U–Pb and Hf isotope analysis of detrital zircons from Devonian–Permian strata of Kotel’ny Island (New Siberian Islands, Russian Eastern Arctic): Insights into the Middle–Late Paleozoic evolution of the Arctic

Abstract

Lu-Hf isotope analyses of detrital zircons collected from the Devonian-Permian strata of Kotel'ny Island (New Siberian Islands, Eastern Russian Arctic) provide vital information about provenance areas and history of the poorly studied Paleozoic basement of the Laptev and East Siberian shelves. Based on detrital zircon signatures, our study reveals that the studied succession can be divided into two distinct groups: Devonian-Lower Carboniferous and uppermost Carboniferous-Permian. U-Pb and Lu-Hf isotope signatures of detrital zircons from the Devonian-Lower Carboniferous deposits correspond to well-known Precambrian-Early Paleozoic magmatic and metamorphic events within the northern part of Baltica, indicative of a peri-Baltican affinity of the New Siberian Islands during this time. A lack of zircon ages close to the depositional age of the formation, along with a mature composition of the sandstones, suggest that the Devonian-Lower Carboniferous succession formed as a result of extensive sediment reworking from a distal provenance. By contrast, uppermost Carboniferous-Permian sandstones have an immature composition, with numerous young detrital zircons close to the age of sedimentation and Hf signatures typical of a continental arc environment. We therefore suggest that the provenance for these younger deposits was located within a coeval orogeny and based on previous studies, we conclude that these deposits were sourced from the northwestern part of the Uralian Orogen.

Provenance Analysis of the Andrée Land Basin and Implications for the Paleogeography of Svalbard in the Devonian

“…960 Ma age peak of Svalbard. The abundance of Timanian ages and presence of Caledonian ages from samples of Middle Devonian strata within the New Siberian Islands (Ershova et al., 2018) indicates that although this region is dominated by sources within the Timanian orogen, the New Siberian Islands are being supplied with sediment sources ultimately within the Caledonian orogen. Middle Devonian strata of the Andrée Land Basin in Svalbard are interpreted as being primarily derived locally from the uplift of the Northeastern Basement Province east of the Billefjorden Fault Zone, especially the Ny Friesland block.…”

“…Detrital zircon ages were compiled from the following locations: (a) Early Devonian (Figure 7): Svalbard (this study; Beranek et al., 2020; Pettersson et al., 2010), Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012), New Siberian Islands (Ershova et al., 2018), Severnaya Zemlya (Lorenz et al., 2008), Alexander terrane (Beranek et al., 2013; Tochilin et al., 2014; White et al., 2016). ; (b) Middle Devonian (Figure 8): Svalbard (this study; Beranek et al., 2020), Western Norway (Templeton, 2015, p. 3 representative samples out of 15), East Greenland (Slama et al., 2011), Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012; Anfinson, Leier, Gaschnig, et al., 2012), and the New Siberian Islands (Ershova et al., 2018).…”

“…Detrital zircon ages were compiled from the following locations: (a) Early Devonian (Figure 7): Svalbard (this study; Beranek et al., 2020; Pettersson et al., 2010), Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012), New Siberian Islands (Ershova et al., 2018), Severnaya Zemlya (Lorenz et al., 2008), Alexander terrane (Beranek et al., 2013; Tochilin et al., 2014; White et al., 2016). ; (b) Middle Devonian (Figure 8): Svalbard (this study; Beranek et al., 2020), Western Norway (Templeton, 2015, p. 3 representative samples out of 15), East Greenland (Slama et al., 2011), Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012; Anfinson, Leier, Gaschnig, et al., 2012), and the New Siberian Islands (Ershova et al., 2018). (c) Late Devonian (Figure 9): Svalbard (this study), East Greenland (Templeton, 2015), Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012; Anfinson, Leier, Gaschnig, et al., 2012), Northwest Canada (Beranek et al., 2010; Lemieux et al., 2011), New Siberian Islands (Ershova et al., 2015a, 2015b; Ershova et al., 2018), Seward Peninsula (Amato et al., 2009), Northeast Siberia (Ershova et al., 2020), Northern Baltica (Miller et al., 2011), Novaya Zemlya (Lorenz et al., 2013).…”

“…Age ranges for KDE and pie diagrams listed in Figure 4. Detrital zircon data sources: Svalbard (This study, Beranek et al, 2020), Western Norway (Templeton, 2015, p. 3 representative samples out of 15), East Greenland (Slama et al, 2011), Canadian Arctic Islands Anfinson, Leier, Gaschnig, et al, 2012), and the New Siberian Islands (Ershova et al, 2018).…”

“… (a) Tectonic map of the modern Arctic depicting the general location of the Timanian, Caledonian, Ellesmerian orogenic belts, localities mentioned in the text, and existing Devonian detrital zircon data (map adapted from Colpron and Nelson [2009]). Detrital zircon data by location (East to West from Prime Meridian): EG, East Greenland (Slama et al., 2011); CA, Canadian Arctic Islands (Anfinson, Leier, Embry, & Dewing, 2012; Anfinson, Leier, Gaschnig, et al., 2012), NC, Northwest Canada (Beranek et al., 2010; Lemieux et al., 2011); AT, Alexander terrane (Beranek et al., 2013; Tochilin et al., 2014; White et al., 2016); SP, Seward Peninsula (Amato et al., 2009); NI, New Siberian Islands (Ershova et al., 2015a, 2015b; Ershova et al., 2018); NS, Northeast Siberia (Ershova et al., 2020); SZ, Severnaya Zemlya (Lorenz et al., 2008); NZ, Novaya Zemlya (Lorenz et al., 2013); NB, Northern Baltica (Miller et al., 2011); Sv, Svalbard (This study; Beranek et al., 2020; Pettersson et al., 2010); WN, Western Norway (Templeton, 2015). Geographic references: PE, Pearya terrane; LR, Lomonosov Ridge; CB, Chukchi Borderland; and FJL, Franz Joseph Land.…”