Carbon, oxygen, and strontium isotopic fingerprint in Neoproterozoic to early Cambrian limestones in an active margin setting: A record of local environment or global changes?

•Diverse Ediacaran–Cambrian limestones were documented in an accretionary wedge.•Primary limestones were deposited on slopes of seamount volcanoes.•Re-deposited limestones are associated with deep-water turbidity deposits.•Carbon, O and Sr isotope signatures can be linked with paleooceanographic interpretations.•Carbonates of OPS provide insights into the polarity and dynamics of subduction zones.