Constraining late paleozoic ice extent in the Paganzo basin of western Argentina: Provenance of the lower Paganzo group strata

The western margin of Gondwana records evidence mid-Carboniferous glaciation (Visean- Bashkirian) in the strata Paganzo Basin and adjacent areas. Previous studies focused on constraining orientations ice flow generalizing extent occurrence glacial basin. However, there is uncertainty occurs concerning location locations centers during deposition Guandacol Formation located portion time correlative Malanzán eastern parts basin respectively. Understanding these conditions that led to has important implications for understanding along late Paleozoic age. To refine history, we present new paleocurrent, facies, a comparative analysis previously published one detrital zircon geochronology data set. Together, provide insight into sediment dispersal patterns within Our indicate both units were deposited under cold climatic occurred across entire basin, but glaciers restricted facies formations indicates very different depositional environments two units: glaciomarine west non-glacial alluvial, alluvial fan lacustrine and/or marine east. Detrital separate localized provenance signatures formations. Furthermore, populations allude disconnected centers. At Huaco, oriented toward northwest (i.e. 313°) appears be draining from an uplift contains similar age as Sierra de Valle Fértil Pie Palo ranges. In Olta-Malanzán paleovalley system, drainage was off valley walls down axis south southwest) Sierras Chepes region with limited sourced east just beyond system. Paleoflow measurements reported other known localities reflect radial pattern away deeply incised valleys clearly point upland Cuyania Precordilleran terranes.