A Multi-proxy Provenance Study of Late Carboniferous to Middle Jurassic Sandstones in the Eastern Sverdrup Basin and Its Bearing on Arctic Palaeogeographic Reconstructions

A multi-proxy provenance study of Late Carboniferous to Middle Jurassic sandstones from the eastern Sverdrup Basin was undertaken employing optical petrography and heavy mineral analysis, chemical analysis apatite, garnet rutile grains, as well detrital zircon U–Pb geochronology Hf isotope analysis. strata on southern basin margin are inferred being predominantly reworked Silurian Devonian within adjacent Franklinian succession. Higher-grade metamorphic detritus appeared during Triassic times indicates exhumation erosion lower (Neoproterozoic Cambrian) levels succession and/or a direct input Canadian-Greenland Shield. The northern-derived sediments is more enigmatic owing subsequent opening Arctic Ocean. Northern-derived Permian Early were likely derived proximal areas Chukotkan part Alaska-Chukotka microplate. have different age spectra ones Uralian orogenic belt Uralides. loss this sand latest interpreted reflect drainage reorganisation farther upstream Barents Shelf. sands in northern axial parts largely local strata. This may been facilitated by rift flank uplift response rifting proto-Amerasia Basin.