Integrated provenance analysis of Devonian-Permian deposits from Northern Siberia: implication for continental-scale river development

Abstract:

The study region located in the northern part of Siberia Carton. The Siberian Craton represents the northeastern portion of the Eurasian plate and is bounded on all sides by varying in age fold belts and is the key region for paleogeographic implication restoration of Arctic realm. The sedimentary strata deposited in northeastern Siberia are Mesoproterozoic to Cretaceous in age and overlie metamorphosed Archean-Paleoproterozoic basement with a significant gap. Over 25 U-Pb detrital zircon samples have been dated from the Devonian-Permian clastics across the northern part of Siberia. Out study revealed that Devonian and lowermost Carboniferous clastics have been sourced from the local highs composed of basement uplifts, older Precambrian sedimentary succession and Late Devonian magmatic rocks. The Detrital zircon age distributions in the Serpukhovian -Permian sandstones, with numerous grains close to the sedimentation age point to Late Paleozoic Orogenic Belt as the most likely provenances for clastic rocks of northern Siberia. Thus, the most likely source for Upper Paleozoic clastics of northern Siberia locates within western and southwestern part of Siberia continent (present day coordinates), where coeval Late Paleozoic tectonic and magmatic events have been reported. Our paleogeographic restoration reveals the existence of two major fluvial systems draining eastward across the Siberian Craton during the Carboniferous-Permian the Paleo-Lena in the south and the Paleo-Khatanga in the north.

Interpretation of isotopic data was supported by the Russian Science Foundation grant № 20-17-00169