nos ... : Supplement to: Kyz'michev, A B; Soloviev, A V; Gonikberg, V E; Shapiro, M N; Zamzhitskii, O V (2006): Mesozoic syncollision siliciclastic sediments of the Bol'shoi Lyakhov Island (New Siberian Islands). Stratigraphy and Geological Correlation, 14(1), 30-48 ...